race walking

noun
1.
the sport of rapid, continuous-foot-contact walking, requiring that the trailing foot not be lifted until the other meets the ground and the knee locks momentarily, and executed in an upright, rhythmic stride with the arms usually held bent and high and pumped close to the body.
Compare power walking.
Also called walking, the walk, heel-and-toe racing.
Related forms
race walker, noun

race-walk

[reys-wawk] /ˈreɪsˌwɔk/
verb (used without object)
1.
to participate in race walking.
Origin
1970-75
race walking in Medicine

race walking n.
The sport of walking for speed, the rules of which require the racer to maintain continual foot contact with the ground and to keep the supporting leg straight at the knee when that leg is directly below the body. Also called PowerWalking.