ORAMM (The Off-Road Assault On Mt. Mitchell)
📍 North Carolina, USA
mtb
Date
24–26 July 2026
Distance
98.5km · 100.9km
Elevation
2,712 m
Difficulty
mtb
Arrowhead Ultra 135
International Falls, Minnesota, USA · Late January 2027 (TBA)
Difficulty: 5/5 — Brutal
A 217-mile ultra-endurance mountain bike race held in late January in the USA, this event challenges riders across unknown but likely brutal off-road terrain in severe winter conditions.
Visit official site →- Distances
- 217 miles
- Surface
- singletrack, dirt, gravel
- Typical W/kg
- 3.2–4.2
Rider fit
Who it's for
This race is designed for the most resilient and self-sufficient ultra-endurance cyclists who thrive in extreme cold, isolation, and punishing off-road conditions.
Who will struggle
Riders unaccustomed to prolonged exposure to severe winter weather, navigating vast distances in solitude, or lacking robust cold-weather gear and self-reliance skills will find this event exceptionally difficult.
Training focus
Training should heavily emphasize extreme cold weather endurance, developing the mental fortitude for isolation, and perfecting skills for sustained power output through varied, potentially snow-covered, off-road terrain.
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 primary distance offered in the Arrowhead Ultra 135?+
The race features a known distance of 217 miles.
What type of terrain can participants expect in this mountain bike race?+
As a mountain bike discipline event, riders should anticipate navigating off-road surfaces such as singletrack, dirt, and gravel.
How challenging is the Arrowhead Ultra 135?+
This race is estimated to be exceptionally brutal, given its ultra-endurance nature, mountain biking discipline, and late January timing in the USA.
When is the next Arrowhead Ultra 135 scheduled?+
The next edition of the race is planned for late January 2027, with the specific date still to be announced.
What cycling discipline does the Arrowhead Ultra 135 fall under?+
This event is categorized as a mountain biking (MTB) race.
In which country does the Arrowhead Ultra 135 take place?+
The race is held in the USA.