Is there a way to select certain activities and group them into one to track the metrics of a goal? I couldn’t find anything on it and thought that it might be a fun way to see metrics of a goal.

For instance, I recently completed the New Hampshire 4000 footers via trail running and was wondering if there was a way to group those workouts into one so that I could see the metrics of the achievement itself. Thought it would be a fun way to see how many miles/how much vert you’ve done over the course of an achievement or training cycle.