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.
2days
From Billings and Seattle it is 819 mi (about 11 hours 37 mins).
13 Hours
Around 48 hours nonstop.
Approximately 19 hours.
9 hours
About 40-45 hours with out stops.
3 hours
In average it'll take 15 hours.