1 definition by Bombadier General
Stands for long slow distance. What runners do to build endurance or train for a long distance event, like a marathon.
Runner #1: Man, track season finally ended, and all my tough interval workouts are over.
Runner #2: So you're done with speed?
Runner #1: Yup. And I'm ready for LSD.
Runner #2: So you're done with speed?
Runner #1: Yup. And I'm ready for LSD.
by Bombadier General June 10, 2008