Ring of Fire
📍 Oregon, USA
mtb
Date
26 September 2026
Distance
50 miles
Elevation
1,639 m
Difficulty
mtb
Oak Ass
Alabama, USA · 14 November 2026
Difficulty: 4/5 — Very hard
The Oak Ass is a demanding mountain bike race held in Alabama's Oak Mountain State Park, offering challenging 25, 50, and 100-mile courses. Built almost entirely on high-quality singletrack with significant climbing, it provides a pure off-road test that avoids gravel and roads.
Visit official site →- Distances
- 25 miles · 50 miles · 100 miles
- Surface
- singletrack, dirt
- Typical W/kg
- 3.2–4.5
Rider fit
Who it's for
It is designed for dedicated mountain bikers and endurance athletes seeking an authentic, highly technical trail race on premium singletrack.
Who will struggle
Riders who prefer smooth gravel paths, paved roads, or lack the technical handling skills and endurance for non-stop singletrack climbing will struggle on this course.
Training focus
Training should prioritize sustained aerobic capacity alongside upper body and core conditioning to withstand hours of continuous trail vibration and technical maneuvering.
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 distances are available at the Oak Ass race?+
Participants can choose between three distance options: a 25-mile race, a 50-mile race, and a 100-mile race (which consists of two 50-mile laps).
Are there any time limits or cut-offs?+
Yes, there is a strict cut-off time of 3:30 to reach the 66-mile mark of the race.
What is the course terrain like?+
This is a genuine mountain bike race composed almost entirely of demanding singletrack. Pavement, gravel, and double track are used very sparingly and only to facilitate passing opportunities.
Where are the aid stations located?+
Aid stations are placed at the midpoint and at the end of the 50-mile course lap.
When does packet pickup occur for the 100-mile competitors?+
Riders registered for the 100-mile race are required to pick up their packets on Friday evening before the race.
What facilities are available at Oak Mountain State Park?+
The park features campgrounds, cabins, six lakes, and a golf course. At the race start trailhead, participants have access to bathrooms, showers, and a dedicated bike washing station.