Results/Photos

Date: Sept. 27, 2026 Participant: Tristan James #12189 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Even Pacing Early Gives Way to a Tougher Back Half Tristan James, 27, of Golden, CO, finished the 2026 Boulderthon Marathon in 3:59:59, averaging 9:09 per mile. He ran the first 13 miles in roughly 1:51:31, holding a tight band between 8:30 and 8:58 per mile throughout that stretch. From there, the pace gradually loosened, and the final six miles saw the steepest rise, with per-mile splits climbing into the 10:1811:34 range before he steadied things out to the finish. His sharpest running came from mile 10 to mile 13, covered in about 8:03 per mile, the fastest sustained stretch of his race. That surge came just before the course's lululemon Power-Up Zone near mile 22.5, on a route that finishes along the historic Pearl Street Mall in downtown Boulder, a city sitting above 5,000 feet of elevation.