Front Range Ultra Dayze
SEP
3-7
2026
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Eternal Damnation Backyard Ultra
Eternal Damnation Backyard Ultra is a last-man-standing backyard ultra scheduled for April 18, 2026. The event uses a repeating-lap format: each lap is 4.167 miles, and runners must complete each lap within one hour. The event continues in this format until only one runner remains.
The event is limited to 100 runners and is held in the Hell Creek Area at Wilson State Park on the Switchgrass Mountain Bike Trail. The organizer is Ultraverse Supplements. Visit the organization's website for the most recent information.