The Portrero Mission Loop starts on the east side of Potrero Del Sol Skate Park. Cross through the park, exit onto Portrero Ave, cross at the light and walk back to the first entry of Rolph Playground. Exit onto Hampshire and go towards Cesar Chavez. Use the overpath to cross and continue east on the south side, following the bike path.

At the end of the freeway maze (called 'hairball'), cross Cesar Chavez (safely at Kansas St) and walk up Vermont St, then continue on 26th St. Turn left at Wisconsin St, left on Caronline St, and cross through Starr King Open Space on dirt paths. At the bottom of Starr King, turn right and walk up De Haro St.

At the top of the hill on De Haro, turn left into 22nd St and walk down to Vermont St. Take the footbridge to cross the US-101 freeway. Continue left on Vermont on the east side of the freeway, until you hit 25th St and the starting point at the skatepark.