For the 2026 San Francisco Marathon weekend (July 25-26), the full and first half marathons are sold out, but the 2nd Half Marathon is still open for registration at $303.74, and a waitlist is available for the main events. Expect significant road closures starting at 4:30 a.m. on July 26 around the Embarcadero, Golden Gate Bridge access, and various city districts.

The 2026 San Francisco Marathon weekend, set for July 25-26, is largely sold out for its marquee full and first half marathon events. But for those still eager to hit the pavement, or planning to navigate the city's streets as a spectator, good news remains: the 2nd Half Marathon retains open registrations, and a waitlist offers a shot at the coveted sold-out races. Significant road closures are expected, making planning essential for all.

While the full marathon and the first half marathon quickly reached capacity, would-be runners still have a chance. The official SF Marathon website maintains an active waitlist, and spots frequently open up due to participant deferrals or changes in plans. The mantra from organizers is clear: "When they do, the right wait list is the best way to secure yours."

Meanwhile, the 2nd Half Marathon, also known as "The City Half," offers a clear entry point. This 13.1-mile race kicks off on Sunday, July 26, at 8:30 a.m. Its start line is located on MLK Jr. Drive at Golden Gate Park, winding its way to a finish at Embarcadero at Howard Street. With a 3.5-hour time limit, it offers a scenic route through San Francisco's neighborhoods. The registration fee for the 2nd Half Marathon is $303.74 (including processing fees).

For spectators or those needing to get around, be prepared for extensive traffic disruptions. Road closures begin as early as 4:30 a.m. on Sunday, July 26, impacting major arteries in and around the Embarcadero, Golden Gate Bridge access points, the Presidio, Richmond, Sunset, Mission, and Marina districts. While the Golden Gate Bridge itself will remain open to vehicle traffic in both directions, access points will be affected. Official marathon resources advise checking their traffic advisory section closer to the event for detailed maps and times.

Insider Tip: If you're hoping for a last-minute entry into one of the sold-out races, get onto the official waitlist now. For the 2nd Half Marathon, consider taking public transit to the Golden Gate Park start line to avoid early morning road closures.

If I only had two hours: I'd sign up for the 2nd Half Marathon if I was race-ready; otherwise, I'd plan a strategic spot along the Emabrcadero to watch the finish, ensuring I check the detailed road closures and Muni reroutes beforehand.