Copper Kings 100

Copper Kings 100 is a 100-mile ultramarathon in and around Butte, Montana, on June 26-27, 2026. The loop starts and ends at the Belmont Mine and runs through Beaverhead-Deerlodge National Forest in Butte-Silver Bow and Jefferson counties, including about 63 miles on the Continental Divide Trail. The course climbs from 5,650 feet to a high point near 8,400 feet, with about 14,400 feet of total vertical gain and loss.

Described by the organizer as a beautiful place to run, the event is fully permitted and donates proceeds to Our Lady of the Rockies, the Mile High Nordic Ski Education Foundation, and the CDT Coalition. Registration follows the Western States lottery. Visit the organization's website for the most recent information.