Results/Photos

Date: Sept. 27, 2026 Participant: Missa Kleppe #10619 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Even Early Pace, Strong Closing Mile Missa Kleppe, 19, of Castle Rock, completed the 2026 Boulderthon Marathon in 4:28:28, averaging 10:14 per mile across the 26.2-mile course. Kleppe ran a disciplined first half, holding between 9:03 and 9:58 per mile through mile 13. Her sharpest sustained running came from mile 9 to mile 13, a four-mile stretch covered in roughly 9:20 per mile pace. The middle miles brought her toughest test, with mile 21 to mile 22 slipping past 12 minutes per mile, before she found her rhythm again late, dropping to 9:46 per mile over her final full mile to close out the race. She crossed the finish on the Pearl Street Mall in downtown Boulder, a city sitting more than 5,000 feet above sea level.