Results/Photos

Date: Sept. 27, 2026 Participant: Sharon Choi #10682 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Pacing Through 20 Miles Anchors Strong Marathon Finish Sharon Choi covered the Boulderthon Marathon in 3:57:51, an average of 9:04 per mile. Her race showed a clear shape: after an opening mile at 8:40, she settled into a tight band between 7:53 and 8:59 per mile through mile 20, holding a cumulative pace near 8:30 for most of the middle distance. The final 10K brought a shift, with per-mile splits climbing into the 10- and 11-minute range before a rebound to 9:50 over the last mile to the Pearl Street Mall. Her strongest stretch came from mile 1 through mile 20, where consistent pacing in the low 8:30s reflected well-managed effort at altitude, with Boulder sitting above 5,000 feet. The lululemon Power-Up Zone near mile 22.5 fell within the stretch where her pace eased, offering a marker along that closing section of the course.