Transport Mode: Train
- Companies: Amtrak, Metro-North Railroad
 - Duration: Approximately 4 hours and 30 minutes
 - Distance: 300 miles
 - Costs: Around £90 - £120 for a one-way ticket
 - Roads/Routes: Not applicable
 
Pro Tip: Make sure to book your Amtrak ticket in advance for discounts, and consider travelling during off-peak hours to avoid crowds.
For your journey from Washington, DC to Wallingford, CT, taking the train is the most efficient option. You will start your trip at Washington Union Station and take an Amtrak Northeast Regional train. You will transfer at New Haven, CT, then take the Metro-North Railroad to Wallingford. This route not only offers convenience but also stunning views of the eastern seaboard, especially along the coast of Connecticut.