Results/Photos

Date: Sept. 27, 2026 Participant: Laura Cook #10939 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Early Miles Give Way to a Late-Race Fade Laura Cook completed the 2026 Boulderthon Marathon in 4:20:06, averaging 9:55 per mile across the 26.2-mile course through downtown Boulder, finishing on the Pearl Street Mall. Cook's early pacing was remarkably even, holding between 9:00 and 9:35 per mile through the first 15 miles, with mile 10 her quickest of the day at 8:43. From mile 16 on, her splits eased into the 10:3011:57 range, a shift that coincided with the climb through altitude that defines running in Boulder, sitting above 5,000 feet. That stretch included the miles around the lululemon Power-Up Zone near mile 22.5, where her pace settled near 11:50. She rallied over the final mile, dropping back to 10:07 per mile to close out the race.