K, OKT 21. (Mátraháza – Sirok)

K, OKT 21. (Mátraháza – Sirok) is a 25.9 km National Hiking hiking trail covering an interesting stretch of countryside.

Covering 25.9 km, this demanding trail is best tackled by experienced walkers in good condition. Budget roughly 5 hours and 45 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. Follow the OKT waymarkers throughout to stay on the official trail line.

As a National Walking Network (NWN) trail, this route represents a nationally recognised hiking corridor. Infrastructure and waymarking are maintained at a high standard.