Results/Photos

Date: Sept. 27, 2026 Participant: Heidi Seal #31979 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Pacing Carries Strong Middle Miles Heidi Seal covered the 10K in 52:48, an 8:31 min/mile average pace. Her race built steadily through the middle miles, holding between 8:04 and 8:38 per mile from mile two through five before easing back over the final stretch. Mile five stood out as her fastest full mile, clocked at 8:04, capping a run of consistent splits that kept her cumulative pace under 8:25 for the majority of the race. That effort came at Boulder's altitude of over 5,000 feet, adding weight to the steadiness she showed through the race's core miles.