racewalking(redirected from 50 km walk)
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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 from first contact with the ground until that leg is directly below the upper body.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.