How long does it take to get from union station to Chicago by train?

Traveling from Union Station in Washington, D.C. to Chicago by train typically takes around 17 to 18 hours, depending on the specific train service and schedule. Amtrak's Cardinal and Capitol Limited routes provide this connection, and travel times may vary due to factors like delays or route changes. It's advisable to check the Amtrak website for the most current schedules and travel times.