Results/Photos

Date: Sept. 27, 2026 Participant: Colin Trottnow #26592 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Pacing Powers a Strong Half-Marathon Finish Colin Trottnow completed the half marathon in 1:37:39, averaging 7:27 per mile. His pacing stayed remarkably consistent throughout, holding within a narrow band of his overall average from start to finish, with cumulative pace never straying far from the mid-7:20s. His strongest stretch came between miles 4 and 5, where he clicked off 7:13 and 7:12 splits, his fastest miles of the race. After a slight dip in the middle miles, he closed with a strong final mile at 7:17, finishing well on the historic Pearl Street Mall in downtown Boulder, a course that sits at over 5,000 feet of elevation. Given how evenly he managed the effort across 13.1 miles at altitude, this was a well-executed race overall, and there may be a touch more speed available in the middle third if he chooses to push there next time.