Results/Photos

Date: Sept. 27, 2026 Participant: Erica Sieff #31053 Race: 2026 Boulderthon 10K Distance: 6.2 miles

Steady Pace Carries Sieff Through Boulder's 10K Erica Sieff finished the 2026 Boulderthon 10K in 1:21:48, holding a consistent rhythm across the full distance. Her mile splits stayed within a tight band through the race, with a strong fifth mile at 12:15 marking her fastest full-mile stretch of the day. That surge followed a slightly slower third and fourth mile, showing good composure to rebound before the final stretch into downtown Boulder. Sieff's race played out at over 5,000 feet of elevation, a backdrop to any Boulder finish. Her even pacing across six miles reflects a well-managed effort, and there's room to build on that closing energy in future 10Ks by carrying the mile-five strength deeper into the race.