Results/Photos

Date: Sept. 27, 2026 Participant: Emma Barker #21100 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Negative-Split Half Marathon Puts Runner in Top 10% of the Field Emma Barker finished the half marathon in 1:44:05, placing 496th overall and 111th among women in the field of 7,223 registrants. That result came from a steady build: after an 8:39 opening mile, she trimmed her cumulative pace nearly every mile, closing with four straight sub-7:55 splits to finish at 7:56 per mile overall. Her fastest mile came at mile 10, a 7:42 split, right after passing through the lululemon Power-Up Zone near mile 9.5 of the course. That surge continued through the final three miles, none slower than 7:52, showing strong finishing strength at Boulder's altitude above 5,000 feet. Given how well the back half held up, a slightly more even opening mile could be worth exploring next time out.