Date: Sept. 28, 2025 Participant: William Hayes #10361 Race: 2025 Boulderthon Marathon Distance: 26.2 miles Weather: Perfect running weather with temperatures in the 50's to 70's and nice cloud cover

Early 9:29 Pace Through 10 Miles; Second Half +1:27:56—Aim for Even Splits Finish 5:44:36 (13:09/mi). Miles 1–2: 8:39 each. 10M: 1:34:53 (9:29/mi). Half: 2:08:20 (9:52/mi). 20M: 3:51:59 (11:35/mi). Second half: 3:36:16 (+1:27:56 vs first half). Pace slowed after mile 16: splits 17–23 ranged 16:21–20:58; slowest mile 23 (20:58). Final mile: 20:08. To stabilize late miles, start closer to overall pace: open the first 10 miles around 12:45–13:15/mi instead of sub-10:00. Practice even-split long runs and light negative-split tempos (last third 10–20 sec/mi faster). Use run-walk intervals before fatigue to steady cadence. Add weekly strength (glutes/hips/core) and stride drills to maintain form late. Set watch alerts to cap early pace and smooth the first 5 miles.