Results/Photos

Date: Sept. 27, 2026 Participant: Lauren Umbarger #21041 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Consistent Early Pace Fuels a Solid Half Marathon Effort Lauren Umbarger finished the 2026 Boulderthon Half Marathon in 2:24:49, an 11:03 min/mile pace. Her race unfolded in two distinct phases: a strong, steady opening through six miles at roughly 10:38 per mile, followed by a gradual easing over the second half as fatigue crept in, including a dip to 12:02 at mile 11 before she rallied to close with an 11:09 split at mile 12. That opening stretch miles one through six stands out as her most efficient running of the day, anchored by a brisk 10:25 first mile. Given that Boulder sits above 5,000 feet, holding that pace through the early miles reflects solid pacing discipline. Tightening the gap between her early and late-race pace could be a useful focus for future half marathons.