Hell Creek Half & 50k
Aug 21, 2027Sylvan Grove, KS50K, Half Marathon
1 mi from Hell Creek 100, by Ultraverse Supplements
Registration open
Hell Creek 100
Sylvan Grove, KansasUltraverse Supplements
- 10K entry
- $80
- Aid stations
- 3
- Days to register
- 2
At a glance
- Date
- Oct 30 – Nov 1, 2026
- Location
- Sylvan Grove, Kansas
- Elevation gain
- 10,120 ft
- Aid stations
- 3, 2 with crew access
- Registration
- Open until Oct 24, 2026, via ultrasignup.com
Listed from UltraSignup. Checked Oct 19, 2026.
Plan this race for free
3 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
The Hell Creek 100 Race Series takes place on the Switchgrass Mountain Bike Trail at Wilson State Park in Sylvan Grove, KS, featuring 20-mile loops with options from 10K to 140 miles. It boasts the most elevation gain and loss of any 100-miler in Kansas on rugged, easy-to-follow single-track trail with beautiful views of Wilson Lake.
Key dates
Early ends
Apr 28, 2026
Early ends
Apr 29, 2026
Registration closes
Oct 24, 2026
Race day
Oct 30, 2026
Pricing
5-Person Team 100
After Apr 29
$625
Pure Hell 140
After Apr 30
$355
100 Miler
After Apr 30
$290
100K
After Apr 30
$220
20 Miler
After Apr 30
$125
10K
After Apr 30
$80
Email me updates about Hell Creek 100
Registration openings and major changes, like a new date or a cancellation.
Aid stations
3| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Start/Finish Main aid station at the start/finish area. Crew allowed. Drop bags allowed. | 0.00 miles | -- | foodvegan optionswatersoda+3 | ||
Hell Hill Visited twice per loop at approximately 10.5 miles and 16.75 miles. Porta-potties available. 20-milers are NOT allowed crew here. | 10.50 miles | -- | foodvegan optionswatersoda+3 | ||
Unmanned Water Station Unmanned water-only station at mile 5 of the loop. | 5.00 miles | -- | water |
Entry transfers
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Race planning
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