RV Parks & Campgrounds

Three Island Crossing State Park - Trailside Campground State Parks

4.5 Stars 4.5 - 12 Reviews  $$
(208) 366-2394
Glenns Ferry, Idaho


All year

Total: 40, Max RV Length: 60 ft

Water, Electric, Pets allowed, Tents, Picnic Tables, Restroom, Dump Station, Showers, Fishing, Campfire, Boat Launch


June 22, 2019 - reviewed by C And J
3.0 Stars   $40
Not A Great Park
We stayed on lower Trailside, it is shady and quiet but the grass is mostly fox tails. No water access or view. Apparently we have to leave the park and drive to the boat docs to be able to get into the water. Day access area has muddy water access and it's a hike to get there. Not impressed, feel like it was misrepresented online. :(

May 2, 2019 - reviewed by Leo
5.0 Stars   
Lovely Park
My husband and l stayed one night. Good space between sites. The sites were in among the trees and well kept lawn. Nice senior discount for Monday-Thursday. Would defiantly come back.

September 11, 2018 - reviewed by Tamperjoe
5.0 Stars   
Skip The Local Rv Parks And Come Here!
Skip the local RV parks and come here. This park is awesome. We drove straight past the local RV site based on a disappointing drive by review and came here. Glad we did. Wide spots, lots of lawn and great views. We are in a big rig and didn’t have any trouble finding a spot where we could fit. Although the host was concerned we wouldn’t find a site to fit in we had no problem.

July 2, 2018 - reviewed by Charlie
3.0 Stars   
pretty but not much to do
Expensive but pretty and clean campsite. Good for an overnight stop but not much to do here. The Snake River runs past the camp but there is no access that I could find. Not really recommended for longer stays.

July 1, 2018 - reviewed by Ila
3.0 Stars   
It really is a pretty State Park. But being from Oregon we are very spoiled with the quality of our state parks and the cost! And that cost is not just for Oregonians but for travelers as well. We were shocked that we had to pay an extra fee because we had a tow vehicle. The price with the tow vehicle came to close to $40 a night and we have only 30 amp service. It’s quite hot here – 88° – and we would love to run both of our air-conditioners in our motorhome.

May 18, 2018 - reviewed by Jeff and Carolin
5.0 Stars   
Lovely setting overlooking the Snake River. Lots of birds. Saw jack rabbits. Sites are nicely spaced, with trees around but also lots of open ground. Would stay here again.

April 24, 2018 - reviewed by Lookout
5.0 Stars   
Absolutely Perfect
Clean, shady, quiet, and tidy! Lots of birds, trails and museum. Showers and bathrooms are great, sites are all-spaced. Many companion sites for those traveling together. Cell signal strong if you want to stay connected. There are cute cabins here also. Only thing missing was recycling bin!

August 18, 2017 - reviewed by Jorg
5.0 Stars   
Beautiful park. Clean hot showers. Large grassey shaded sites. Fee approx $33+ change. On site museum is a bonus. Stayed 3 days. Definitely recommend.

July 28, 2017 - reviewed by Stan
5.0 Stars   
A great place. Shade, grass. Great hosts. We spent 1 night. Will definitely return for a longer stay.

April 27, 2017 - reviewed by Ecc
5.0 Stars   
Oregon Trail
This is a wonderful campground right on the Oregon Trail with a lot of history and museum in the park great for families and groups as well as couples

September 28, 2016 - reviewed by Michele Brosnahan
5.0 Stars   
My husband just love this campsite. We're from So-Cal. My husband is over 62 years old we came during the week and we received the senior discount. All sites have water and electric. We paid $19.72 per night with his senior discount. It's well worth it. If I had to complain about one thing it would be the flies. There are lots and lots flies. So bring a screened in patio.

August 9, 2015 - reviewed by Happy Camper
5.0 Stars   
One of our favorites for sure. Really big spots, lots of trees for shade, great for a walk, kid friendly although no swings etc. Need to bring your own bikes and toys for kids. Nice and quite. We go at least 2-3 times a year.

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