2Slow4Boston Marathon
Race Day Weather
Warming trend, moderate humidity
Runners will face temperatures rising from 58°F at the start to a peak of 75°F. Winds will be light at 7 mph from the SW, with gusts up to 21 mph. With humidity averaging 67%, it's advisable for runners to pace conservatively in the early miles to adjust for warmer conditions later in the race.
Pace Calculator
Get forecast alerts for 2Slow4Boston Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
2Slow4Boston is an annual marathon, half marathon, and (starting 2027) 50K held in Greer, South Carolina, built around a loop course of a mile-plus repeated multiple times. The 2027 edition introduces a 12-hour time limit for all distances. The race began around 2014 under the name 'Too Slow for Boston' and has run every spring since, reaching its 14th marathon edition in 2027.
