Western States 100-Mile Endurance Run takes place on Sat, Jun 26, 2027 in Auburn, United States. The main route is 161.3 km.
- Date
- Sat, Jun 26, 2027
- Start
- Auburn 🇺🇸
- Distance
- 161.3 km
- Climbing
- 5,500 m
- Level
- Open to all
Your 38-week plan to Western States 100-Mile Endurance Run
The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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The Western States 100-Mile Endurance Run is the world's oldest 100-mile trail race, starting in Olympic Valley, California and ending in Auburn, California.
What this race demands
The Western States 100-Mile Endurance Run demands extreme multi-hour pacing discipline and immense lower-body durability to cover the 161.3 km trail distance.
Ultra-Distance Durability
Covering 161.3 km on a trail requires maintaining forward progression and managing muscular fatigue for many hours, placing a heavy load on the musculoskeletal system.
Extended Pacing Control
Because of the 100-mile distance, athletes must strictly manage exertion levels from the start in Olympic Valley to the finish in Auburn to prevent premature energy depletion.
Given the exceptionally long duration of a 100-mile trail run, athletes should target an intake of 60 to 90 grams of carbohydrates per hour to sustain energy levels.
Your road to race day
Race day at Western States 100-Mile Endurance Run is 38 weeks away. This is how a coach divides that time. The first phase starts now.
01Base26 weeks · Oct 4, 2026 – Apr 3, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Apr 4, 2027 – May 15, 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 · May 16, 2027 – Jun 5, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Jun 6, 2027 – Jun 19, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jun 20, 2027 – Jun 26, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is Western States 100-Mile Endurance Run?
Western States 100-Mile Endurance Run takes place on Sat, Jun 26, 2027 in Auburn, United States.
How long is Western States 100-Mile Endurance Run?
The main route is 161.3 km.
What does Western States 100-Mile Endurance Run demand?
The Western States 100-Mile Endurance Run demands extreme multi-hour pacing discipline and immense lower-body durability to cover the 161.3 km trail distance.
How much climbing does Western States 100-Mile Endurance Run have?
Western States 100-Mile Endurance Run has 5,500 m of climbing.
Who is Western States 100-Mile Endurance Run for?
Western States 100-Mile Endurance Run is open to all participants.
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