H23

The H23 trail is ideal for hikers who want to experience unforgettable natural highlights over a manageable distance. Right at the start, you will find the idyllic Lake Cauma—with its crystal-clear water and peaceful atmosphere, it is the perfect place to start the day.

From there, the trail takes you along varied paths through dense forests to the impressive Rhine Gorge. The Ruinaulta, often referred to as the Grand Canyon of Switzerland, offers spectacular views and invites you to stop and marvel at the scenery along the way.

On the way back, you hike through the picturesque Flimserwald forest and via Conn back to the starting point – accompanied by the scent of the trees and the feeling of having recharged your batteries in the midst of nature.

The H23 is the perfect choice for anyone who wants to experience pure nature—whether alone, as a couple, or with the whole family.

 

 

H23

Date

Saturday, July 18, 2026

Start and finish

10.30 a.m. Flims | 20.00 p.m. Flims

Time limit

9.5hrs

Trail

Prau la Selva - Lake Cauma - Rhine Gorge - Conn - Prau la Selva

Trail length and altitude difference

23.2 km | +/-923m

Highlights of the trail

Flimserwald, Rhine Gorge, Conn

K78

Flims Prau la Selva

K78Four

Flims Prau la Selva

K42

Flims

H23

Flims Prau la Selva

K23

Flims

H12

Flims Prau la Selva

K12

Flims Prau la Selva

Entry fee H23

Phase 1 (until December 31, 2025)CHF 80.- (U18 70.-)
Phase 2 (January 1, 2026 – March 31, 2026)CHF 100.- (U18 90.-)
Phase 3 (April 1, 2026 – July 17, 2026)CHF 120.- (U18 110.-)

The registration fee includes the following services:

  • Bib number
  • Starter mail
  • Starter bag
  • Swiss Runners Ticket
  • Running catering
  • Depot running luggage
  • Ambulance service
  • Timekeeping with passive transponder
  • Start and ranking list with split times (online download only)
  • Diploma (online download only)
  • Gift
  • SMS service
  • Organization fee & VAT

Trail map