1 definition by Denise Schmigelski
Long Slow Distance is just one of the runs needed in the training program for someone intending to run marathons; speed, strength and hills are also important. So if you hear a runner say they have to go to bed early because they are doing LSD in the morning do not call a rehab center.
L S Ds and Speed are for runners!
L S Ds and Speed are for runners!
by Denise Schmigelski October 20, 2006