Is there a am.track train running east outa Spokane to Williston nd

There WAS an eastbound train, the empire builder. Suggest you check if the empire builder normally gets to your destination, but the empire builder is suspended right now because of the derailment

There is an Amtrak train that heads east, not sure if to Williston. Amtrak business hours are 10pm to 6am, or you can download the Amtrak app...