The Expo '74 was a passenger train operated by Amtrak between Spokane and Seattle, Washington.

In 1973, Amtrak operated two trains between Seattle and Spokane: the daily Empire Builder and the thrice-weekly North Coast Hiawatha.

Ultimately, Amtrak chose to augment its existing services, adding another train to the Great Northern route.

[3] The North Coast Hiawatha began daily operation at the same time, raising the service level between Spokane and Seattle to three daily round-trips, with a viable daylight schedule in both directions:[4]: 48 On its inauguration the train carried six cars, including a dome coach and a dining car.

The next day the North Coast Hiawatha resumed its thrice-weekly operation, dropping the corridor back to ten trains per week.