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Half Marathon Badge

  • October 26, 2025
  • 1 reply
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I completed the Niagara Falls Half Marathon today but Strava logged it as 21.08km which is extremely depressing. “Correcting” the distance doesn’t fix the 20m discrepancy. Is there anything I can do to fix this. I would hate to not get the Half Marathon PB on Strava due to this…. 

Best answer by Jan_Mantau

That’s a common occurrence, outside of manipulating activity files you can’t do anything about that. For future activities it can pay off to stop the activity a good bit after the finish. In case the phone’s GPS was the culprit due to missing signals it can also be an idea to record with a modern watch with a better reception. But that’s difficult to determine remotely, there is also the chance that the phone was correct and the distance wasn’t quite a half marathon due to organizational mistakes or using too many shortcuts.

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Jan_Mantau
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  • Superuser
  • 1781 replies
  • Answer
  • October 26, 2025

That’s a common occurrence, outside of manipulating activity files you can’t do anything about that. For future activities it can pay off to stop the activity a good bit after the finish. In case the phone’s GPS was the culprit due to missing signals it can also be an idea to record with a modern watch with a better reception. But that’s difficult to determine remotely, there is also the chance that the phone was correct and the distance wasn’t quite a half marathon due to organizational mistakes or using too many shortcuts.