Results/Photos

Date: Sept. 27, 2026 Participant: Samuel Kobayashi #13341 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Pace Through Boulder's Altitude Yields a Patient Finish Samuel Kobayashi crossed the marathon in 4:39:30, trailing his 2025 Boulderthon finish of 4:17:03 by over twenty minutes. His cumulative pace drifted between 10:25 and 11:25 min/mile for the bulk of the race, with a few sharp elapsed-pace bumps around miles 7, 14 and 16 before settling back down. His strongest stretch came from mile 10 to mile 13, where he covered three miles in roughly 26 minutes, dipping to an 8:27 split his fastest full-mile segment of the day. That effort pulled his overall pace down toward 10:26 min/mile at the halfway mark. From there, his pace held in a narrow band through the closing miles, including the stretch past the lululemon Power-Up Zone near mile 22.5, before he closed the final mile in 9:38, his second-fastest of the race, finishing strong on the Pearl Street Mall.