Results/Photos

Date: Sept. 27, 2026 Participant: Emily O'Brien #11230 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Pacing Carries Strong Finish Through the Field's Top Tier Emily O'Brien crossed the marathon line in 3:56:50, an average pace of 9:02 per mile, placing 330th overall and 66th among women both inside the top 10% of the field. Her race held remarkably even through the first 20 miles, hovering between 8:50 and 8:57 per mile, before a natural late-race dip settled her final pace at 9:02. Miles 16 through 18 stood out as her strongest three-mile stretch, clicking off in 8:42, 8:41, and 8:44 noticeably quicker than her overall average and a sign of well-managed effort deep into the race. That stretch falls not far from Boulder's lululemon Power-Up Zone near mile 22.5, a boost she carried into the demanding closing miles before finishing on the Pearl Street Mall.