Fee: Discover Pass required: $10 day / $45 annual. Other fees: trailer dump $5/use; overnight unattended vehicle $10/night; other entrance fees vary. Reservations: Washington State Parks reservation system
About this park
Lewis & Clark Trail State Park is an oasis-like forested park on the Touchet River, surrounded by arid grassland. Unusual vegetation and geology, plus a rich history, make it worth a stop on the way through southeast Washington. The park is open in summer from 6:30 a.m. to dusk and closes Nov. 1 through March 31.
Lewis and Clark Trail State Park FAQ
Where is Lewis and Clark Trail State Park located?
Lewis and Clark Trail State Park is in Dayton, Washington, at 36149 Highway 12. GPS coordinates: 46.28842, -118.07225. Get directions.
Is there an entrance fee at Lewis and Clark Trail State Park?
Discover Pass required: $10 day / $45 annual. Other fees: trailer dump $5/use; overnight unattended vehicle $10/night; other entrance fees vary. Reservations: Washington State Parks reservation system. Fees can change by season, so confirm with the park before you go.
How do I contact Lewis and Clark Trail State Park?
You can call (509) 337-6457. The park office can confirm RV site availability, hookups, length limits and current conditions.
Are there RV campgrounds near Lewis and Clark Trail State Park?
Yes. The closest RV-friendly campgrounds listed on ParkedRV are:
- Fishhook Park (33.2 mi, reservable)
- Charbonneau Park and Campground (37.0 mi, reservable)
- Hood Park (45.2 mi, reservable)
How current is this information about Lewis and Clark Trail State Park?
This listing was last updated on October 8, 2026. If something is out of date, let us know and we'll fix it.