When Is The Boston Marathon 2025 Start. If it’s warm out (not great for running 26.2 miles), there’s the pool on. The rolling start times for the rest of the runners begin at.
Live coverage of the 2025 boston marathon will air on wcvb channel 5 in boston beginning at 4 a.m. Espn2 will broadcast the boston marathon from 8:30 a.m.