Mark Sieczkowski — Race Results
Mark Sieczkowski has 1 recorded race from East Hampton, Connecticut, US.
Personal Bests
10K: 55:34 (Mystic Half Marathon & 10K, 2026-05-17)
Race Results
Date
Race
Distance
Time
Overall
2026-05-17
Mystic Half Marathon & 10K
10K
55:34
145