Interlaken’s current long route is 47 km, with the next date still pending
The shorter course crosses the Aare and climbs toward Harderkulm; the longer route adds further valley and gorge terrain. Prepare for technical mountain running and substantial climbing rather than using a road-marathon pace prediction. Review the final route because the category name and exact measurement can change between editions.
The event page initially displays the 27K tab, whose start time, ascent, aid count and six-hour limit do not describe the 47K race. Select the intended category before reading the details. A shared event page does not mean every distance has the same cutoff or equipment requirements.
The previous race village was at Obere Bönigstrasse 100 in Matten. Confirm that location and the permitted arrival route in the next guide before choosing parking or walking from a railway station. Allow time for collection, equipment checks and the briefing instead of treating arrival at Interlaken as arrival at the start.
The organizer describes a cupless aid system, so bring the required personal cup or flask and practice using it while moving through support points. Read the complete mandatory-kit table for your category, including any weather-dependent additions communicated near race day. Test footwear, carrying capacity and navigation equipment on comparable ground, and plan effort around climbs and descents rather than a fixed kilometre split. Companions should use approved access points and avoid narrow trail sections. The 2026 route information is useful context, but the current coming-soon message does not confirm a 2027 date, start time or unchanged course. Wait for the new named edition and full category details before making final bookings. Keep this older marathon-directory listing explicit about its longer trail distance so readers do not mistake it for a certified road marathon.
Last-known race profile
These details identify the race page; they do not establish the next edition's operations. The previous race date does not establish the next edition. Wait for the organizer’s announcement before committing to a race-day schedule.