Copper Kings 100
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Copper Kings 100 : Butte, Montana, June 25-26, 2027
Copper Kings 100 is a 100 mile loop ultramarathon held in and around Butte, Montana. The course starts and finishes at the Belmont Mine and incorporates about 63 miles of the Continental Divide Trail. The route passes through the Beaverhead-Deerlodge National Forest and uses trails in Butte-Silver Bow and Jefferson counties. The event is fully permitted by the United States Forest Service and local authorities.
Course statistics include a start elevation of 5,650 ft, a highest point of 8,400 ft, and a total of 13,960 ft of vertical gain and loss. Much of the course sits above 6,500 ft, and the elevation gain is concentrated between the first and last aid stations. Some aid stations are widely spaced, with the longest segment exceeding 17 miles. The event uses a 40 hour overall cutoff and includes a nonbinary division. The race does not require a qualifying result for entry.
Registration is scheduled to open in December, the day after the Western States Endurance Run lottery draw. Proceeds from the event benefit the Continental Divide Trail Coalition, Our Lady of the Rockies, the Mile High Nordic Ski Education Foundation, and the Montana Endurance Trail Foundation. The 2027 edition serves as an official qualifier for the 2028 Western States Endurance Run.
The organizer publishes a runners and crew guide, race results from prior years, and a policy outlining refunds, credits, and cancellation terms. Visit the organization's website for the most recent information.
