Hessenweg 4 (Teilstrecke Grünberg - Bad Nauheim)

Marsberg - Edersee - Kellerwald - Marburg - Grünberg - Bad Nauheim - Frankfurt - Darmstadt - Neckarsteinach

This 43.9 km route is a major undertaking — excellent fitness, reliable navigation, and multi-day planning are required. End-to-end time is roughly 9 hours and 45 minutes.

Point-to-point in layout, this trail takes you from A to B across the landscape. Consider your return logistics before heading out. The trail is officially waymarked as H4, so look out for the trail markers along the way.

This route is part of the National Walking Network (NWN) — a flagship trail maintained to national standards, often following scenic or historically significant corridors.