Results/Photos

Date: Sept. 27, 2026 Participant: William Callahan #31659 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Pace Through the Field, Capped by a Strong Fifth Mile William Callahan finished the 10K in 55:27, an average pace of 8:56 per mile. His mile splits stayed tight through the first four miles, holding between 8:48 and 9:03, before he found his best mile of the race in mile 5 at 8:10. The final mile eased to 9:46 as he closed out the effort. Boulder's elevation, over 5,000 feet, made this a demanding pace to sustain, and Callahan's consistency across the first four miles set up his standout fifth mile before the finish on the Pearl Street Mall in downtown Boulder.