Share this: Facebook Twitter LinkedIn SFMTA.com/13048 31 to Downtown 4, 24 min 31 Balboa arrives in 4 minutes. Predictions valid as of 6:04:59 PM 1/12/2025 min Arriving Prediction Unavailable Stop closed — no service Predictions valid as of Predictions unavailable for any route as of Route & Arrival Details 31 Balboa 5 a.m. to 10 p.m. daily Destination Predicted Arrivals Caltrain Prediction Unavailable Downtown 4, 24 min Masonic + Turk Prediction Unavailable 31AX Balboa A Express (Suspended) Live Map