What’s the best temperature for running a marathon?

How temperature affects marathon performance

Heat wave hitting Tokyo will affect distance events

Athletes forced to face challenging temperatures on the track

Running the numbers: Will 2017 be the next “Hot Boston” or “Fast Boston”

With temperatures over 20 C and winds blowing at 35km/hr from the west, the weather is going to be a factor in Boston. Will the heat crush runners, or will the wind carry them to the fastest Boston ever?