Share this: Facebook Twitter LinkedIn www.sfmta.com/13053 Prediction Unavailable min Arriving Prediction Unavailable Stop closed — no service Predictions valid as of Predictions unavailable for any route as of Bay to Breakers this Sunday, 5/18. Visit SFMTA.com/B2B for service details Route & Arrival Details 31 Balboa 5 a.m. to 10 p.m. daily 31AX Balboa A Express Live Map