Washington County, Oregon
Mountaindale Sun Resort
Mountaindale Sun Resort is a members-only naturist club spread across 40 wooded acres in Oregon's Tualatin Valley, about 30 miles west of Portland.
About this place
Mountaindale Sun Resort is a members-only naturist club spread across 40 wooded acres in Oregon's Tualatin Valley, about 30 miles west of Portland. It occupies a quiet spot in Washington County where the valley meets the foothills of the Coast Range, offering a mix of open grassy clearings and forested trails with gentle elevation changes. The property includes a heated pool, hot tub, sauna, volleyball and tennis courts, and a clubhouse with kitchen facilities. Accommodations are rustic: tent camping, RV sites, and a handful of small cabins scattered around the grounds. This is a long-established club in the AANR network, drawing mostly families and retired couples who've been regulars for years. Day passes and trial visits are typically available if you reach out ahead of time, making it accessible for first-timers curious about the Pacific Northwest naturist scene. The atmosphere is unpretentious and low-key—think well-maintained co-op rather than resort polish. Cell service can be unreliable in parts of the property. Summer weekends are the busiest season, when families fill the pool area and the volleyball courts see steady action.
Visitor notes
Contributed by ClothingOptional.org Editorial Team
Who visits
Predominantly families and retired couples who've been members for years. Weekends draw multigenerational groups, with kids around the pool and older regulars soaking in the hot tub or playing tennis. The vibe is cooperative and community-focused rather than drop-in tourist traffic. Solo visitors are less common but not unusual during weekday visits.
How to find it
The resort is near North Plains in Washington County, roughly 30 miles west of Portland via US-26. Exact directions are typically provided when you arrange a visit, as the entrance isn't prominently marked from public roads. Parking is on-site. The drive takes you through farmland and light forest as you approach the foothills.
Things to watch out for
This is a members-only club, so contact them in advance to arrange a day pass or trial visit—don't just show up. Cell service is spotty across parts of the property. Summer weekends get crowded; weekdays and shoulder seasons offer more elbow room. Weather in the Tualatin Valley can be damp and cool outside summer months.
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Etiquette & ground rules
You must be a member or pre-arranged guest to visit. No drop-ins. Single men need a female companion for day visits, though single men can apply for membership separately. Photography requires explicit permission from anyone who'd be in the shot, even background. Kids are common here, so behave accordingly—this is a family environment. Towels are required on shared seating. The pool area gets crowded on hot weekends, so claim your spot early. Respect quiet hours after 10 PM, especially near the camping and cabin areas. Alcohol is allowed but keep it moderate. Clothing is required in the parking area and optional everywhere else on the grounds.
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