Results/Photos

Date: Sept. 27, 2026 Participant: Tanner Quinn #10170 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Strong Start Fades Late as Marathon Effort Cools Over Final 10K Tanner Quinn crossed the finish line in 4:03:23, averaging 9:17 per mile across the 26.2-mile marathon. Quinn built his race on a steady first half, holding between 8:16 and 8:40 per mile through the opening 13 miles and reaching the halfway point in 1:49:20. His strongest stretch came from miles 9 through 13, where he covered five miles in 41:10, an 8:14 pace, his fastest sustained segment of the day. From mile 20 onward, his per-mile splits climbed into the 10- to 12-minute range, cooling his overall pace to the 9:17 finish. That fade came in the closing miles of a course that, at altitude in Boulder, sits above 5,000 feet before finishing on the historic Pearl Street Mall.