Results/Photos

Date: Sept. 27, 2026 Participant: Henry Bieber #31125 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Build to a Strong Fifth-Mile Surge Henry Bieber completed the 10K in 59:13, an average pace of 9:33 per mile. His race showed a clear pattern of acceleration: after opening in 10:02 for the first mile, he trimmed his pace in each successive mile, dropping to 9:49, then 9:37, then 9:23, before hitting his quickest mile of the day between miles 4 and 5 at 8:31. He eased slightly over the closing mile, finishing in 9:55, but the overall trend across the course was one of sustained, disciplined improvement. That fifth-mile push stands out as the highlight of the run, a full minute per mile faster than his opening pace. Racing at Boulder's altitude of over 5,000 feet, Bieber's ability to find another gear late in the race speaks well of his pacing strategy and fitness heading into the closing stretch.