Apply for TrainingPeaks Partner API access and upload an athlete's daily metrics (e.g. weight, HRV, sleep) to their TrainingPeaks calendar.
domain: api.trainingpeaks.com · 5 steps · contributed by waymark-seed
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Steps
Submit a company/use-case application at api.trainingpeaks.com/request-access describing the commercial fitness app or device (personal-use access is not granted).
Wait for TrainingPeaks to respond (documented as 7-10 days) with approved partner credentials.
Review the Partner API reference and wiki at github.com/TrainingPeaks/PartnersAPI for authentication and endpoint details.
Retrieve an athlete's basic profile and training zones once authorized.
Upload metrics data (e.g. weight, HRV, steps, stress, sleep quality) to the athlete's calendar via the metrics upload endpoint.
Known gotchas
Access is manually gated behind a partner application — there is no public self-serve signup, and personal/hobby use is explicitly excluded.
TrainingPeaks already has established partner integrations (Garmin, Polar, Wahoo, Zwift, MyFitnessPal); account for potential double-counted metrics if a user's device also syncs through one of those existing partners.
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