To my way of seeing things, race is manifest more in body morphology than anything else. Tall, angular and with lots of surface area for hot climates, squat and much less surface for cold climates, and in-between for temperate. Of course since human beings migrate and interbreed, you can get quite a bit of overlap.
By country (not race or any other factor) the Dutch are the tallest people on earth and the Japanese are the shortest.
Nope...what about the pygmies? :-)