US 12 Lolo MT to Kooskia Id

It is a good highway with good scenery. When you get into Idaho, it follows the river with many campgrounds. Don't know what months you are planning on but if spring or autumn you could have snow.

We went through there in 19 driving our CC duallie pulling a 30' 5th wheel. It's a beautiful drive. We stayed at the Pink House BLM campground right on the river just west of Orofino. It's a very nice campground with amenities

Update: Sorry I looked at the map again and Pink house Campground is over 30 mi west of Kooskia

Good road but you won't set any speed records. Follows the river so lot of curves. Lot of turnouts. The road was used a few years ago to move some million pound plus loads from Lewiston into the Alberta oil fields, so it was revamped to accommodate. We overnighted in Lolo (going west) at https://www.lolocampndance.com/ neat mom and pop place right on river.

If I was to do it again I would stay around Lewiston, our granddaughter was about ready to commit mutiny before I got to the COE park near Burbank, WA.

Lolo Pass is steep climb about five miles long. The west side isn't too bad after the first couple miles.

We were in a 35' V10 gasser with a toad.

Where to in Oregon?

There is a steep down hill run westbound from Lolo Pass. Use lower gears and watch using brakes too much causing over heating. Good highway, numerous pull offs.

Thanks for this information. I'm not sure how far west we will go yet. We ran the lengthy of US 2 four years ago but our destinations were Glacier National and US 101 at Olympia around the loop then south.. This trip we want to check out the Dakota's, Montana and Idaho more closely. So at this time I'm not sure how far west We will go. Fortunately we have plenty of time and if it gets to close autumn we'll head south.

Good road and lots of campgrounds. You will not have any issue with your rig, use lower gears on the west side. Lots of Lewis and Clark sites. Be sure to stop and see the Travelers Rest site in Lolo MT.

It's a great route. We've taken it many times when heading west from the Rockies in our 30' class A. There is a hill going west over the Lolo Pass but it's no big deal and there's not much traffic to be a problem. We have camped at Powell Campground numerous times and then headed down along the river on a easy pace at 45 mph and in the morning there's very little traffic either way as you're 1 1/2 hours from Lolo and even more from the traffic heading east.

From Powell along the 12 into Oregon we then stay at the conjunction of I-84 and the 97 at Mary Hill Campground right on the Columbia River.

Great part of our trip.

US 12 curves northwest at Walla Walla, WA and is part of I 82 to just north of Yakima. Conitues over White Pas and onto Grays Harbor WA. It does not go into OR.

You should be fine on that stretch. I've ridden it numerous times, usually on the motorcycle, but a semi could travel that road so you shouldn't have any trouble at all. It is a beautiful area, enjoy.

A favorite stretch of road of ours. Did it with a 40' FW. No issues at all. Enjoy. Betsy.