Originally Posted by Dan333SP

I'm sure there are differing power demands in a P1/2 race versus a similar level race in Zwift because of the drafting and such, I was stating that for me, as someone who is usually just a pack surfer in 3/4 races, my HR and power are remarkably similar between a Zwift race and a real race. There are surges on hills and out of corners, coasting on downhills, etc. Again, it's not exactly the same for all racers, I'm sure, but for me I've found that it's as close to a real race in terms of training as I can get. Have you done any Zwift racing yourself, or is this based on having looked at other people's data?