Results/Photos

Date: Sept. 27, 2026 Participant: Lauren Sullivan #22320 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Fast Start Fuels a Steady Half-Marathon Finish Lauren Sullivan covered the half marathon in 2:17:40, an overall pace of 10:30 per mile. She opened briskly, clicking off her first mile in 9:47 and holding sub-10:00 pace through five miles, before the middle third of the race eased to the 10:4811:27 range between miles six and eleven. She then tightened back up over the final two miles, running 10:28 and 10:31 to close out the effort and settle her cumulative pace at 10:30/mile by the Pearl Street Mall finish. Her strongest one-mile-plus stretch came early: miles one through five averaged roughly 9:56 per mile, the quickest sustained running of her day. That opening surge came at altitude, with Boulder sitting above 5,000 feet, adding weight to the pace she banked before the second half settled in.