Cold Weather Races Show How Climate Affects Running
The 2025 marathon in Boston was a shock to many. While the legendary 1976 race saw temperatures near 100°F and nearly half the runners quit, this year’s event started in the upper 30s to low 40s and climbed to about 50°F. Only a tiny fraction, 1. 5 percent of the 28, 854 starters, failed to finish.