I know this is an old thread, but I was just wondering if Garmin ever updated the Varia radars to work with other activities on the Fenix watches. I'm looking at the RVR315 specifically for running on shared city trails and neighborhood roads. That seems a very logical use case for a device like this, but I can't seem to find information on the subject anywhere.
I made this to plug in into ANY activity and works as a data field (even for watches and devices that has no native firmware support for the radar)
Unfortunately, Garmin says NO to this app to be listed in the Garmin App Store.