Results/Photos

Date: Sept. 27, 2026 Participant: Sienna Noble #24537 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Pace Powers a Top-Tier Half Marathon Finish Sienna Noble ran 1:29:06 to finish 130th overall and 21st among women, placing third in the F 25-29 division. Her mile splits held in a tight 6:357:09 band across the 13.1 miles, reflecting a controlled, evenly-run race from start to finish. Her strongest stretch came in miles 10 through 12, covered in 20:17 (roughly 6:46 per mile), including a season-best mile 12 split of 6:35 as she closed toward the Pearl Street Mall finish. Given that this stretch included the approach to the lululemon Power-Up Zone near mile 9.5, Noble's ability to hold pace through that section speaks well of her pacing discipline. With Boulder's elevation over 5,000 feet as a backdrop, this was a well-executed, consistent performance.