LegalEffective 22 September 2026Last updated 3 November 2026

Privacy Policy.

Paceline is a coach that works from your real training data. That only works if you trust us with it. This page says, in plain language, what we collect, what we do with it, who else touches it, and what you can ask us to do. No hype, no hidden clauses.

• 1. Who we are
• 2. What this covers
• 3. What we collect
• 4. How we use it
• 5. AI processing
• 6. Who we share it with
• 7. What other people can see
• 8. Strava and Apple Health rules
• 9. Garmin data
• 10. How long we keep it
• 11. Your rights and choices
• 12. Consumer health data notice
• 13. Security
• 14. Children and teens
• 15. Where your data lives
• 16. Changes to this policy
• 17. Contact

01Who we are

Paceline is made by Paceline Labs Inc., a company registered in the United States, at 527 W 27th St, Apt 5C, New York, NY 10001. We are the data controller for the personal data described here. You can reach us at hello@pacelinelabs.com.

02What this covers

This policy covers everything we run under the Paceline name:

• The Paceline web app and its share pages.
• The Paceline iOS app, including Apple Watch features, and the Paceline Android app.
• Coach conversations over messaging apps (Telegram, WhatsApp and iMessage) once you link them to your account.
• The Paceline connector for AI assistants such as Claude, which lets an assistant you already use read and act on your Paceline data with your permission.
• This website, pacelinelabs.com.

Paceline is currently in beta. Some features described here may be turned on for some athletes and not others.

03What we collect

Account and profile

• Email address and password. Passwords are hashed by our authentication provider; we never see them in plain text.
• Phone number, if you sign up or verify with a phone number, plus the one-time codes we send to it.
• Telegram sign-in. If you sign in with Telegram, we receive your Telegram account ID and the name on your Telegram account.
• Invitations. If you join with an invite code, we record the code and who invited you. We also record the invitations you send.
• Profile details you give us: display name, full name, username, tagline, profile photo, date of birth, gender, height, weight, main sport and time zone. Height, weight, age and gender are used for physiology (training zones, load, recovery), not for anything else.

Training and health data from services you connect

You choose which services to connect. When you do, we receive data from them on an ongoing basis until you disconnect. Depending on the service and what you allow, that includes:

• Activities and workouts: sport, time, distance, GPS route, heart rate, pace, power, cadence, elevation, laps and splits, and the original activity file.
• Daily health summaries: steps, resting heart rate, heart-rate variability, stress and body-battery style metrics, VO2max estimates, breathing rate, blood oxygen and skin temperature.
• Sleep: sleep and wake times, sleep stages, sleep scores.
• Body measurements: weight and similar body metrics your device records.
• Heart-rate and breathing-rate readings through the day from Apple Health, only if you opt in to Sensia readouts (section 5). We keep these readings for 7 days.
• Planned workouts from your calendar or coaching platform, such as TrainingPeaks.
• Menstrual-cycle data, only if a service you connect sends it and you have allowed it there. We do not ask Garmin for it. See section 12.

Garmin, Strava and Apple Health connect to Paceline directly. COROS, TrainingPeaks, Amazfit (Zepp) and others (for example Oura, WHOOP, Polar, Suunto, Wahoo, Zwift) connect through our connection provider Terra. Apple Health data is read directly from the Health app on your iPhone and only with the permissions you grant there. Garmin data has its own section, section 9. We keep the raw data each service sends us so we can reprocess it correctly when we improve our analysis.

Files you upload

You can give the coach files: activity files (FIT, GPX), spreadsheets (CSV), PDFs of training plans or lab results, screenshots and photos, and forwarded emails. We store the file and extract its contents so the coach can use them. PDFs and images are read by an AI model to pull out the text and structure. Upload only what you want the coach to know.

Your conversations with the coach

Everything you say to the coach, and everything it says back, is stored with your account so the coach has continuity and you can scroll back. This includes conversations over Telegram, WhatsApp and iMessage. If you use voice dictation, speech is turned into text by your device or browser (Apple or Google speech services, under their terms); we receive the text.

