Taking a cue from the popular television show "The Amazing Race," Race/LA challenges teams of two to crisscross the city solving problems and performing physical tasks, all in hopes of beating opponents to the finish line. In addition to providing prizes and glory to the winners, the competition highlights aspects of Los Angeles culture and history. Starting location given upon registration. 9:30 a.m.-4 p.m. Sat. $190 per team. (310) 360-6950. http://www.racela.com.