On a flat road, no wind, approximately how many watts to go 20 MPH? I have found it to be reasonably accurate compared to power meter result on q climb for example. Thats odd, at around 15-20 MPH each MPH gained takes around +15% more power. Training? As far as trying to recreate that with MPH, I don't think it's possible. Racing?There are two "naive" pacing strategies (let's think about a 40K time trial, just for sake of argument).