Results/Photos

Date: Sept. 27, 2026 Participant: Jason Kasenberg #10044 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Strong Front Half Carries Steady Marathon Finish Jason Kasenberg completed the Boulderthon Marathon in 4:36:05. His cumulative pace held between 9:02 and 9:10 per mile through the first 14 miles, reflecting a well-controlled opening effort. Miles 9 through 12 stood out as his strongest stretch, averaging roughly 8:47 per mile, the fastest sustained running of his race. From mile 15 onward, his per-mile pace eased steadily, extending into the low double-digit and mid-teens range by miles 1923 before settling into a 12:0613:35 pace over the final three miles to the finish. Kasenberg's race concluded on the Pearl Street Mall in downtown Boulder, a city sitting above 5,000 feet of elevation worth noting given the pace he sustained through the early and middle miles of the course.