Ainsworth State Park, Oregon

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Ainsworth State Park

Whether your camping style is RV, car, or backpack, you’ll enjoy experiencing Ainsworth State Park near Cascade Locks in Oregon’s glorious Columbia River Gorge—and don’t forget your hiking boots.

  • Located 17 miles east of Troutdale, Oregon off Interstate 84.
  • Full hookups and primitive tent sites allow campers to enjoy the hiking, biking, sightseeing, and interpretive programs nearby.
  • Restrooms, showers, firewood, and a creek running through the park’s east end are some of Ainsworth’s amenities.


Situated right on the Columbia River Gorge at the east end of Oregon State Highway 30, Ainsworth State Park provides easy access to a variety of Oregon attractions, both natural and historic. The park’s proximity to Portland, Hood River, the Columbia, and famed high waterfalls (including Multnomah and Bridal Veil) make Ainsworth a natural choice for campers and hikers visiting the Gorge.

Location & Information

Ainsworth State Park is located 17 miles east of Troutdale, Oregon. Take Interstate 84 east from Portland to Exit 35 and follow the signs to the park. Like many Oregon state parks, Ainsworth has full hookups, restrooms, and showers.

The park’s season runs mid-March through October; campsites are first come, first served and park fees apply on a per-vehicle basis. For information and to confirm park status, call 1 (800) 551-6949 or (503) 695-2301.


  • Camping: Ainsworth has a total 45 full-service campsites plus 6 more primitive, walk-in tent sites. RV hookups and refuse site are available.
  • Hiking: A walking path and several hiking trailheads lie near Ainsworth. The Nesmith Point Trail is a 10-mile hiking loop with a 3,800-foot elevation gain, providing fantastic views of the St. Peter’s Dome rock formation, Mt. Adams, Mt. St. Helens, and Beacon Rock.
  • Interpretive programs: Ainsworth has an amphitheater where interpretive programs are presented.
  • Biking: Bicyclists love the Historic Columbia River State Trail just 10 miles east near Cascade Locks. Closed to motorized traffic, this trail offers lovely vistas of the Columbia Gorge and the Mosier Twin Tunnels.

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