Results/Photos

Date: Sept. 27, 2026 Participant: Shun Yoshida #13497 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Strong Early Miles Give Way to a Steady Fade Over the Marathon's Back Half Shun Yoshida completed the 2026 Boulderthon Marathon in 4:38:42, an overall pace of 10:38 per mile. Yoshida opened fast, covering the first ten miles in even splits near 8:52-9:35 per mile, holding a cumulative pace under 9:05 through mile 10. The middle miles held steady in the 9:00-9:40 range through mile 17, before the pace eased into the 10:30-11:35 range from mile 18 to 20. The closing stretch from mile 21 to 23 slowed further, with cumulative pace climbing from 9:57 to 10:29, before settling out over the final three miles. His strongest mile-plus stretch came early, from mile 1 to mile 6, sustained at roughly 8:53 per mile. That opening effort came at over 5,000 feet of elevation in Boulder.