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Stone Tracer is the term used to describe one of the practitioners of parkour in the decade of 2010 and before. The first word "stone" references the stone age. The second word of the term "tracer" references the act of tracing by a traceur, one who practices the sport of parkour.

The term was created along with "Caverunner" with the belief that current freerunning/parkour practices and competitions will eventually evolve into a widespread cultural phenomenon that will hold the same status as the various sports practiced by youth such as skateboarding.

First coined sometime in the mid 2000's along with the term "Caverunner", the term is believed to originate inside the United States. The exact origins are not known, but the term has become widely used within various parkour/freerunning hotspots around the state of Texas.
"Back in the day we stone tracers didn't have all the anti-parkour laws you kids got now."
by Dznil October 25, 2009