Date: Sept. 28, 2025 Participant: Cooper Castellaw #26471 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 Pace and Top Division Performance Cooper Castellaw achieved a significant milestone in the 2025 Boulderthon Half Marathon, completing the race in a total time of 1:13:24. With an overall average pace of 5:36 min/mile, Cooper consistently demonstrated strong pacing throughout the event. Notably, he excelled in the M20-24 division, frequently leading or maintaining near the top, showcasing his competitive edge within this category. A standout performance came in the final mile, where Cooper clocked a split time of 5:08, marking his fastest segment. Maintaining an impressive level of consistency, Cooper's splits varied only slightly, particularly with his second and third miles holding steady around the 5:30s. Ahead of many competitors out of 6546 participants, he finished 9th overall and within his gender, highlighting his strong execution and determination. For future races, continued focus on early race pacing could further enhance his already impressive results.