There are several things that could prevent your activities from counting towards a Challenge. Reviewing the Additional Info section on the Challenge page will give you more information about the individual Challenge (look for the (i) icon on the Strava mobile app.) Some common reasons are:
- For most Strava Challenges, manual entries, indoor activities, and activities marked private will not count towards your Challenge effort.
- There is a certain pace threshold that a run activity has to be under to count towards running Challenges. If your pace exceeded that threshold, please proceed with submitting a support ticket that includes the name of the Challenge in question.
- For most Gran Fondo Challenges, the elapsed time of the qualifying activity must be under 24 hours. If you completed the required distance within the 24-hour time constraint, but the elapsed time of your activity was longer, please proceed with submitting a support ticket that includes a link to the activity and the name of the Challenge in question.
While the Challenge is still active, you can try to reset your Challenge results and regenerate any milestones and badges by leaving then rejoining the Challenge. Read more here.