First of all I think the Olympics have a lot of sports which is not even recognised and for me if I have a chance to include any activity I like in the Olympics it's definitely going to be racing walking.
How is walk racing done? It's done by usually walking, but you'll have to increase your pace on the walk so that it will actually look like you're walking, but actually you're doing a walk race.
This is an activity that is very healthy I do it every morning, however since I don't have much energy to burn by running let's say 10 kilometers I race walk,
To understand race walking again, it is done by actually walking however you will need to increase your pace by walking very fast, so it'll look like you're exactly running, and however reaches the finishing line first, wins the race walk