Hardrock 100 takes place on Fri, Jul 9, 2027 in Silverton, United States. The main route is 163.8 km.
- Date
- Fri, Jul 9, 2027
- Start
- Silverton 🇺🇸
- Distance
- 163.8 km
- Climbing
- 10,192 m
- Level
- Open to all
The Hardrock 100 is a grueling 100-mile mountain ultramarathon featuring over 33,000 feet of climb across the rugged San Juan Range of Colorado.
Official event pageWhat this race demands
The Hardrock 100 demands sustained climbing capacity and extreme muscular durability to complete 163.8 kilometers and 10,192 meters of elevation gain across mountain terrain.
Climbing volume
Accumulating 10,192 meters of elevation gain over a 163.8-kilometer distance requires continuous vertical ascent and descent capacity in high-altitude mountain terrain.
Muscular durability
Covering a 100-mile mountain ultramarathon demands profound resistance to eccentric muscle fatigue caused by steep descents and extended time on feet.
Extended pacing
The massive distance and elevation profile require rigorous energy management to sustain forward motion across a multi-hour mountain effort.
A race of this duration requires continuous carbohydrate intake of 60 to 90 grams per hour to sustain output and prevent severe glycogen depletion.
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 Hardrock 100 is 46 weeks away. This is how a coach divides that time. The first phase starts now.
01Base34 weeks · Aug 22, 2026 – Apr 16, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Apr 17, 2027 – May 28, 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 29, 2027 – Jun 18, 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 19, 2027 – Jul 2, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jul 3, 2027 – Jul 9, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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