Go to your ride log and assign a horse to the ride you want to delete. Save the horse to ride, go back to your ride log and then delete the track.
Then go ahead and post your edited ride track!
Thanks Troy, I got it. Another, unrelated question. The Easytrail app shows steps taken on the main page. Is there a way to change that to miles? I changed the settings from iPhone default to imperial thinking that might do it but it didn’t.