Results/Photos

Date: Sept. 27, 2026 Participant: Roberto Chavira #40287 Race: 2026 Boulderthon 5K Distance: 3.1 miles

Strong Start Fades Over Final Mile Roberto Chavira finished the 2026 Boulderthon 5K in 29:06, an overall pace of 9:23 per mile among the field of 2,677. Chavira built an early rhythm, covering the first mile in 8:43 and the second in 8:28, pushing his cumulative pace to 8:35 per mile by the two-mile mark. The final mile slowed to an 11:02 split, pulling his overall pace back to 9:23 by the finish. That opening two-mile stretch stood as the strongest running of his race, and tightening the closing mile could bring his overall time down. Racing at altitude in Boulder, which sits above 5,000 feet, adds a layer of difficulty to any pacing plan across a 5K distance.