No, you cannot walk directly from the historic center of Venice to the mainland (Mestre) via a pedestrian-only path. The only physical connection is the Ponte della Libertà (Bridge of Liberty), which is roughly 2.4 miles (3.8 km) long. While this bridge carries cars, buses, and trains, it does not have a dedicated, safe sidewalk for the entire length that is suitable for casual walking with luggage. There is a very narrow service path used by maintenance workers, but it is loud, exposed to wind and exhaust, and generally considered dangerous and unpleasant for pedestrians. In 2026, the best way to cross is by train (a 10-minute ride for about €1.50) or by bus/tram. For those determined to arrive by "manpower," the only viable "walk" is within the city itself once you have arrived at the Piazzale Roma or Santa Lucia station. If you are staying in Mestre to save money, utilizing the frequent and inexpensive rail links is the peer-to-peer recommendation, as attempting to walk across the bridge is a logistical nightmare that will leave you exhausted before you even reach the first canal.