If big events is your thing, look no further than San Jose Rock n’ Roll Half Marathon weekend. Aside from offering 5k, 10k, and half marathon options, the race also hosts a kids’ race the day before the half marathon -- typically on Saturday -- that gives children an opportunity to run around Cesar Chavez Plaza. RNRSJ is as well-organized as they come, and children can earn a t-shirt, bib, and medal for participating in the kids’ race.