1. Direct High-Speed Train (Frecciarossa): Around 13-14 hours. This is the fastest option and involves taking a high-speed train from Brussels to Milan (about 7 hours), and then connecting to a Frecciarossa train to Venice (around 3-4 hours).
2. Daytime Regional Trains: Around 18-20 hours. This option involves taking a series of regional trains, with several transfers along the way. The journey may involve multiple changes of trains and longer waiting times at connecting stations.
3. Overnight Trains: Around 14-16 hours. There are also overnight trains that operate between Brussels and Venice. These trains typically depart in the evening and arrive in the morning. They offer sleeping cabins or compartments, allowing you to rest during the journey.
It's important to note that these travel times are approximate and may vary depending on the specific train services available on the dates you are traveling. Additionally, factors such as delays, disruptions, or additional stops can also impact the actual travel duration. It's always a good idea to check the latest schedules and consult with the relevant train operating companies to get the most up-to-date information on journey times.