Results/Photos

Date: Sept. 27, 2026 Participant: Melissa Guilfoyle #23429 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Start Gives Way to a Strong Closing Kick Melissa Guilfoyle covered the Boulderthon half marathon in 2:28:00, an 11:17 min/mile pace. Her race opened briskly, with a 9:45 opening mile, and she held sub-10:20 pace through the first six miles. The middle miles brought a gradual slowdown, bottoming out with an 11-to-13-minute stretch between miles 9 and 11, before she rallied over the final two miles to close near 12:00 pace. That opening mile stood as her fastest of the day, and her first 6 miles, sustained near 10:17 pace, were the most consistent stretch of the race. She would have passed the lululemon Power-Up Zone near mile 9.5 as her pace began to soften, a tough stretch to power through at Boulder's altitude above 5,000 feet. Tightening the mid-race dip could sharpen a future performance.