Bay to Breakers is a mix of pure fun, a few hills, silly costumes, some serious runners and a good dose of history to boot. These days, serious competitors come from 40-plus nations. Bring a camera because the costumes get better every year. If you’d rather watch the action than run with the masses, here are some of the best places to view the pack. But wherever you go, get there early. The starting line is at 300 Howard Street, San Francisco, at 8 a.m. on May 15th.