Date: Sept. 28, 2025 Participant: Keiji Chan #27303 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 Pacing Leads to Improved Performance Keiji Chan delivered an impressive performance at the 2025 Boulderthon Half Marathon, completing the race in 1:28:21 with an average pace of 6:44 min/mile. Keiji ran evenly through the race, maintaining consistent pacing, with most splits ranging from 6:41 to 7:14 min/mile. Notably, Keiji improved their time from the 2024 Boulderthon by 1:30 minutes and improved their pace by 7 seconds per mile. Keijis strategic pace helped him achieve an overall placement of 128 out of 6,546 runners and 13th in his division (M20-24). The most significant progress was observed between mile 12 and 13, where Keiji recorded the fastest split at a 6:26 min/mile pace. While maintaining a steady pace, theres potential for enhanced positioning. Considering targeted speedwork could lead to further personal records and improved division ranks in future races.