While technically possible, Lake Como is not a recommended day trip from Florence due to the significant travel time involved. The distance between the two is roughly 175 miles (285 km). The fastest high-speed train from Florence to Milan takes about 1 hour and 40 minutes, followed by a 40-to-60-minute regional train to the town of Como. When you factor in transfers and the time to reach the station, you are looking at a minimum of 6 to 7 hours of round-trip travel. Once you arrive at Lake Como, you still need time to navigate the lake via ferry to reach popular spots like Bellagio or Varenna, which can take another hour. If you attempt this as a day trip, you would likely spend more time on trains and ferries than actually enjoying the scenery. A better alternative from Florence is a day trip to Lake Garda or the nearby Tuscan countryside; Lake Como is much better suited as a 2-to-3-day excursion with an overnight stay in Milan or Como.