1 definition by Bombadier General

Top Definition
LSD
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.
by Bombadier General June 09, 2008

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×