Voice calls. If you talk to the coach on a live call in the app or on the web, the call runs through our voice provider, ElevenLabs: your voice is streamed to ElevenLabs, which turns your speech into text, generates the coach's replies with an AI model, and speaks them back. We store the call transcript in your coach conversation. See section 5 for what ElevenLabs does with the call.

The coach also keeps a running memory about you: a written summary of your goals, history, injuries, preferences and constraints, built from your data and conversations and updated over time. You can read it, correct it, or ask us to reset it.

Race results

If you ask the coach about a race you ran, it can look up your public result on the organiser's or timing company's site (for example Race Roster, NYRR or Sportstats) using your name. Those sites see the search; we store the result with your account.

Technical data

Like any web service we receive your IP address, browser or device type, and timestamps in our server logs, and we record the tokens used by AI models on your behalf so we can manage cost and quality.

Product analytics. The Paceline apps use Mixpanel to record how Paceline is used: which screens you open and actions such as sending a message to the coach, approving a coach action or starting a call, linked to your account and your name, email address and phone number. Mixpanel never receives your training or health data, your Garmin data, or what you say to the coach. We do not use advertising SDKs or ad tracking, and this website has no analytics. Apart from analytics in the apps, the only cookies and local storage we use keep you signed in and remember your interface preferences. This website loads its typefaces from Google Fonts, which means Google sees your IP address when the page loads.

04How we use it

We use your data for one thing above all: to coach you. Concretely, that means:

• Analysing each completed session against what was planned.
• Tracking training load, fitness, fatigue and recovery over time.
• Building and adapting your training plan, and explaining the reasoning behind every session.
• Sending planned workouts to your Garmin device or Apple Watch when you ask us to, or automatically if you turn that on.
• Answering your questions in chat with your actual numbers.

Beyond coaching, we use data to run the service (accounts, sync, security, debugging), to prevent abuse, and to improve the product. During the beta, our team reviews coach conversations and their underlying data to find and fix mistakes the coach makes. That review is done by Paceline staff only, is limited to what is needed to fix the product, and is never used for marketing. If you would rather your conversations were excluded from this review, tell us and we will exclude them.

We do not use your data for advertising, we do not build profiles of you for anyone else, and we do not sell it. We do not train machine-learning models on your data.

05AI processing

The coach is built on large language models from Anthropic (Claude) and Google (Gemini). To produce a coaching response, we send the relevant parts of your data to one of these providers: your recent activities, plan, profile, the coach's memory of you, the conversation so far, and any file you attached. You can choose which model family the coach uses in your settings.

We use these providers under their commercial API terms: they act only as our processors, do not use your data to train their models, keep what we send them for a limited period for abuse monitoring and then delete it, and may not use it for any purpose of their own. We do not share your data with any AI service for that service's own purposes. Garmin data has stricter rules, set out in section 9. When the coach searches the web to answer you, the search query is run through Anthropic's search tool; the query text, not your training data, is what leaves for the web.

Live voice calls run through our voice provider, ElevenLabs. It turns your speech into text, runs the AI model that generates the coach's spoken replies (from Anthropic or Google, the same as your coach), and speaks them back. During a call it receives what you and the coach say, your name, and a short summary of your recent training and recovery. ElevenLabs acts as our processor: we have set our calls up so that ElevenLabs does not store what is said and does not use call data to train its models. It keeps only a record that the call happened, with its length and cost.

If you opt in to readouts from Sensia, the coach can ask Sensia's AI model for an estimate of your stress, attention and mood, and uses it to shape its advice. For each readout we send Sensia last night's sleep, your heart rate and breathing rate from the hour before, and your age, height, weight and sex. Sensia acts as our processor: it processes the data in memory on Amazon Web Services in Milan, Italy, does not store it and does not use it to train its models. We keep the readout's scores.

