About the race
The original 100-mile ultramarathon at altitude, out and back over Hope Pass in the Rockies. Third Saturday in August.
Typical weather
August is peak summer. Heat and humidity are the variable that matters most; pacing and hydration for temperature can decide your day.
Who it favors
Ultras reward patience, fuelling and durability over speed. The winner is rarely the fastest runner, just the one who keeps eating, keeps moving, and falls apart the least.