Fetch time-series streams (GPS, heart rate, power, etc.) for a Strava activity
domain: developers.strava.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Complete OAuth2 with at least activity:read (or activity:read_all for private activities) to get an access token
Call GET https://www.strava.com/api/v3/activities/{id}/streams with a keys param listing desired stream types (e.g. time, distance, latlng, altitude, heartrate, watts, cadence)
Always set key_by_type=true so the response is a keyed object rather than an ordered array
Optionally set resolution (low/medium/high/all) to control how many data points are returned for long activities
Use the time (or distance, if series_type=distance) stream as the shared index across all returned streams, since each stream array aligns positionally
Known gotchas
Omitting key_by_type=true returns an array format that's easy to mis-index against the wrong stream
Not every stream type is available for every activity (e.g. watts only exists if a power meter was used) — requested keys with no data are simply omitted from the response, not returned as nulls
Requesting detailed high-resolution streams across many activities/users can burn through rate limits quickly — request only the stream keys you actually need
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