For my cross county ride this summer, I need advise on crossing Idaho into Oregon. Im looking at riding 20 thru Yellowstone. Riding A2 into Dubois, 22 to Arco, 20 to Interstate 84, where I would work my way up to Boise (67 and 78) and catch 26 across Oregon.
Is anyone familiar with these roads. Are they reasonable, or would I be better off catching the ACA route up to Missoula and back down? Thanks.
Those roads would work if you are primarily and only seeking speed.
For scenery, I would suggest you take the rail trail from Island Park, ID to Ashton, ID (via Warm River), and work my way via county roads to Rexburg. From there, take ID-33 to Arco, then US-93 to Challis, then ID-75 to Stanley. From there, take ID-21 to Banks, down to Horseshoe Bend, over to Ontario, MT via ID-52 and county roads.
Then take US-26 to the ACA TransAm where it hits it near Bates.
Whatever you do, I hope you enjoy the ride!