Date: Sept. 28, 2025 Participant: Haipei Chang #21589 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

Steady Performance in Boulderthon Half Marathon Haipei Chang demonstrated consistent pacing throughout the 2025 Boulderthon Half Marathon. Starting with a 7:15 min/mile pace, he quickly settled into a rhythm, hitting sub-7-minute miles by the second split. Notably, he maintained a commendable average pace of 6:57 min/mile across the race, clocking an overall time of 1:31:04. This consistency allowed him to advance from an initial position of 258th overall to finish in 160th place out of 6546 participants, showcasing steady progress through the ranks. Analyzing the splits, Haipei improved his position consistently with each mile, moving from 199th to 129th in his gender category, and from 48th to 32nd in his M30-34 division. He performed particularly well from miles 5 to 9, consistently maintaining a pace of approximately 6:46 min/mile. For future races, focusing on maintaining pace in the final miles could further enhance his performance, as a pace decrease was evident in the last few splits.