Share this: Facebook Twitter LinkedIn SFMTA.com/13173 31 to Caltrain 1, 19 min 31 Balboa Caltrain arrives in 1 minute. Predictions valid as of 7:07:48 PM 3/31/2025 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 1, 19 min Live Map