Event Overview
| Date | Jul 9-11, 2027 |
|---|---|
| Location | Silverton, Colorado, USA |
| Format | Fixed-Distance |
| Terrain | Mountain |
| Region | North America |
| Distance / duration | 100 mi |
| State / area | Colorado (CO) |
| Course model | Loop |
| Elevation gain | 33,441 ft, as listed in the organizer's overview |
| Cutoff | 48 hours |
| Start | 6:00 AM Friday |
| Highlights | San Juan Mountains, Qualification and Lottery |
Course & Terrain
Counterclockwise mountain loop from Silverton for the 2027 edition.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Qualification | Qualifying-race requirements and lottery selection apply. The 2027 lottery application window is October 1–14, 2026, with the draw on December 5. |
Why This Race Matters
Hardrock 100 is a useful reference point for runners comparing long fixed-distance ultras that still unfold over multiple days. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.
Planning Notes
- Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
- Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
- Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
- The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
Related Preparation
- Compare verified US 100-mile races
- Open the 100-Mile format guide
- Open the Fixed-Distance format guide
- Compare all race formats
- Use the timed-race pace calculator
- Plan checkpoint arrivals and cutoff buffers
- Build a crew and drop-bag plan
- Build a race-specific gear checklist
Verification & Sources
Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated September 22, 2026. Organizers can revise details after review.
- Official Hardrock 2027 announcement — https://www.hardrock100.com/
- Official course and cutoff information — https://www.hardrock100.com/hardrock-course.php
- Official qualification requirements — https://www.hardrock100.com/hardrock-qualify.php
- Multiday Running event directory review scope: September 22, 2026.