We drove our coach about 250 miles, about four hours of driving, from Ephrata to Shelton, Washington.

Here’s a map showing our route, heading west (with the ultimate destination omitted for privacy):

An interactive map, with potential stops pinned:

There was roadworks on the bridge over the Columbia River, with a 9-foot width restriction, so we considered avoiding that and taking a more scenic route, as follows, but it would have added 1.5 hours to the travel, and been more stressful with curvy highway roads, so we stuck with the above route instead of this alternative:

I-90 West and the aforementioned Vantage Bridge:

Narrow, but good enough for trucks, so good enough for us:

Thorp Fruit & Antique Mall:

Rest area:

Wildlife bridge:

Keechelus Lake:

Snoqualmie Pass:

Crossover intersection:

Joining I-5 South:

Fuel stop:

Tacoma Dome:

Route 101 North:

We previously took this exit, but it is more difficult getting through Shelton:

Instead we took this exit, which is much more straightforward:

Downtown Shelton:

We drove our coach 334 miles, about six hours of driving, from Missoula, Montana to Ephrata, Washington.

Here’s a map showing our route, heading west:

This map showing timezones, as we crossed from Mountain to Pacific time (west coast best coast), and the state borders between Montana (right), Idaho (middle), and Washington (left):

An interactive map, with potential stops pinned:

Fuel stop:

I-90 West:

Clark Fork River:

Curves ahead:

Truck stop:

Roadworks:

Rest area closed due to roadworks:

Trucker info:

Welcome to Idaho and Pacific Time Zone:

Roadworks:

Elevation 3,069 feet:

Rest area:

Welcome to Washington:

Spokane:

Train:

Rest area:

Sprague Lake:

Train:

Another closed rest area:

Exit to Quincy:

Field planting sign:

Arriving at our campground:

And our site:

We drove our coach 260 miles, about five hours of driving, from Buffalo to Yellowstone National Park, Wyoming.

Here’s a map showing our route, heading west:

Route with elevations:

An interactive map, with potential stops pinned:

Highway 16, west of Buffalo, Wyoming:

Signs indicated various rock strata, e.g. Granite Gneiss rocks:

Pull-off for a break:

Runaway truck ramp and interesting rocks:

Ten Sleep is a cute little town:

Rest area:

Wildlife:

Cody:

Shoshone River:

Buffalo Bill tunnels:

Buffalo Bill reservoir:

Shoshone River:

Rest area:

More interesting rocks:

Yellowstone National Park east entrance sign:

And entrance station:

Yellowstone Lake:

Fishing Bridge RV Park check-in area:

Our site: