I 90 $west, Lewis and Clark Trail Highway
717.6 mi11 hours 36 mins
| Head northwest on Pioneer Mountains Scenic Byway | 5.3 mi | |
| Continue onto Old Canyon Road | 0.5 mi | |
| Continue onto Pioneer Mountains Scenic Byway | 32.5 mi | |
| Turn right onto Montana Highway 43 (MT 43) | 12.6 mi | |
| Take the ramp on the left | 0.3 mi | |
| Merge left onto Veterans Memorial Highway (I 15 N) | 18.3 mi | |
| Take the ramp on the left towards I 90 West: Missoula | 0.5 mi | |
| Merge left onto I 90 W | 368.4 mi | |
| Keep right towards Ritzville | 73.6 mi | |
| Take the ramp towards I 182 West: Richland | 0.6 mi | |
| Merge left onto Lewis and Clark Trail Highway (I 182 W) | 1.9 mi | |
| Take the ramp towards US 395: Kennewick | 3.8 mi | |
| Continue onto North State Route 395 (US 395) | 1.1 mi | |
| Continue onto Lewis and Clark Trail Highway (US 395) | 21.6 mi | |
| Take the ramp towards SR 14: Plymouth | 0.4 mi | |
| Turn right to stay on Lewis and Clark Trail Highway (WA 14) | 113.3 mi | |
| Continue onto East Steuben Street (WA 14) | 1.6 mi | |
| Continue onto Lewis and Clark Trail Highway (WA 14) | 0.4 mi | |
| Turn left onto Hood River Bridge | 1.0 mi | |
| Take the ramp on the right | 0.2 mi | |
| Merge left onto Columbia River Freeway (I 84 W) | 54.5 mi | |
| Take the ramp on the left towards I 205: Salem | 0.4 mi | |
| Keep right towards I 205 North: Seattle | 0.5 mi | |
| Merge left onto Veterans Memorial Highway (I 205 N) | 1.4 mi | |
| Take the ramp towards Portland Airport | 0.8 mi | |
| Merge left onto Northeast Airport Way | 1.8 mi | |
| Continue straight to stay on Northeast Airport Way | 0.2 mi | |
| Continue onto Departures | 500 feet | |
| You have arrived at your destination, on the right |
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Polaris, Montana - PDX