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Rocky's Backyard Ultra

Estes Park, United States • 11 Oct 2025

Event details

Rocky's Backyard Ultra is a backyard ultra held on October 11, 2025, just outside Estes Park, Colorado, at a private camp. The format requires runners to complete 4.167 miles in less than one hour, every hour, until only one runner remains. The last runner to complete a lap is the winner and the only official finisher; all other participants are marked DNF. The event lists a $1,000 cash prize and buckles for 100-mile finishers. Registration closes Fri, Oct 10 @ 11:59 PM MT.

Course and conditions

The course uses trails bordering Rocky Mountain National Park and includes roughly 500 feet of vertical gain. The route offers views of Long's Peak and the Twin Sisters mountain ranges. Included for participants are a custom Fractel beanie, a DNF or finishers award, and a stocked aid station. October weather averages daytime temperatures in the 50s, nighttime temperatures in the 20s, and about a 10% chance of major snow; participants should expect variable mountain conditions. The event notes a preferred lodging option at the Estes Park Quality Inn. Visit the organization's website for the most recent information.

United States Colorado Estes Park

Race information

Website Registration
4 mi
4.167 Miles per Lap
Visit the organization's website for the most recent information.
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