UPDATED (8th November 2017) see below!
Yesterday (17th Feb 2017) the probable routes of the men and women’s Olympic Road Race were put onto twitter. I’ve mapped out the routes for you to take an in-depth look. Both routes include a flat roll out from central Tokyo followed by a number of laps of a lumpy 15.3km circuit featuring two main climbs, finishing off with a final 12km run to the line to the north.
Update (27th November 2017)
A new route has been shown which is very different to the original one leaked. All I’ve seen is this image for the men’s course with the women’s course starting/finishing in the same locations but with a shorter route:
I’m not sure which direction it’ll take around those loops so I won’t try plotting it as yet until I see a bit more information.