A trail can be used to ride the originally recorded route (from start to end) or a return route (from end to start). When selecting a trail, the route includes navigation from your current location to the beginning of the trail.
From the Navigation menu, select Where To > More > Trails.
Select the trail from the list.
Select:
Take original route (start to end): Select Route to End.
Take return route (end to start): Select Route to Start.