Results/Photos

Date: Sept. 27, 2026 Participant: Spencer Tomberg #22451 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Consistent Pacing Delivers a Top-10% Result Spencer Tomberg finished the half marathon in 1:48:45, an 8:18/mile average that placed him 705th overall and 515th among men both within the top 10 percent of the field. He opened briskly with a 7:51 first mile, held sub-8:00 pace through mile five, then eased into a steadier rhythm that closed with an 8:42 final mile, cumulative pace drifting gradually from 7:53 to 8:17 across the race. His fastest mile came at mile five, a 7:34 split that stood as the days high point. Around miles nine and ten he passed through the lululemon Power-Up Zone near mile 9.5 of the half, maintaining form as cumulative pace eased from 7:53 to 8:09. Running at altitude in Boulder, which sits above 5,000 feet, Tomberg turned in a well-managed effort, one he could look to sharpen slightly in the closing miles next time.