This race gets high ratings. It fills up less than a half an hour after registration opens!

The fourth and most prestigious race of the Series is the epic Breckenridge 100, the B-68 or the B-32. These races begin and end in historic downtown and include demanding loops through some of Summit County’s beautiful high alpine trails.

Welcome to the 8th annual B-68 Marathon Race and B-32 Half Marathon Race, featuring the second and third loops of the big brother, the Breckenridge 100. The B-68 course is a unique combination of mountainous terrains, gaining approximately 9,000 feet. Two distinct cloverleaf style loops await Solo and Duo Team competitors. The B-32 races over the high alpine, technically challenging Loop 2.