The coach can make mistakes. It is a training tool, not a medical device, and nothing it says is medical advice.

06Who we share it with

We share personal data only with companies that process it on our behalf to run Paceline, with services you connect, and with people you choose to share with. We do not sell it and we do not share it with advertisers or data brokers.

Services you connect. When you connect Strava, Garmin or another service, that service shares data with us under your agreement with them, and we may send data back to them where the feature requires it: planned workouts to your Garmin Connect™ calendar, for example. When you connect an AI assistant such as Claude through our connector, that assistant's provider receives the Paceline data the assistant requests on your behalf, under your agreement with them, except your Garmin data, which connected assistants never receive (section 9).

Legal and corporate. We will disclose data if the law requires it, or to protect the rights and safety of athletes or the public. If Paceline Labs is acquired or merges, your data would transfer with the service, and we would tell you before that happens.

07What other people can see

• Your training data is private by default. Your activities, plans, conversations, health data and the details of your profile are visible only to you unless you share them.
• Your profile card. Other Paceline athletes can find you by name or username and open your card: your display name, username, tagline and profile photo. The same card appears as the author on anything you share by link, so anyone viewing a shared item sees it too. Nothing else from your profile is on the card.
• Programs. If you set a program to appear on your profile, other athletes can see it there. If you share a program by link, anyone with the link can see it and follow it. When someone follows your program, you can see who follows it; when you follow someone else's, its owner can see that you do.
• Share links. You can share a workout, plan, scheduled session or completed activity by link. Anyone with the link can see that item, including its title, description, structure, date, distance and duration, together with your display name. A preview card with the same information is generated for messaging apps. You can set an item back to private at any time.
• Profile photo. If you upload one, it is served from a public URL so it can appear on share pages. Anyone who has the URL can view it.
• Workouts you push to Garmin appear in your Garmin Connect account and are governed by Garmin's privacy settings there.

08Strava and Apple Health rules

The services you connect have their own rules about how their data can be shown and used. We follow them, and some of them give you extra protections. Garmin's are in section 9.

• Strava. We ask Strava for access to read your activities and to write to them, so Paceline can post or update an activity on Strava when you ask it to. Strava data is used only to coach you and is displayed with attribution to Strava. It is never sold, never used for advertising, and never shared with other users without your action.
• Apple Health. Health data is read only with the permissions you grant on your iPhone. We never use it for advertising, never sell it, and never disclose it to third parties except the processors above, strictly to provide the coaching you asked for. Disconnecting Apple Health stops new reads; you can also revoke access in the Health app at any time.

09Garmin data

If you connect your Garmin Connect™ account, Garmin sends us data from it directly, under Garmin's developer program. This section explains what we receive, what we do with it, who else handles it, and how to stop it. It adds to the rest of this policy; where the two differ, this section governs your Garmin data.

What we receive

Only the categories you allow on Garmin's permission screen. You can change them at any time in Garmin Connect.

• Activities: each completed activity's summary (sport, time, duration, distance, pace, heart rate, power, cadence, elevation), the samples recorded during it (GPS route, heart rate, speed, cadence, power), the original activity file, and the name of the Garmin device that recorded it. If you edit an activity in Garmin Connect, we may receive the change.
• Daily summaries: steps, resting heart rate, stress, Body Battery and similar daily measures.
• Sleep: sleep and wake times, sleep stages and sleep score.
• Heart rate variability: your overnight HRV.
• Breathing rate: your respiration rate during the day and overnight.
• Depending on the features you use, we may also receive your VO2max and fitness age, body composition (such as weight), blood oxygen (pulse ox) and skin temperature.
• History: if you allow historical data, Garmin sends up to one month of it when you first connect.

We do not request any other Garmin data, including women's health data.

What we send to Garmin

Only if you turn on sending workouts, which asks for your agreement separately. We then add your scheduled workouts to your Garmin Connect™ calendar: each workout's name, steps, targets and date, and we update or remove them when your plan changes. Garmin handles what it receives under Garmin's privacy policy. You can turn this off at any time; workouts already sent stay in Garmin Connect, where you can delete them.

