High Quality Content by WIKIPEDIA articles! The San Francisco Marathon is a series of USATF certified road running events held each July or August in San Francisco, California that include a full marathon, two half marathons, and a 5K. Except for in 1988, the marathon has been held annually since 1977. The current marathon course forms a loop that starts and finishes on the Embarcadero near the Ferry Building. The course runs past many notable landmarks in San Francisco including Fisherman`s Wharf, Aquatic Park, the Golden Gate Bridge, Golden Gate Park, and AT&T Park. The course briefly enters Marin County at the northern end of the Golden Gate Bridge.