My nearest tile not yet done is about a 85km roundtrip crossing 3 national borders with a maximum elevation f somewhere between 400 and 500m.All the rest involves a roundtrip of over 100km.
Boom--max cluster has now moved to the NORTH
Explorer Helper for Veloviewer.https://play.google.com/store/apps/details?id=ru.anisart.vv
Went out for a walk today which netted a few awkward tiles Max cluster increased by 4.
Doesn't Ivo play this game: https://en.wikipedia.org/wiki/Elfstedentocht(I'm so jealous)
Some well known Dutch tilehunters are already working on icy tiles:https://www.strava.com/activities/4769361608