Strava activity data may be different than what your Garmin displays because Strava analyzes all data independently once uploaded, regardless of the device used to record the file.
Why is my average speed or pace different on Strava?
Both the total activity distance and the detected moving time are used to calculate your average speed or pace on Strava. First off, compare your stats for total distance and moving time and see below for how both of these metrics may be recalculated on Strava.
Why is my distance different on Strava?
Under normal conditions, differences should be minimal when comparing distance metrics on Strava versus the GPS device, but any small inconsistencies are likely due to number crunching on both ends - Strava processes and analyzes the data in the file independently, whereas most GPS devices tabulate these values on the device itself. There are a few conditions where Strava will display a different distance calculation on your activity page:
- If GPS data is missing from part of your recording, Strava is not able to include the distance. This may happen when the device is unable to connect to the satellites until after the recording is started, or the GPS signal drops during recording.
- If Strava detects bad data in your recording, the distance calculation will be reprocessed automatically based on your GPS coordinates. This includes inaccurate GPS points and data that is clearly inconsistent within the file. This bad data detection is an effort to improve the quality of uploaded data on Strava and does solve many issues with GPS inconsistencies.
- If your file has a large gap in the middle either from manually stopping the recording or a device/GPS malfunction, this may trigger the bad data detection and reprocess the distance based on GPS coordinates. In this case, the distance between any gaps in the file is added to the total.
To request to have your distance reverted to what your GPS device reports, please submit a new support ticket, titled "Revert Distance" and include the relevant activity URLs where you would like the distance to be reverted. Learn more.
Why is my moving time different on Strava?
- For cycling activities with a GPS device or with the Strava app with autopause off: Strava will analyze your movement according to the GPS data to detect if you are moving or standing still. From this analysis, your moving time is calculated, excluding any resting time. This calculation happens independently of any native device calculations for time. However, the total elapsed time should be the same.
- For running activities with a GPS device, moving time is calculated in one of two ways: If the runner does not use the manual stop on their device, Strava will automatically detect moving time and pace when the activity is uploaded. If the runner chooses to manually stop their run activity on their device, we will honor that choice and represent moving time according to the time and pace shown on the GPS device. Learn more.
- For activities with the Strava app with autopause on: The app will automatically pause the timer when your GPS indicates you are stationary. The time you see at the end of the recording should be the time you see listed as your moving time on Strava. Learn more about troubleshooting autopause issues.
Why is my speed incorrect for an indoor ride?
If you leave the GPS signal enabled on your device while recording indoors, Strava will attempt to calculate your activity time, distance and speed from a stationary signal, resulting in very little distance traveled at very low speeds.
If using a speed, cadence or power sensor, try turning the GPS signal off when recording indoors which allows Strava to display the correct stats for speed during your session.
Why is my average segment speed inaccurate?
Strava computes your average speed for a segment based on the Segment's distance, not the distance you actually traveled over the segment match. If you get an inaccurate match or the data used to create the segment is poor, then there can be small differences in the distance of the segment compared to the distance you traveled. To check the math, click through to view the segment page and see the distance listed there compared to the distance listed on your activity page.