When is Butte 100 MTB Race?

Butte 100 MTB Race takes place on Jul 18, 2026. That's in 1 month.

Where is Butte 100 MTB Race located?

Butte 100 MTB Race is held in Butte, Montana, United States.

What distances are available at Butte 100 MTB Race?

Butte 100 MTB Race offers the following distances: 104.1M, 54.6M, 29.6M.

How do I register for Butte 100 MTB Race?

You can register for Butte 100 MTB Race through the official registration page.

What is the typical weather for Butte 100 MTB Race?

Based on historical data, you can expect temperatures between 47°F and 84°F on race day. There's approximately a 4% chance of precipitation.

Butte 100 MTB Race (29.6M-104.1M) - Jul 18, 2026 | Butte, MT

Prepare for an unparalleled mountain biking challenge at the Butte 100 MTB Race, set to conquer the rugged terrain of Butte, Montana, on July 18, 2026. Renowned as "the most difficult mountain bike race in the country", this iconic event offers distances of 104.1 miles, 54.6 miles, and the 29.6-mile Sorini 25, catering to both world-class athletes and determined enthusiasts. The course, unfolding atop the breathtaking Continental Divide, features a unique figure-eight design for the 100-milers, ensuring you never encounter the same trail twice. Riders will navigate a diverse landscape, from dense wooded areas and buff packed dirt to decomposed granite and challenging high-altitude desert with heavy sand. Expect relentless climbing, including the notorious Basin Creek climb and the infamous "8 miles of hell," along with epic singletrack sections on the Continental Divide Trail, all delivering sweeping mountain views. Typical race day conditions in mid-July bring highs around 84°F and lows around 47°F, with only a 4% chance of precipitation, making for a demanding but often clear day on the trails.

The Butte 100 has grown from a grassroots gathering into a prestigious competition, attracting top riders from across North America. The race's reputation for difficulty is a badge of honor, with past participants describing it as "brutal" yet "most gratifying". The 100-mile course alone boasts an staggering 16,600 feet of elevation gain. Competitors are well-supported by a dedicated "neon army" of volunteers across numerous aid stations (nine for the 100-milers), where drop bags are strongly encouraged for this non-supported wilderness race. The race staging area at Homestake Pass serves as the vibrant start and finish line, hosting festivities, timing, and award ceremonies.

Beyond the grueling climbs and technical descents, the Butte 100 MTB Race offers an unforgettable experience defined by camaraderie, stunning scenery, and a profound sense of accomplishment. Whether you're tackling the full century, the challenging 50-miler, or the introductory Sorini 25, prepare for a true test of grit and skill that will leave an indelible mark on your racing journey.