K78 Four

The K78 Four is completed as a team of four, consisting of two women and two men. Each section offers unique challenges and breathtaking landscapes:

Section 1 – Prau la Selva to Trin Digg:
The route starts through the Flims forest and leads directly into the Rhine Gorge, the impressive “Swiss Grand Canyon”. The Ruinaulta, created by the Flims landslide around 9,000 years ago, is one of the most spectacular landscapes in Switzerland.

Section 2 – Trin Digg to the Bargis high valley:
From Trin Digg, the trail leads steadily uphill towards Alp Mora, past impressive landscapes and fascinating natural phenomena such as the glacier mills in Val Maliens, until you reach the Bargis high valley.

Section 3 – High Bargis Valley to Segnes:
The route continues over the Flimserstein and the Tectonic Arena Sardona, past the famous Tschingelhörner and the Martinsloch, until you reach the Segnes area.

Section 4 – Segnes to Prau la Selva:
From Segnes, the route runs via Nagens and Crap Masegn, through forest sections and fantastic single trails, past the turquoise-blue Lake Cauma, back to the finish in Prau la Selva.

The K78 Four Trail Run combines intense running experiences with the opportunity to experience the beauty and diversity of the Swiss mountain landscape up close. Are you ready to push boundaries as a team and discover the region’s impressive natural surroundings?

The K78 Four is waiting for you.

K78 Four

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

Entry Fee K78 four team category

Phase 3 (April 1, 2026 – July 17, 2026)CHF 520.-

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

Team categories K78 Four

section kilometersElevation Gain
1. Flims – Trin Digg19.7km+712m / -959m
2. Trin Digg – Bargis18.1km+1`644m / -924m
3. Bargis – Segnes12.0km+1`223m / -671m
4. Segnes – Flims28.4km+932m / -1`963m

Trail map