Results/Photos

Date: Sept. 27, 2026 Participant: Isaac Klos #20991 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Fast Start Fuels Strong Half Marathon Finish Isaac Klos crossed the line in 1:30:19, placing 143rd overall out of the field of 7,223 and 121st among men, a top-tier finish for the 19-year-old. He also finished sixth in the men's 15-19 division. Klos opened with his fastest mile of the race at 6:05, and held pace in the 6:12-6:23 range through six miles, his strongest sustained stretch of the day. From there his miles settled into the 7:07-7:36 range as he passed the lululemon Power-Up Zone near mile 9.5, closing steadily to the Pearl Street Mall finish at over 5,000 feet of altitude.