Yo this is somewhat of a shameless plug for a (new and quite untested) free garmin datafield I made to help with wayfinding on longer downwinders or new runs where you’ve never seen the exit before.
ive done a 20km and 60km+ run to try it and found it super useful and would love to get some other people to try it and any feedback.
I believe some garmin watches have a waypoint option but mine wasn’t compatible so made a datafield you can add to whatever activity you use to log downwind runs.