Trails will automatically be added to your completed list when you write a trail review.
You can also manually add trails to your completed list by following these steps:
Via desktop or laptop computer:
- Log in to your account on https://www.alltrails.com
- Navigate to any trail details page
- Click on 'More' (bottom left of trail image)
- Click on 'Add to Completed'
Via iPhone or Android app:
- Open the AllTrails app
- Navigate to any trail details screen
- Tap on the overflow menu (three dots) in the upper right corner
- Tap on 'Add to List'
- Check 'Completed' and tap 'Save'