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
Silver Rush 50 MTB
Colorado, USA · 12 July 2026
Difficulty: 5/5 — Brutal
A challenging 50-mile mountain bike race with over 2400 meters of elevation gain on primarily dirt roads in the high-altitude terrain of Leadville, Colorado. This brutal event features technical climbs and fast descents, serving as a qualifier for the Leadville Trail 100 MTB.
Visit official site →- Distances
- 50 miles · 15.5 miles
- Elevation
- 2,108 m
- Surface
- dirt
- Typical W/kg
- 3.5–4.5
Rider fit
Who it's for
This race is ideal for experienced mountain bikers seeking a formidable test of endurance, technical skill, and mental fortitude at high altitude, particularly those aiming to qualify for the Leadville Trail 100 MTB.
Who will struggle
Riders new to mountain biking, those unfamiliar with high-altitude exertion, or individuals lacking significant climbing and technical descending experience will find this 50-mile course exceptionally difficult.
Training focus
Training should prioritize sustained power output for long, steep climbs, developing robust endurance, and honing technical bike handling skills for diverse dirt terrain and descents, all while incorporating altitude acclimatization if possible.
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 are the different race options available during the Silver Rush event?+
The event features the Silver Rush 50 MTB, a 50-mile race, and the Silver Rush 15 MTB, a 15.5-mile option suitable for newer riders. There's also the multi-sport Silver Rush Challenge combining running and biking.
Can you describe the terrain and course conditions for the Silver Rush 50 MTB?+
The 50-mile out-and-back course traverses Leadville's historic mining district, primarily utilizing dirt roads. It includes challenging technical climbs, high-speed descents, and offers panoramic views of 14,000-foot Rocky Mountain peaks.
What kind of aid is provided on the course, and what nutrition products are available?+
There are five well-stocked aid stations along the course. They provide Neversecond energy gels and high-carbohydrate sports drinks (C60, C30, C30+ caffeinated gels), as well as Skratch Labs hydration mix, energy bars, and chews.
What are the cut-off times for the Silver Rush 50 MTB?+
Racers must reach the Stumptown aid station at Mile 24 by 12:50 PM, the Printer Boy Inbound aid station at Mile 34.2 by 2:20 PM, and complete the entire 50-mile course by the 4:35 PM finish line cut-off, which is 8 hours and 30 minutes from the start.
Is the Silver Rush 50 MTB a qualifying event for other races?+
Yes, the Silver Rush 50 MTB serves as a qualifying event for the Leadville Trail 100 MTB, making it an excellent trial run for that longer race.
What are the age requirements for participation?+
Participants in the Silver Rush 50 MTB must be at least 16 years old on race day. For the Silver Rush 15 Mile MTB, the minimum age is 14, and there's a Juniors category for ages 12-18.