4x4x48 Challenge (17.-19.4.2026)

4x4x48 Challenge is a mental and physical endurance challenge created by former Navy SEAL David Goggins.

The challenge is simple in structure but demanding in execution.

Run 4 miles (6,5km)

Every 4 hours

For 48 hours

This means we complete 12 runs total, covering 48 miles (about 77km) in two days.

Start 17.4.2026 18.00 End 19.4.2026 18.00

Where 6,5km loop in Adelboden, Bern, Switzerland

Accommodation and meals are provided at Hotel Bristol in Adelboden.

Entry requirements members only.