Results/Photos

Date: Sept. 27, 2026 Participant: Valeria Acosta #21450 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Strong Start, Steady Finish Around a Midrace Dip Valeria Acosta finished the half marathon in 2:29:37, an 11:25 min/mile pace. She opened with six miles clustered tightly between 10:35 and 10:53, building a solid cushion before miles 7 and 8 slowed to 13:52 and 13:38. From there she rebuilt her rhythm, working back down to an 11:13 pace by mile 12 and closing with a 10:22 final mile, the fastest mile of her race. That opening six-mile stretch stands out as her most efficient running of the day, remarkably consistent given Boulder's altitude of over 5,000 feet. Her recovery through miles 9 and 10 carried her past the course's lululemon Power-Up Zone near mile 9.5, setting up the strong close into downtown Boulder.