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Results/Photos
Sierra Nielsen #31915
10K
September 27, 2026
1:03:17
Chip Time
10:12
Pace (min/miles)
6.2
Distance
PERFORMANCE
913
2501
Overall
424
1532
F
64
236
F 20-24
Rankings
Race Recap powered by Laurel Intelligence
Date: Sept. 27, 2026 Participant: Sierra Nielsen #31915 Race: 2026 Boulderthon 10K Distance: 6.2 miles
Strong Start Carries Steady 10K Finish Sierra Nielsen completed the 2026 Boulderthon 10K in 1:03:17, an average pace of 10:12 per mile. Nielsen's opening 3 miles were the fastest stretch of her race, covering that distance in 28:25, an average pace of roughly 9:28 per mile. From there, her mile splits eased gradually through miles 4 and 5, before the final mile slowed further as she approached the Pearl Street Mall finish in downtown Boulder. The race capped a course that sits above 5,000 feet of elevation, a notable backdrop for her steady early pace.
