Results/Photos

Date: Sept. 27, 2026 Participant: Brooke Arnson #30853 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Pace Carries Strong 10K Finish Brooke Arnson completed the 2026 Boulderthon 10K in 55:07, an 8:53 per mile average. Her opening mile came in at 8:29, and she held between 8:23 and 8:42 through the third mile, keeping her cumulative pace tight at 8:268:31. A slight dip through mile four (9:05) nudged her overall pace to 8:39 before she rebounded with an 8:34 fifth mile, her strongest full-mile stretch of the race. The finish softened over the closing mile, but the middle miles reflected consistent, controlled effort across a course that finishes on the Pearl Street Mall in downtown Boulder, at over 5,000 feet of elevation.