That depends on how fast you drive and what route you take.
Using GoogleMaps as my guide, by driving there it appears to be right at 589 mi - about 8 hours 36 mins.
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
In average it'll take 15 hours.
About 40-45 hours with out stops.
Around 48 hours nonstop.
Approximately 19 hours.
3 hours
13 Hours