The Crosstown Trail follows a mix of city sidwalks, stairways, paved paths, and dirt trails, with considerable elevation gain/loss, by design. True ADA-accessible spots along the trail are few and far between.
A short list of good, accessible trails includes most of the Visitacion Valley Greenway (there's one stairway in the middle section you'd have to go around on streets); the east entrance to Glen Canyon Park (section 2, from Elk and Chenery to the Rec Center; only a block or two before the canyon gets steepr); and the Coastal Trail east from Lands End Lookout to the first two overlooks (on a former railroad grade).
Other fairly easy trail sections include Lobos Creek Dunes boardwalk in Section 5. (The boardwalk's plastic lumber tread is bowed and slightly slippery and sometimes the grade is uneven. There's turnaround at the east end but you could turn a wheelchair at the Y that leads to the overlook bench). The Rose Garden portion of Section 4 in Golden Gate Park is a short, level asphalt route but it connects to the 2-mile portion of JFK Blvd. that's closed to cars.
NEAR the Crosstown Trail you can sample nearby semi-accessible paths, including Mansell Drive bike path at top of McLaren Park (MUNI 29 stops nearby); the 2-mile long closed section of JFK Blvd. in Golden Gate Park, and Lake Street's "slow street" (the bike route of Section 5). Much of the Richmond District's grid street network is fairly flat. Farther afield, the Presidio has several well-developed path networks well north of the Crosstown Trail, including the Main Post, Tunnel Tops Park and Crissy Field. Portions of the SF Bay Trail offer other opportunities. So circling back, the general Crosstown corridor has possiblities, but we haven't stitched together an accessible or barrier-free alternate route, nor done a full inventory of facilities, grades, etc..
Candlestick Point State Park in Section 1 has a network of gently rolling 1980s-era asphalt paths, which make for easy walking but are imperfectly maintained, and shoreline erosion has caused some dropoffs, so these are not reliable wheelchair-accessible paths, but might work for some people. Plus in 2022-23 the main park entrance has been blocked by construction and flooded streets; the path from Last Port parking lot is not wheelchair-accessible but decent on foot. (The northern third of the state park has a later network of rough, graceless, and neglected paths). From Last Port you can go south along the Bay Trail along the "Enchanged Garden" (an art piece built as part of the city of Brisbane's stormwater system underfoot) and you get some of the same grand South Bay views.
- Ben Pease, 2023