AVG TRAVEL TIME
It takes 46h 10m to get from Chicago to Seattle by train. Look into Amtrak, they have one of the quickest options available.
The train offering service from Chicago to Seattle Amtrak. Amtrak has been found as the cheapest option available at $300 round-trip.
A train from Chicago to Seattle/Tacoma Intl will travel much more than the 1732.3 mi distance between them. The actual distance depends on the route taken, and stops along the way. Most trains from Chicago to Seattle/Tacoma Intl will get there in 46h 10m.