Results/Photos

Date: Sept. 27, 2026 Participant: Alexander Gilbert #20731 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Teen Phenom Cracks Top 20 Overall in Boulder Half Alexander Gilbert, 18, of Centennial, CO, finished the half marathon in 1:15:11, placing 16th overall and 16th among men in the field of 7,223 while topping the M15-19 division. That combination of pace and consistency underscores a strong, evenly-run race from start to finish. Gilbert's cumulative pace held remarkably steady, hovering between 5:39 and 5:44 min/mile from mile 2 onward, a sign of well-managed effort across the distance. His strongest single mile came at mile 4, split in 5:31, part of a stretch through miles 46 that included his two fastest miles of the day. With the finish on the Pearl Street Mall in downtown Boulder sitting above 5,000 feet this was a smooth, well-controlled effort worth building on.