Outdoor sport climbing routes typically have bolts drilled into the rock
and you must carry quickdraws that you use to clip in. Initially, when you
sport climb, you do something called “mock lead climbing.” That requires
both the rope you clip in with and a top rope. This technique lets you
practice clipping in to bolts without having to fall as far when you make
a mistake. When you progress to lead climbing, you no longer rely on a top
rope attached to a top anchor to hold a fall. Instead you rely on each
bolt you clip into as you ascend. The net effect is that you fall farther
if you slip on a lead climb.
Learn more about Sport Climbing
here.