Results/Photos

Date: Sept. 27, 2026 Participant: Sarah Arpin #20378 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Middle Miles Power a Strong Half Marathon Finish Sarah Arpin completed the Half Marathon at 2026 Boulderthon in 2:15:09, an average pace of 10:19 per mile. She finished 247th out of 620 in the F 30-34 division. Arpin's race shape showed a deliberate build: after opening miles near 10:34-11:09 pace, she settled into a strong middle stretch from miles 3 through 8, holding between 9:29 and 9:48 per mile - the fastest sustained running of her race. That effort brought her cumulative pace down to 9:55 per mile by mile 8. The closing miles eased back into the 10:31-11:27 range as she worked toward the finish. Given Boulder's elevation above 5,000 feet, that middle-mile consistency stands out as the highlight of the day, and there's room to explore extending that rhythm deeper into the second half next time.