How we use it

Only to provide Paceline to you: to show you your training, labelled with the Garmin device it came from; to analyse your sessions, training load and recovery; to build and adapt your plan; and to answer your questions. We never sell Garmin data or use it for advertising. We never use it to build profiles for anyone else, or combine it into datasets about other athletes. We never use it to train, test, evaluate or benchmark any AI model, ours included.

AI processing

Before you connect Garmin, we show you the statement below, and connecting needs your agreement to it. It is the same statement, word for word:

Paceline's coach is built on AI models from Anthropic (Claude) and Google (Gemini). To coach you, Paceline sends the relevant parts of your Garmin data, such as your activities, sleep, daily summaries and heart rate variability, to one of these providers along with the rest of your coaching context.

Live voice calls with Pace run through ElevenLabs, which turns speech into text and back and runs the call's AI model, from Anthropic or Google, the same as your coach. During a call, ElevenLabs receives a short summary of your recent training and recovery, and the coach's answers to your questions, which can include your Garmin data. ElevenLabs doesn't store what's said on a call. It keeps only a record that the call happened, with its length and cost.

If you opt in to readouts from Sensia, the coach can ask Sensia's AI model for an estimate of your stress, attention and mood. For each readout, Paceline sends Sensia last night's sleep and your heart rate and breathing rate from the hour before, with your age, height, weight and sex. Sensia processes them in memory and doesn't store them.

These providers act only as our processors, under their terms with us. They don't train their models on your data and may not use it for any purpose of their own. Anthropic and Google keep what we send only briefly, for abuse monitoring, before deleting it. Your Garmin data is never used to train, test or evaluate an AI model.

The coach's analysis says when it draws on Garmin device-sourced data. The coach can make mistakes: it is a training tool, not a medical device.

You can withdraw your agreement at any time under Connections in Paceline. That disconnects Garmin and stops the coach using any Garmin data already in Paceline, and you can choose to delete that data too. Disconnecting in Garmin Connect™ also stops Garmin sending us your data.

Who else handles it

Garmin sends your data only to systems that Paceline Labs owns and runs. The complete list of companies that handle it for us:

• Google Cloud (United States) runs the service that receives Garmin's deliveries.
• Supabase, hosted on Amazon Web Services in the United States, stores it, encrypted at rest.
• Vercel hosts the app pages that display it to you.
• Anthropic, Google, ElevenLabs and Sensia process it as described above.

No one else receives your Garmin data from us. That includes Terra and other connection services, Mixpanel, advertisers and data brokers, and AI assistants you connect to Paceline through our connector, such as Claude: Garmin data is held back from those assistants, and they are told when it has been.

Four things happen only because you choose them. If you ask Paceline to post an activity to your Strava account, or to update one there, Strava receives that activity, with its Garmin attribution. If you share an item by link, people with the link see that item, with its Garmin attribution. If you chat with the coach over Telegram, WhatsApp or iMessage, replies that mention your Garmin data are carried by that messaging service. And Paceline staff can access Garmin data only to support you or to fix a problem with the service, and only as much as that needs; your Garmin data is never copied into test data or evaluations. We will disclose data where the law requires it (section 6).

How long we keep it, and deleting it

• While you are connected, we keep your Garmin data, including the original files, so the coach has your history and we can reprocess it as our analysis improves.
• Disconnecting, in Paceline or in Garmin Connect, stops new data. Disconnecting in Paceline also removes Paceline's registration at Garmin and deletes our access to your Garmin account. Data already imported stays unless you delete it: choose deletion when you withdraw your AI agreement, or email hello@pacelinelabs.com.
• Deleting your account deletes all of your Garmin data and removes Paceline's registration at Garmin.
• Backups are retained for a limited period after deletion and then expire.

