K78

Even on the first few kilometers, the route takes you past the beautiful, famous Lake Cauma, whose turquoise-blue water delights numerous visitors every year. Shortly afterwards, you will be rewarded with breathtaking views of the Rhine Gorge, the “Grand Canyon of Switzerland”. The Ruinaulta is a geological masterpiece that was created by the Flims landslide around 9,000 years ago and is now one of the most spectacular landscapes in Switzerland.

From Ruinaulta, the route leads to Trin, where you tackle the first ascent towards Alp Mora. Alp Mora gives you a unique view of the surrounding peaks and impresses with natural phenomena such as the glacier mills in Val Maliens.

After another climb, you reach the impressive Bargis high valley before the route leads up to Flimserstein. From there, the route continues into the UNESCO World Heritage Site of Sardona, where the Tectonic Arena with the famous Tschingelhörner and Martinsloch awaits you.

From here, you walk through Nagens and on to Crap Masegn, which will delight you with its fantastic views of the surrounding area.

Down to Plaun, from where you can sense how close you are to your destination. Enjoy the last few kilometers through the forest before crossing the finish line after an unforgettable journey through breathtaking natural surroundings.

The K78 Trail Run not only offers you an intense running experience, but also the opportunity to experience the beauty and diversity of the Swiss mountain landscape up close. Are you ready to push the limits of your endurance and discover the region’s impressive nature at the same time?
The K78 trail run is waiting for you.

K78

Date

Saturday, July 18, 2026

Start and finish

5:00 a.m. Flims | Sun 3:00 a.m. Flims

Time limit

22h

Trail

Prau la Selva – Lake Cauma – Rhine Gorge – Trin – Alp Mora – Bargis – Flimserstein – Cassons – Nagens – Crap Masegn – Plaun – Prau la Selva

Trail length and altitude difference

78.2 km| +/- 4'624

Highlights of the trail

Lake Cauma, Cassons, Tschingelhörner, Alp Mora, Rhine Gorge

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 K78

Phase 1 (until December 31, 2025)CHF 140.-
Phase 2 (January 1, 2026 – March 31, 2026)CHF 170.-
Phase 3 (April 1, 2026 – July 17, 2026)CHF 200.-

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