Share this: Facebook Twitter LinkedIn SFMTA.com/16435 23 to S.F. Zoo 28, 57 min Predictions valid as of 2:58:26 AM 4/4/2025 min Arriving Prediction Unavailable Stop closed — no service Predictions valid as of Predictions unavailable for any route as of Route & Arrival Details 23 Monterey 6 a.m. to 10 p.m. daily Destination Predicted Arrivals S.F. Zoo 28, 57 min Live Map