Security and changes

Garmin data is encrypted in transit and at rest, and your Garmin access tokens are encrypted and held only on our servers. If we learn of a breach affecting your Garmin data, we will tell you and Garmin promptly. We will not change how we handle Garmin data without first updating this section and telling you before the change takes effect.

10How long we keep it

We keep your data for as long as you have an account, because a coach that forgets your history is not much of a coach. Specifically:

• Disconnecting a service stops new data from arriving but keeps what was already imported. If you also want the imported data removed, ask us.
• Deleting your account removes your profile, activities, plans, conversations, memory, uploaded files and connection tokens, and disconnects the services you connected. You can delete your account yourself from your Profile, in the app or on the web. Deletion is immediate and cannot be undone, and anything you shared by link or published as a program goes with it. If you cannot sign in, email hello@pacelinelabs.com from your account address and we will complete deletion within 30 days and confirm.
• Backups and logs are retained for a limited period after deletion and then expire.
• AI providers retain inputs only as long as their API terms allow for abuse monitoring, then delete them.

11Your rights and choices

Wherever you live, you can ask us to:

• Access the data we hold about you, or get a copy in a portable format.
• Correct anything that is wrong, including the coach's memory of you.
• Delete your account and data, or specific data such as everything imported from one service.
• Restrict or object to particular processing, including excluding your conversations from staff review.
• Withdraw consent at any time by disconnecting a service or revoking permissions on your device.

Email hello@pacelinelabs.com and we will act within 30 days. We will verify that the request comes from the account holder. A parent or guardian can make these requests for a teen under 18. If you are in the EU, UK or Switzerland, our legal basis for coaching you is the contract you have with us, and for health data it is your explicit consent, given when you connect a service. You also have the right to complain to your local data-protection authority. If you are in California, you have the rights above under the CCPA, and we do not sell or share personal information as those terms are defined there.

12Consumer health data notice

Some of what we collect is health data under laws such as the Washington My Health My Data Act and Nevada SB 370: heart rate, heart-rate variability, sleep, body measurements, and where a connected service provides it, menstrual-cycle information. This section is our notice under those laws.

• What we collect: the training and health categories listed in section 3, from the services you connect and the files you upload.
• Why: to provide the coaching you asked for. Nothing else.
• Sources: your connected services and devices, and you.
• Who receives it: the processors in section 6, strictly to provide the service. We do not sell consumer health data and we do not share it for advertising.
• Your rights: to access, delete and withdraw consent as in section 11. We will not treat you differently for exercising them.

13Security

Data is encrypted in transit and at rest. Every database query from the app is scoped to your account by row-level security, so one athlete cannot read another's data. Tokens for connected services are stored server-side and never exposed to the browser or the phone. Administrative access is limited to Paceline staff and logged. No system is perfectly secure; if we ever learn of a breach affecting your data we will tell you promptly.

14Children and teens

Paceline is not for children under 13. We do not knowingly collect data from anyone under 13; if you believe a child under 13 has an account, tell us and we will delete it.

Teens aged 13 to 17 can use Paceline. Where the law of your country sets a higher age for agreeing to the use of your data online (in the EU and UK this is between 13 and 16), you need a parent or guardian to agree before you use Paceline or connect a service that sends us health data. We handle teens' data exactly as this policy describes for everyone: for coaching, never for advertising, and never sold. A parent or guardian can ask us to access or delete a teen's data (section 11).

15Where your data lives

Paceline is operated from the United States and your data is stored there. If you use Paceline from outside the US, your data is transferred to and processed in the US. For athletes in the EU, UK and Switzerland we rely on standard contractual clauses with our processors for those transfers.

16Changes to this policy

When we change this policy we will update the date at the top and, for anything material, tell you in the app or by email before it takes effect. Earlier versions are available on request.

17Contact

Questions, requests, complaints: hello@pacelinelabs.com, or by post to Paceline Labs Inc., 527 W 27th St, Apt 5C, New York, NY 10001, United States.