SAN FRANCISCO — Leather Week begins Sept. 20 with LeatherWalk and Leather Pride Fest in SoMa. Sunday, Sept. 27 is shaping up to be one of the city's most complicated travel days of the fall. Folsom Street Fair will fill part of SoMa, the Giants host the Dodgers at Oracle Park at lunchtime, and Portola Music Festival opens its second day at Pier 80 shortly afterward.
Those three crowds will overlap on the eastern side of San Francisco, while the Cole Valley Street Fair creates a separate neighborhood closure and Muni-reroute pocket on the west side. The events are not all next door to one another, but their schedules are close enough that driving, parking and cross-city travel can interact.
A separate weekend transit change also affects the southwest side: M Ocean View trains stop short of Balboa Park Sept. 26–27, with riders transferring to a shuttle bus at Broad Street and Plymouth Avenue. Riders crossing the city for Sunday events should build that transfer into M-line trips.
What is happening in San Francisco on Sept. 27?
| Event | Area | Time | Main travel issue |
|---|---|---|---|
| Folsom Street Fair | SoMa | 11 a.m.–6 p.m. | Major street-fair footprint and SoMa closures |
| Giants vs. Dodgers | Oracle Park | 12:05 p.m. | Ballpark traffic and parking demand |
| Portola Music Festival | Pier 80 | Doors 1 p.m. | No festival parking; BART shuttle and transit strongly favored |
| Cole Valley Fair | Cole Valley | 10 a.m.–5 p.m. | Neighborhood street-fair traffic |
How big is Folsom Street Fair?
The organizer lists the 2026 Folsom Street Fair for 11 a.m. to 6 p.m. Sunday, Sept. 27. Its 2026 sponsorship materials project 275,000-plus attendees, which makes the fair the largest single crowd in this Sunday mix.
Going to the fair? SF News Today now has a dedicated Folsom Street Fair guide with the event footprint, Saturday setup closures, Muni reroutes, admission rules and practical travel information.
SFMTA has now published its detailed fair advisory. Folsom Street and surrounding cross streets close from 5 p.m. Saturday until 5 a.m. Monday, while reroutes affecting the 9 San Bruno, 12 Folsom/Pacific, 19 Polk and 27 Bryant begin at 4 p.m. Saturday; the 90 San Bruno Owl also changes during the overnight period.
Can you park at Portola?
No festival parking is available at Pier 80. Portola's current transportation page tells attendees not to drive to the event. The main entrance is at 900 Marin Street.
For BART riders, Portola says a free shuttle will run between 24th Street Mission BART and Pier 80 from 12:30 p.m. to 11:30 p.m.. The San Francisco loading zone is at Valencia and 24th streets; the Pier 80 loading zone is near Illinois and 24th streets.
Going to Portola? SF News Today now has a dedicated Portola 2026 transportation guide covering the BART shuttle, Muni, parking, closures, set times and a conflict between the festival and SFMTA over the late-night T Third boarding point.
That shuttle matters on Sept. 27 because it moves festival traffic away from the already busy Oracle Park/SoMa corridor rather than inviting another large parking hunt near Pier 80.
When is Giants-Dodgers at Oracle Park?
The Giants list the Sept. 27 game against the Los Angeles Dodgers for 12:05 p.m. as part of Fan Appreciation Weekend and a Mike Krukow celebration.
A lunchtime first pitch means the biggest inbound baseball crowd will arrive while Folsom Street Fair is opening and before Portola's 1 p.m. doors. The postgame period can then overlap with the afternoon peaks for both events.
Should you drive across SoMa or Mission Bay that Sunday?
If you have a choice, public transit will be more predictable than hunting for curb space. That is especially true for Portola, where the festival itself says not to drive.
Drivers who are not attending an event should still plan for slower local movement through SoMa, Mission Bay, Dogpatch and the southeast waterfront. A closure that is manageable on a normal Sunday can become more disruptive when several large crowds are arriving and leaving at different times.
What else is happening downtown?
A separate free event starts at noon in Mid-Market: Warfield Commons is holding its public grand opening at 988 Market Street from noon to 5 p.m., with performances, food vendors, tenant-led tours and family activities. It is smaller than Folsom, the Giants game or Portola, but it adds another fixed-time downtown destination to the Sept. 27 travel picture.
What else is happening in Golden Gate Park?
Sept. 27 is also busy on the west side. German Day runs 11 a.m.–4 p.m. around the Bandshell and Music Concourse, while the Bodhi Mid-Autumn Festival runs 10 a.m.–5 p.m. at the County Fair Building. The first Golden Gate Park Nature Festival also runs 10 a.m.–2 p.m. at the California Academy of Sciences entrance. Those events are much smaller than Folsom or Portola, but together they add parking and pedestrian demand around Golden Gate Park.
If you are planning the weekend now, the clearest citywide advice is to avoid relying on curb parking near major events, check the final Muni stop for your route, and allow extra time for any trip that crosses SoMa, Mission Bay, the southeast waterfront or the Music Concourse area on Sunday afternoon.