Results/Photos

Date: Sept. 27, 2026 Participant: Guillermo Jaimes #42224 Race: 2026 Boulderthon 5K Distance: 3.1 miles

Strong Start Fades Late in Sub-20 5K Guillermo Jaimes finished the 2026 Boulderthon 5K in 19:27, placing 61st overall and 47th among men in a field of 2,677. That's a step back from his 2025 result of 18:43, when he finished 55th overall and 38th among men. Jaimes opened fast, covering the first two miles in 5:35 and 5:39 respectively, a strong pace given Boulder's elevation above 5,000 feet. That opening mile ranked among his quickest stretches of the race, but the closing mile slowed to 7:35, pulling his overall pace back to 6:16 per mile by the finish.