I would like suggest an update, add the option of generate an "Invited link".
I have some friends that have strava but don't follow me yet. It's hard to add new people, and some times people don't kwon how to find a frient. You could "invited link" and if the peopple don't is my friente yet, you could add "you are not following this athlete, please add her", something like this. If peopple don't have strava you could add a mensage to "creat an new account".