Share this: Facebook Twitter LinkedIn SFMTA.com/14473 31 to Caltrain 5, 22 min Predictions valid as of 9:27:38 PM 6/11/2025 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 5, 22 min Downtown Prediction Unavailable Live Map