Alpe Adria Trail R4

Alpe Adria Trail R4 is a 20.5 km International Hiking hiking route.

Covering 20.5 km, this demanding trail is best tackled by experienced walkers in good condition. Budget roughly 4 hours and 33 minutes or consider splitting it across two days.

This linear trail moves from one end to the other without looping back. A return journey by transport — or retracing the path — is needed to get back to the start. The trail is officially waymarked as AATR4, so look out for the trail markers along the way.

Part of the International Walking Network (IWN), this route connects to a continent-spanning long-distance trail system. It meets the highest standards of waymarking, surface quality, and route documentation.