Date: Sept. 28, 2025 Participant: Katherine Olson #22608 Race: 2025 Boulderthon Half Marathon Distance: 13.1 miles Weather: Perfect running weather with temperatures in the 50's to 70's and nice cloud cover

Consistent Start, Challenging Finish Katherine's Boulderthon 2025 Half Marathon performance revealed a strong start, maintaining a steady pace of around 10:00 min/mile during the initial 4 miles, as shown by her 1-mile split times and consistent positioning in the F25-29 division. Through the first four miles, Katherine held a position in the top half of her division, peaking at 10:01 min/mile in mile 4, where she was also 290th in her division. After the 4-mile mark, pacing shifts became evident, with mile 5 at 16:07 min/mile, impacting her overall position to finish 723rd in her division. Despite a drop in pace through the middle sections, her final elapsed pace was 12:54 min/mile, culminating in a finish time of 2:49:02. The mile 8-9 segment included a noticeable rebound at a 9:28 min/mile pace, demonstrating strategic energy reserves for that stage. For future strategies, sustaining the early pace into later stages could benefit her overall performance.