Hell of Hunterdon
📍 New Jersey, United States
gravelroadBeginner friendly
Date
March 2027 (TBA)
Distance
29 miles · 55 miles · 81 miles
Elevation
1,768 m
Difficulty
gravel
Weld County Grinder
Nunn, Colorado, United States · 30 May 2026
Difficulty: 3/5 — Hard
A challenging 67-mile unsupported gravel grinder traversing the exposed terrain of the Pawnee National Grasslands in northern Colorado.
Visit official site →- Distances
- 67 miles
- Elevation
- 731 m
- Surface
- gravel, dirt
- Typical W/kg
- 2.5–3.4
Rider fit
Who it's for
Self-sufficient gravel riders comfortable with long, unsupported efforts and variable weather conditions.
Who will struggle
Riders who rely on course markings, support vehicles, or easy access to cell service and aid stations.
Training focus
Endurance training for long, wind-exposed gravel roads and self-supported pacing.
Are you ready for this race?
Compare your W/kg to see how you stack up against this race's typical level — and which races fit you best right now.
FAQs
What is the distance of the Weld County Grinder?+
The route covers a distance of 67 miles.
Is there a registration fee?+
No registration fee or payment to ride is required, though 'pay what you can' contributions are accepted to cover event costs.
Are there support vehicles or course markings?+
No, this is an unsupported, unmarked, and no-SAG ride, meaning participants must be 100% responsible for their own navigation and safety.
Where does the ride start and finish?+
The event starts and finishes at Nunn Park, located at 4th & Lincoln St in Nunn, Colorado.
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