The driving distance between Helena, MT and Spokane, WA is approximately 310 miles. The driving time would be approximately 5 hours 15 minutes if you were to travel non-stop in good driving conditions. (The driving time does not take into consideration conditions which may extend trip time such as weather, road work and rush hour traffic in urban areas.)
About 293 miles or 4 hours and 35 minutes driving
The distance between Spokane, WA and Missoula, MT is approximately 160 miles driving.
The driving distance from Spokane Washington to Reno Nevada is 794 miles via I-84 E per Map Quest. The driving time per Map Quest is 11 hours and 53 minutes.
The driving distance from Winthrop, WA, USA to Spokane, WA, USA is 185mi / 297.4km
The driving distance from Lyons, Oregon to Spokane, Washington is about 422 miles / 679 km
The driving distance from Spokane, Washington to Radium, Minnesota is 1,257 miles / 2023 km
The driving distance from Spokane, WA, USA to Vancouver, BC, Canada is 414.61mi / 667.25km
The driving distance from Helena, Montana to Elko, Nevada is 599 miles via I-15 S per MapQuest. The driving time per MapQuest is 8 hours and 24 minutes.
The driving distance from Spokane, WA, USA to Belize City, Belize is 3610.57mi / 5810.65km
The driving distance from Spokane, WA, USA to Junction City, WA, USA is 367mi / 590km
The driving distance from Helena, Montana to Glacier National Park is 247 miles via US-89 N per MapQuest. The driving time per MapQuest is 4 hours and 2 minutes.
280 miles taking I-90 EAST. You are looking at about 4 hours driving.