Results/Photos

Date: Sept. 27, 2026 Participant: Nina Brookes #10363 Race: 2026 Boulderthon Marathon Distance: 26.2 miles

Steady Early Pace Gives Way to a Tougher Final 10K Nina Brookes finished the 2026 Boulderthon Marathon in 4:27:47, trailing her 2025 result of 4:16:31 on the same course. She ran an even effort through the first half, holding between 8:43 and 9:37 per mile through mile 17 and keeping her cumulative pace close to 9:10. Miles 1 through 10 were her most consistent stretch, settling to a 9:01 min/mile pace by the ten-mile mark. The back third slowed considerably, with splits climbing into the 11-to-14-minute range between miles 18 and 23, before tightening again to roughly 11-minute pace over the closing miles. Racing at altitude in Boulder, which sits above 5,000 feet, that early consistency stands out even with the late slowdown. Working on carrying a bit more of that first-half rhythm into the final 10K could help her hold pace deeper into future marathons.