Results/Photos

Date: Sept. 27, 2026 Participant: Katherine Muff #11668 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Strong Start Fades Into a Hard-Earned Finish Katherine Muff finished in 3:50:19, placing 238th overall and 44th among women both inside the top 10% of the field. Her race opened fast: the first seven miles clicked by at a 7:58/mile pace, the quickest sustained stretch of her day. From there, mile splits gradually loosened, drifting into the 8:40s-9:00s through the middle miles before settling into the 10-11 minute range over the final 5K as fatigue set in. Boulder's elevation, over a mile high, adds context to a marathon effort like this one, where early pace and later miles diverge naturally under thinner air. Muff might look at ways to hold more of that early rhythm deeper into the race next time, though the overall result reflects strong positioning within a large field.