Racetracks rhymes with:
amtrak's, backtracks, soundtracks, amtrak's, backtracks, borax, mesothorax, metathorax, soundtracks, wisecracks
Racetracks sounds like:
racetrack, racketeers, reactor's, reactors, register's, registers, registrars, registries, resistors, restores, roasters, rochester's, roister's, roosters, rosters, royster's