Swiss Alps 100 takes place on Fri, Aug 6, 2027 in Fiesch, Switzerland. The main route is 160 km.
- Date
- Fri, Aug 6, 2027
- Start
- Fiesch 🇨🇭
- Distance
- 160 km
- Climbing
- 10,150 m
- Level
- Open to all
The Swiss Alps 100 is a spectacular ultra-trail event held in Fiesch, Switzerland, featuring challenging alpine routes that traverse the UNESCO-listed Aletsch Glacier, high suspension bridges, and rugged mountain passes.
Official event pageWhat this race demands
The Swiss Alps 100 demands absolute mastery of extreme vertical gain and extended trail-running durability across 160 kilometers of rugged alpine terrain.
Extreme Climbing Volume
Accumulating 10,150 meters of elevation gain over a 160-kilometer distance requires exceptional muscular endurance and power for relentless ascents and descents.
Extended Duration
Covering this distance across high-mountain passes and glaciers ensures an extraordinarily long day or multiple days on course, testing systemic fatigue resistance.
Alpine Durability
Traversing high suspension bridges and rugged mountain passes in an August summer event demands rigorous structural resilience to withstand pounding joints and high-altitude stress.
Given the ultra-distance format requiring well over 2.5 hours to complete, athletes should target 60 to 90 grams of carbohydrates per hour to sustain output.
Estimated finish times
Estimates by level, not promises. Your own number depends on your fitness on the day.
Your road to race day
Race day at Swiss Alps 100 is 50 weeks away. This is how a coach divides that time. The first phase starts now.
01Base38 weeks · Aug 22, 2026 – May 14, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · May 15, 2027 – Jun 25, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Jun 26, 2027 – Jul 16, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Jul 17, 2027 – Jul 30, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jul 31, 2027 – Aug 6, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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