Results/Photos

Date: Sept. 27, 2026 Participant: Brennan Butler #22185 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Pacing Powers a Strong Finish on Pearl Street Brennan Butler completed the half marathon in 2:21:43, averaging 10:49 per mile. His pacing stayed remarkably consistent across the distance, holding between 10:52 and 11:06 per mile through the first eleven miles before accelerating in the closing stretch. That final push stood out: miles 12 and 13 came in at 10:23 and 10:08, his two fastest full miles of the race, capping things off with a strong drive into the finish on the Pearl Street Mall. This closing surge is especially notable given Boulder's elevation above 5,000 feet, where thinner air typically makes late-race gains harder to find. Butler's ability to negative split late in the race, rather than fade, reflects well-managed effort and pacing discipline over the full 13.1 miles.