Results/Photos

Date: Sept. 27, 2026 Participant: Ethan Leach #24307 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Negative Splits Power a Top-10% Half Marathon Finish Ethan Leach crossed the line in 1:47:52, placing 657th overall out of 7,223 in the field and 485th among men a top-10% overall finish. He also ranked 76th in the men's 20-24 division. The race showed a clear negative-split shape: an opening mile near 9:22 gave way to steady gains, with elapsed pace dropping under 8:30 by mile 8 and continuing to sharpen through the second half. His strongest stretch came from mile 11 to mile 12, covered in 7:27, the fastest mile of his race, as he pushed through the closing miles near the course's lululemon Power-Up Zone around mile 9.5. Given that Boulder sits above 5,000 feet, sustaining that late-race acceleration stands out as the defining feature of the effort.