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
Leadville Trail 100 MTB
Colorado, USA · 15 August 2026
Difficulty: 5/5 — Brutal
This 105-mile mountain bike race ascends 3749 meters through the challenging, high-altitude Colorado Rockies, renowned as one of the most grueling endurance events globally. Riders navigate steep climbs, technical descents, and extreme elevations over 10,000 feet, making it a true test of physical and mental fortitude.
Visit official site →- Distances
- 105.3 miles
- Elevation
- 3,749 m
- Surface
- dirt, gravel, singletrack
- Typical W/kg
- 3–4
Rider fit
Who it's for
This event is designed for highly experienced mountain bikers with exceptional endurance, significant climbing ability, and the mental toughness to conquer extreme high-altitude conditions.
Who will struggle
Riders unaccustomed to prolonged high-altitude efforts, lacking strong climbing fitness, or unprepared for technical terrain and extreme endurance will find this race exceptionally challenging.
Training focus
Training should heavily emphasize high-volume endurance, climbing strength, technical descending skills, and, ideally, altitude acclimatization to prepare for the relentless demands of the course.
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
How do I enter the Leadville Trail 100 MTB?+
Entry is primarily through an event lottery, which opens from December 1st to December 15th, with results announced on January 8th. Further qualification paths are detailed on their Lottery & Qualification page.
What is the course like?+
The 105.3-mile out-and-back course in the Colorado Rockies features 12,304 feet (3749m) of elevation gain, ranging from 9,180 feet to a peak of 12,500 feet. It mostly follows forest rough service roads and high alpine two-track, with some singletrack sections.
Are there cut-off times for the race?+
Yes, participants must reach certain points by specific times; the 9-hour cut-off is for the Big Buckle, and the final cut-off for race completion and the Small Buckle is 12 hours from chip start time.
What is the minimum age to participate?+
Participants must be 18 years or older on race day to enter the Leadville Trail 100 MTB.
How much does it cost to enter?+
The entry fee for the Leadville Trail 100 MTB is $575, and for a tandem bike, it is $625 per bike.
What are the arrangements for packet pickup and drop bags?+
Packet pickup requires a photo ID and must be done in person at the Expo on Thursday or Friday. Drop bags can be dropped off on Friday at the Leadville Race Series Retail Store and must be clear plastic, clearly labeled with name, race number, and aid station.