MapQuest estimates the driving time as 18 hours and 6 minutes.
It is 172.88 miles. it takes 3 hours to drive from Portland OR to Seattle. :)
4 days
It takes about 11 to 12 hours to get to Reno from Seattle.
A long time
The shortest time is 17 hours and 37 minutes.
2days
From Billings and Seattle it is 819 mi (about 11 hours 37 mins).
13 Hours
9 hours
Around 48 hours nonstop.
Approximately 19 hours.
About 40-45 hours with out stops.