HRCA Backcountry Wilderness Half Marathon
Oct 31Lone Tree, COHalf Marathon
25 mi from Popeye's Backyard Ultra, similar trail technicality to Popeye's Backyard Ultra, registration open
4 days
Popeye's Backyard Ultra
Larkspur, ColoradoField of 200
- Entry
- $95
- Aid stations
- 1
- Days to register
- 160
At a glance
- Date
- Apr 3, 2027
- Location
- Larkspur, Colorado
- Distances
- 4 days
- Aid stations
- 1, 1 with crew access
- Registration
- Closes Mar 31, 2027, via ultrasignup.com
Listed from UltraSignup. Checked Oct 18, 2026.
Plan this race for free
1 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
Popeye's Backyard Ultra is an open-ended last-runner-standing race on a 4.167-mile dirt and crushed-gravel loop at Greenland Open Space. Runners start a new yard every hour until only one runner remains or no participant can complete another yard.
Key dates
Registration closes
Mar 31, 2027
Race day
Apr 3, 2027
Pricing
Current price
$95
One price
Email me updates about Popeye's Backyard Ultra
Registration openings and major changes, like a new date or a cancellation.
Aid stations
1| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Corral aid station Aid is provided at the corral between yards; the aid station is staffed until the last runner finishes. | -- | -- | -- |
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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