Results/Photos

Date: Sept. 27, 2026 Participant: Vivian Nieves #32508 Race: 2026 Boulderthon 10K Distance: 6.2 miles

A Big Step Forward Vivian Nieves finished this years 10K in 58:42, a marked improvement over her 1:04:42 the previous year nearly six minutes faster and roughly a minute per mile quicker overall. Her race built steadily through the first four miles, holding between 9:16 and 9:32 per mile, before she hit her best stretch of the day in mile five, covering it in 8:56. The final mile eased to 10:18 as she brought it home. Running at altitude in Boulder, which sits above 5,000 feet, her pace stayed remarkably even across the course, a sign of well-managed effort from start to finish.