Remove distances and add new ones
Registrations >> Dashboard
If your event distance has changed, or you are adding new distances, and removing others, you will first want to deactivate the distances you need to remove.
To deactivate, click the edit link next to the distance...
Uncheck the box next to the distance...
Then click update.
Add your new distance
Event Setup >> Add Another Distance
You will be redirected to this screen where you can create your new distance: