If you’re a local baseball fan and you haven’t yet run the Giant Race, you’re missing out, and not just because race entry includes a bobblehead (this year: sparkle-eyed Sergio Romo decked out in running gear) and a shiny medal (also this year: an homage to the World Series ring … with glitter, because WE ARE THE CHAMPIONS). The late summer race, which benefits Project Open Hand and offers nearly pancake-flat 5K, 10K, and half-marathon distances, begins just outside AT&T Park but ends on the field. Sure, certain parts of the sacred grass are roped off, but the bulk of the diamond is open for post-race stretching, hydration, and field-of-dreams fantasies galore. Die-hards take special note: There are companion Giant Races in San Jose and Scottsdale, too. No AT&T Park finish, obviously, but think of the superfan bragging rights!