Get the calendar day by day

GET/v1/athletes/{athlete_id}/daysrequires activities.read

One row per date, carrying everything Stride holds against that date rather than against a workout: the annotations on the athlete's calendar (races, holidays, illness, injury, rest days, notes), that day's wellness readings, the night's sleep, where the date falls in the menstrual cycle, and the sessions on it.

This is the endpoint for questions about context and readiness - why a session went the way it did, what the athlete had on around it, whether they were ill or away - where the activities endpoint shows only the training itself.

The cycle section requires the cycle.read scope and is omitted without it. The sleep section requires sleep.read, and annotations requires calendar.read; sections a token cannot see are left out rather than failing the request.

Path parameters

athlete_idstringrequired
The athlete to act on. `me` is the athlete who authorized this token; any other ID must be an athlete they coach.

Query parameters

startstring
Start of the window, as RFC 3339 or YYYY-MM-DD. May be in the future.
e.g. 2026-08-01
endstring
End of the window, as RFC 3339 or YYYY-MM-DD. May be in the future, to include planned sessions.
e.g. 2026-09-01
datesstring
Comma-separated explicit dates (YYYY-MM-DD) instead of a continuous window, for cherry-picking days that are not adjacent.
includestring
Comma-separated sections to return, to keep the response small. Omit for all of them.
e.g. annotations,activities

Example

bash

curl -X GET "https://api.stride.is/v1/athletes/{athlete_id}/days" \
  -H "Authorization: Bearer $STRIDE_TOKEN"

Response200

Success.

daysobject[]always present
- activitiesobject[]
  - ascent_metersinteger
    Total climbing in metres. A value the athlete entered wins over the recorded one.
  - avg_heart_rateinteger
    Average heart rate in bpm: the plain mean of the recording, sensor dropouts excluded. For a session synced without a file, the average its provider reported.
  - avg_power_wattsinteger
    Average power in watts, where a power meter was recording.
  - descriptionstring
  - distance_metersinteger
    Distance covered in metres. A value the athlete entered wins over the recorded one.
  - duration_secondsinteger
    Total elapsed time in seconds. Present once the session is completed, whether recorded or entered by hand; a value the athlete entered wins over the recorded one.
  - feelinteger
    How the session felt to the athlete, 1 (terrible) to 5 (great).
  - has_workoutboolean
    True when a structured workout, with intervals, is prescribed for the session. A planned session without one is a placeholder that sends no intervals to the athlete's devices.
  - idstringalways present
  - kilojoulesinteger
    Mechanical work done in kilojoules, from a power meter. Absent without one.
  - moving_time_secondsinteger
    Time spent moving in seconds, pauses excluded. Present once the session is completed, whether recorded or entered by hand; a value the athlete entered wins over the recorded one.
  - namestring
  - planned_atstring
    When the session is planned for, in the athlete's local wall-clock time with a Z suffix, on the same terms as started_at. Absent for an unplanned session.
  - planned_avg_power_wattsinteger
    Planned average power in watts: the plain time-weighted mean, not normalised power. For a structured ride it is read from the intervals against the athlete's FTP on the day; otherwise it is what the coach entered, or derived from planned work and duration.
  - planned_distance_metersinteger
    Planned distance in metres.
  - planned_duration_secondsinteger
    Planned duration in seconds.
  - planned_intensitynumber
    Planned intensity as a fraction of threshold, e.g. 0.75.
  - planned_kilojoulesinteger
    Planned mechanical work in kilojoules. For a structured ride it is the sum of every interval's power times its duration; otherwise it is what the coach entered, or derived from planned average power and duration. Always consistent with planned_avg_power_watts x planned_duration_seconds / 1000, to rounding.
  - planned_pace_seconds_per_kmnumber
    Planned pace in seconds per kilometre.
  - planned_training_scoreinteger
    Planned training load for the session.
  - recording_withheldboolean
    True when the session was completed but its recording came from Garmin Connect, which Stride may not share with other apps. The planned fields are present; the recorded ones are absent.
  - rpeinteger
    The athlete's rate of perceived exertion, 1 (easy) to 10 (maximal).
  - sourcestring
    Where the recording came from, e.g. GARMIN, WAHOO, STRIDE. STRIDE means the Stride app recorded it.
  - started_atstring
    When the session started, in the athlete's local wall-clock time with a Z suffix. This is NOT a UTC instant: read the athlete's timezone from the athlete endpoint to interpret it. Absent for a session that has not happened yet.
  - training_scoreinteger
    Training load of the completed session, scored against the athlete's thresholds on the day. Absent for a session that has not happened.
  - typestringalways present
    The sport, e.g. RIDE, RUN, SWIM.
  - weighted_heart_rateinteger
    Heart rate in bpm, weighted towards the harder parts of the session rather than a flat average.
- annotationsobject[]
  - all_daybooleanalways present
  - descriptionstring
  - end_datestringalways present
  - end_timestring
  - event_prioritystring
  - event_typestring
  - idstringalways present
  - sourcestring
  - start_datestringalways present
  - start_timestring
  - titlestringalways present
  - typestringalways present
- cycleobject
  - basal_body_temp_celsiusnumber
  - cervical_mucusstring
  - cycle_lengthinteger
  - day_in_cycleinteger
  - flowstring
  - in_fertile_windowboolean
  - in_periodboolean
  - is_period_startboolean
  - is_predicted_cycleboolean
  - is_pregnantboolean
  - notesstring
  - ovulation_teststring
  - period_lengthinteger
  - period_start_datestring
  - phase_typestring
  - sourcestring
  - symptomsstring[]
- datestringalways present
- metricsobject
- sleepobject[]
  - average_heart_ratenumber
  - average_hrvnumber
  - awake_secondsinteger
  - consistency_percentagenumber
  - datestringalways present
  - deep_sleep_secondsinteger
  - disturbancesinteger
  - efficiency_percentagenumber
  - end_timestring
  - idstringalways present
  - is_napboolean
  - light_sleep_secondsinteger
  - lowest_heart_ratenumber
  - performance_percentagenumber
  - rem_sleep_secondsinteger
  - respiratory_ratenumber
  - sleep_cyclesinteger
  - sourcestring
  - start_timestring
  - total_in_bed_secondsinteger
  - total_sleep_secondsinteger
noticestring
Set when data synced from Garmin Connect was left out: sessions, wellness readings, sleep or cycle records. Read it before concluding the athlete did not train or did not record.

Errors

Every error is an RFC 9457 problem document. Branch on itscode, which is stable;detail is prose and may be reworded.

400The request was malformed: an unparseable date, an unknown enum value, or a parameter combination that cannot be satisfied.
401No access token was supplied, or it is not valid for this API.
402The Stride account the token belongs to has no active subscription or trial.
403The token does not hold the scope this endpoint requires, or may not act on the athlete or team named.
404No such resource, or it is not visible to this token. The two are deliberately indistinguishable.
405The path exists but does not serve this method. The Allow header lists the ones it does.
429A rate limit was exceeded. Retry after the period in the Retry-After header.
500Something failed on Stride's side. The failure is logged with a trace ID.