SIGNATURE BOULDER MARATHON BOULDERTHON

EPIC DOWNTOWN FINISH • SPECTACULAR VIEWS 

"BEST NEW RACES" —  THE KNOW • 26.2, 13.2, 10k, KIDS RUN SUNDAY, OCTOBER 9' 2022 

COLORADO'S LARGEST FALL RUNNING WEEKEND

Limited Space Available - Register at boulderthon.org + SAVE $20 with code B.20 by the end of the month