40021 MSB STM FAST, Chennai Beach Jn to St Thomas Mount runs M Tu W Th F Sa, has classes GN. Pantry is not available. Fare does not include food cost. Total travel time of the train is 26 min. Average speed is 39 km/hr. Advance reservation period (ARP) is 120 days. The train is owned by Southern Railway (SR). Its rake is shared with . Suburban fare is applicable. It is a EMU train. It is a Broad Gauge train.