Thunder Mountain 50K Trail Challenge
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Thunder Mountain Trail Challenge
This trail race is scheduled for Saturday, August 8, 2026, at the Horse Canyon Trail Junction in the High Sierra of Northern California. The course sits at roughly 7,400 feet elevation and includes about 7,500 feet of total climbing.
Distances
- 5.6 miles
- 10.5 miles
- 21 miles
- 50K
The 50K is run as three repeats of the 10.5 mile loop. Each loop includes a 7.4 mile section with no aid support. There are two aid stations on course; runners will pass each aid station three times. Crew support is allowed at the Start/Finish aid station and at the Thunder Mountain Trail Head aid station.
The course begins on fire roads near Highway 88 and includes two road crossings that are marked with signage. Cell phone reception may be unreliable on parts of the course. Race poles are permitted and pacers may join runners for the final loop starting at mile 20. Loop distances may vary slightly due to trail conditions or GPS discrepancies. Cutoff times apply at aid stations.
Entry fees range from $75 to $160 and the event has a 100 runner limit. Online registration is available through the evening before the race and race day registration is offered. Entry fees are non refundable but may be transferred to a future event with prior notice.
Alpine summer weather can be variable, with possible heat, cold, wind, snow, hail, or lightning. Runners should plan for sun and rain protection and be prepared for mosquitoes. All finishers receive a commemorative finisher medal. Visit the organization's website for the most recent information.
