You can delete a photo you have added by following these steps:
Via desktop or laptop computer:
- Log in to your account on https://www.alltrails.com
- At the top right of any trail details page, hover over your name and in the drop-down select 'Photos'
- Find the photo you would like to delete and click on it to open up the photo viewer
- Click 'Remove Photo' in the bottom right corner of the photo
- Click 'OK' in the pop-up confirmation
- When you refresh the page, the photo will be removed
Via iPhone or Android app:
- Open the AllTrails app
- Tap on 'Profile' on the bottom navigation bar
- Tap on 'Photos'
- Tap on the photo you would like to delete
- Tap on 'Edit photo' in the bottom right corner of the photo
- Tap 'Delete'