How to tag skiroller aka rollerski track

This is a track where people exercise nordic skiing but during summer. Is it a special kind of piste:type=nordic? piste:grooming=asphalt?

UPDATE: I also found this roller_ski | Keys | OpenStreetMap Taginfo which has quite some use and combined that with leisure=track. That way overlap with piste:type=nordic no problem and fully true to the ground, from what I can tell.

I don’t know of any tagging scheme for those yet. Here is an example that is also used as a ski piste when snow allows it, so some new tag would be better: