RunFast

Map your run.

Drop in your route, pick the day and your pace. See the heat, humidity and dew point on a map of your run, kilometre by kilometre, timed to when you'll be there. Free, no sign-up.

Or open a race, with its real race-day weather from 2015 to 2024:

Your route stays in your browser. Only points along it are sent to fetch the forecast. Help · Contact us · Privacy · How to read a running forecast · Guides