Results/Photos

Date: Sept. 27, 2026 Participant: Joslin Some #32930 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Pace Through Five Miles, Then a Late Fade Joslin Some completed the 2026 Boulderthon 10K in 1:04:05. He settled into a consistent rhythm early, covering the first three miles in 9:44, 9:52, and 9:38, keeping his cumulative pace right around 9:45 per mile through the halfway point. That effort held nearly steady through mile five, with his overall pace sitting at 9:49 per mile at that mark, before the final mile slowed to 13:13, pulling his overall pace down to 10:20. The opening five miles were the strongest stretch of the race, run at a tighter and more even clip than the finish suggests. With the field topping 3,071 entrants, Joslin's race unfolded on a course that finishes on the historic Pearl Street Mall in downtown Boulder, a city sitting above 5,000 feet worth noting as context for the steady early miles before the late slowdown.