Results/Photos

Date: Sept. 27, 2026 Participant: Niamh Horan #13219 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Strong Front Half Carries Steady Marathon Debut Effort Niamh Horan finished the 2026 Boulderthon Marathon in 4:04:00. She built pace steadily through the first half, dropping from 9:15 for mile 1 to a race-best 8:02 for mile 11, and held sub-9:00 miles through mile 19 before easing over the closing miles to the finish on the Pearl Street Mall. That mile 11 split stands as her fastest full mile of the race, part of a strong middle stretch between miles 9 and 19 where she consistently ran under 9:00 pace. She passed through the lululemon Power-Up Zone near mile 22.5 as she began her final push toward downtown Boulder, a finish that sits at over 5,000 feet of elevation worth noting given the effort required at altitude.