Results/Photos

Date: Sept. 27, 2026 Participant: Yunpeng Ji #13278 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Pace Fuels a Top-10% Marathon Finish Yunpeng Ji, 30, of Boulder, CO, ran the 2026 Boulderthon Marathon in 3:52:22, placing 277th overall out of the field of 3,305 and 52nd among women. Her early miles settled near 8:509:00 per mile, and she tightened that pace through the middle miles, hitting 8:47 per mile by mile 20. The stretch from mile 10 to 11 stood out as her fastest of the race, clocked at 8:07, a clear surge before the course carried her back into a steady middle-race rhythm. Miles 22 through 24 slowed to the 9:129:41 range as the cumulative effort built, but she closed strong, dropping back to 8:52 per mile over the final mile into downtown Boulder. Given Boulder's elevation above 5,000 feet, her ability to hold sub-9:00 pace for the bulk of the race speaks to well-managed effort throughout.