Since you are online, finding this answer is very easy. Google Maps, Yahoo Maps, Mapquest---all sites that have a "get directions" option.
I went to google maps and typed in Dallas Tx to portland or and it says 2,127 miles 1 day and 7 hours.
http://maps.google.com/maps?hl=en&q=dallas+tx&um=1&ie=UTF-8&sa=X&oi=geocode_result&resnum=1&ct=image
34 hours
It is 2,269.70 miles according to MapQuest.
You will spend about 31 hours making that drive.
It takes about 3 hours and 24 to drive to portland Oregon from sunriver.
It is 1,628 miles according to Google Maps.
an hour and a half
6 hours.
3 hours
It is 2,341 miles and 39 hours of driving time according to Google Maps.
The length of time it takes to fly from Houston in Texas to Portland in Maine is 5 hours and 30 minutes. It would take 28 hours to drive between the two locations.
37 minutes, approximately
A one hour drive south of Portland will take you to Salem, Oregon-- the third largest city in Oregon.