The route from Washtucna to Boise covers 450 kilometers, taking you south through the Tri-Cities and into the high desert of Eastern Oregon and Idaho. You will primarily use US-395 and I-84 East. The drive typically takes 4 hours and 30 minutes. You will cross the Snake River and traverse the expansive plains of the Columbia Basin and the Treasure Valley. This route is a vital connection for those traveling between Central Washington and the Idaho capital.
Total Distance: 450 km driving distance; 380 km straight-line air distance.
I-84 through the Blue Mountains can be steep; ensure your vehicle is in good condition.
April to June or September to October for mild temperatures in the Treasure Valley.