When I hike or trail run I edit the activity under the activity type for that log. However, under the activites section in the app they are not listed. The only activities listed are steps, walking, running, cycling, swimming, etc.
My goal is to be able to view how many miles I have hiked, ran, walked, trail run, etc without having to add up by each month or by adding up via my gear (I also track my shoes via the activity I am doing).