Results/Photos

Date: Sept. 27, 2026 Participant: Pei Xun Woo #20931 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Strong Early Pace Holds Firm Through a Steady Half Marathon Finish Pei Xun Woo finished the 2026 Boulderthon Half Marathon in 1:40:59, an average pace of 7:42 per mile, placing 396th overall and 83rd among women in a field of 7,223. Woo opened fast, covering the first mile in 7:05 and settling into a 7:117:23 rhythm through mile five. A dip through miles six to eight, including an 8:28 split, briefly slowed her cumulative pace to 7:38, but she rallied over miles nine and ten at 7:42 and 7:35 to steady her overall rhythm. Her strongest sustained mile-plus stretch came from mile eleven to the finish, where she covered the final 2.1 miles in roughly 15:47, close to a 7:30 pace, closing out the race on the Pearl Street Mall in downtown Boulder with a well-controlled effort at over 5,000 feet of elevation.