Results/Photos

Date: Sept. 27, 2026 Participant: Vu Nguyen #30166 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Negative Split Mile Highlights Steady 10K Effort Vu Nguyen completed the 2026 Boulderthon 10K in 1:50:39. His mile splits held close together through the first four miles, hovering between 17:36 and 18:25, before he found his best rhythm of the day in mile five, covering it in 16:37 his fastest mile of the race. That surge briefly pushed his overall pace under 17:40 per mile before the final mile eased back to 19:33 as he came into the finish. Racing at altitude, with Boulder sitting above 5,000 feet, Nguyen's ability to produce a negative split mid-race stands out as the highlight of his effort. Given the steady early pacing and the strong fifth mile, he may find value in working on sustaining that faster rhythm deeper into future 10Ks.