Date: Sept. 28, 2025 Participant: Izaac Stone #11585 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

Consistency with Gradual Improvement Izaac Stone completed the 2025 Boulderthon with an elapsed time of 4:33:07, maintaining an overall pace of 10:25 min/mile. Notably, this marks an improvement from his previous marathon at the 2024 Boulderthon by 4 minutes and 6 seconds and a pace increase by 9 seconds per mile. Stone's early miles showed promising control, with his fastest split at mile 12 at an 8:10 min/mile pace. Consistent pacing was observed in the first half, while a notable deceleration began after mile 16 with splits exceeding 10:00 min/mile. Interestingly, Stone's performance improved with higher competition. Despite the headcount in this year's event being significantly higher, he maintained a competitive position throughout. From his splits, late-race adjustments and pacing beyond the halfway mark could be beneficial. A focus on sustaining the strong early race pace might optimize his future marathon timing and placement. Keep building on this progress, especially on late-race endurance and pacing strategy.