Results/Photos

Date: Sept. 27, 2026 Participant: Chelsea Renslow #30790 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Strong Start Fuels a Steady 10K Finish Chelsea Renslow completed the 2026 Boulderthon 10K in 58:35, an overall pace of 9:27 per mile. She opened with her fastest miles of the race, covering the first two at 8:32 each, then eased through the middle miles before closing out the back half. Running at Boulder's altitude of over 5,000 feet, Renslow's early pace reflected strong positioning through the first two miles, holding a sub-8:35 rhythm before a gradual settle into the mid-9:00s range for miles three through five. That opening stretch stood out as the strongest of her race, setting a solid foundation for the final miles into downtown Boulder.