Eiger Bike Challenge
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MTB marathonTough

Eiger Bike Challenge

Classic Alpine MTB marathon from Grindelwald under the Eiger north face — full route ~88km / ~3,600m of long sustained climbs and technical high-mountain descents, plus shorter options. Climbing endurance + descent skill + altitude. Next date ~2027-08-08 approximate.

Date
8 Aug 2027
Location
Grindelwald, Bernese Oberland, Switzerland
Category
MTB marathon
Difficulty
Tough

One of Switzerland's classic Alpine marathons, ridden in the shadow of the Eiger north face. Mass start from Grindelwald, up into the high pastures below the Mönch and Jungfrau.

The full route is 88km with 3,600m of climbing: a handful of long, sustained ascents linking Grindelwald's alps, topping out above 2,000m. Shorter 55km and 30km options too.

It's a climber's marathon. The day is won or lost pacing the long ascents, then held together on loose, rocky, high-mountain singletrack while your legs are already deep.

Who this suits

Is Eiger Bike Challenge for you?

  • Strong climbers who like a long, sustained grind. The route is decided on a few big ascents, not short punchy kicks, so it rewards riders who can hold power for the whole climb.
  • Confident technical descenders. Loose, rocky, exposed high-mountain singletrack rewards good handling, and the biggest time gaps open on the descents when everyone is tired.
  • Riders who pace with discipline. Go too deep on the first climb and the closing ascents fall apart, so this suits athletes who ration the effort early.
  • Anyone chasing an iconic Alpine day. Racing under the Eiger north face is the draw, not a fast, flat time.
Training plan

Training plan for Eiger Bike Challenge

A training plan for Eiger Bike Challenge isn't a generic base build. Beina reads the event's exact demands, looks at your specific profile and the time you actually have, and maps a highly adapted plan to the start line.

01 · Race demands
What the Eiger throws at you
  • 3,600m of climbing over a few long, sustained ascents: the day is won on the climbs.
  • Technical, rocky, exposed high-mountain singletrack descents, ridden on deep-fatigue legs.
  • Racing above 2,000m, where you lose a few percent of power and descents turn genuinely cold.
  • A 5 to 9 hour day for most riders, with fast-changing Alpine weather and long gaps between feeds.
02 · Key sessions
What your weeks look like
  • Tempo and threshold climb repeats: 3 to 4 x 15min on a long climb for sustainable climbing power.
  • Big climbing days: 4 to 6 hour rides banking 2,000 to 3,500m of ascent.
  • Descend-under-fatigue: technical descents saved for the end of a long ride, mirroring the race.
  • Sweet spot on gradient: 2 to 3 x 15min at 88 to 94% FTP to lift your threshold without frying you.
03 · Shaped around you
Not a generic schedule
  • Built from your current fitness and the time you actually have
  • Adapts every week as Beina learns how you respond
  • Syncs your sessions straight to Garmin and Wahoo
  • One clear next session, never a wall of spreadsheet
372 days to the start line
Sign up. Start training.
Get your Eiger Bike Challenge plan