Boulder River Trail is a 8.8 mile heavily trafficked out and back trail located near Arlington, Washington that features a waterfall and is rated as moderate. The trail offers a number of activity options and is best used from March until October. Dogs are also able to use this trail but must be kept on leash.

Distance: 8.8 miles Elevation Gain: 1,646 feet Route Type: Out & Back

dogs on leash

kid friendly

hiking

nature trips

bird watching

running

beach

forest

partially paved

river

views

waterfall

wild flowers

wildlife

blowdown

muddy

scramble

The waterfall is unnamed, which is surprising considering its height and beauty. The trail up to the falls is an easy hike, but once at the falls, if you want to get down to the base of the falls, there is a bit of a scramble down (and up).

hiking
blowdown
muddy
off trail
1 day ago

hiking
muddy
3 days ago

muddy
10 days ago

Road up to the trail is riddled with pot holes, it is doable in most cars, but it is rough. Trail itself is beautiful and there are 2 waterfalls along the way. The first is about 1.5 miles in, and the next is about 3 miles in. The trail after the 2nd waterfall is nice, however, it gets exceedingly muddy and to me, is very worth it.

hiking
muddy
washed out
11 days ago

Beautiful trail, and incredible waterfall only 1.25 miles in! Agree with everyone about the road being littered with large potholes. I made it in an impreza and I saw a Mazda 2 make it, but if your car is low, you'll bottom out more than once. Arrived at the trailhead around 9:40 and found a spot no problem, but there isn't a lot of space and when we left around 2 it was pretty jammed. Rarely saw anyone the first half of the day, but a fair amount at the end. Trail definitely needs maintenance, lots of downed logs that can be a challenge to navigate, and the mud is real so be prepared. The whole trail is beautiful though, and doesn't have much elevation change. Nice area for lunch at the end by the river, but not loads of space.

hiking
muddy
washed out
12 days ago

hiking
muddy
12 days ago

recommend an SUV to get to the trail head. trail needs some maintenance but getting around the fallen trees was do able. amazing views and fun bridges along the way. recommend this for a summer hike as it was very slippery and the trail had alot of mudd puddles to go around.

13 days ago

The road is heavily potholed, some rather deep so an suv or truck would be best here. The trail is wet and muddy in sections but overall not bad. This hike is fairly simple, not much elevation gain, so I would recommend it to anyone with its beautiful waterfalls and full flowing river.

hiking
muddy
13 days ago

hiking
muddy
rocky
washed out
14 days ago

hiking
15 days ago

This hike was perfect! It’s secluded, gorgeous and semi-easy! Beware you will likely need a vehicle with high ground clearance as the road up to the trailhead is full of deep potholes. I was really happy we took our 4Runner. The hike is very gradual and easy. I was happy doing it as a beginner. The only spots I would classify as moderate or hard are spots where trees have fallen over the trail (causing you to duck under) or if you want to get down right next to the waterfall. That section is very steep and requires good coordination to get up and down. Overall this hike is a must-see if you’re in the area!! It’s breathtaking.

muddy
17 days ago

Hiked today. Found a pink IPhone on the trail. It's in the hiking register box. Hope the owner finds it. The 2 falls are beautiful. We hiked all the way to the camp but not much to see unless you are backpacking. 2 camp spots at the end with fire rings.

hiking
muddy
rocky
17 days ago

The only change I would make to all the excellent reviews is that I would describe the road as a series of potholes with intermittent pavement. Not for the faint of heart. Add 1/2 hour each way to travel time.

hiking
blowdown
muddy
18 days ago

Muddy! Cool trail stopped at 4 miles got kinda boring. Good rainy day hike!

hiking
18 days ago

Beautiful hike from the beginning to the end. There’s so much to see. The waterfalls are spectacular, there has to be 1000 different variations of green, birds, chipmunks and frogs, the amazing force of water! My son (10) and I hike here every year and it never disappoints. It is 8.5 miles round trip but it’s an easy 8.5 miles. Not a lot of elevation, there are roots in some places and other obstacles but all are easily passable. Stay safe everyone!

hiking
18 days ago

Nice trail. The wife is a fan of wooded trails with rivers, so this was an A++ in her book. The major waterfall feature was stunning - can’t believe I haven’t heard of it. None of the photos do it justice. You hit that major waterfall about a third of the way into to the trail. Rest of it is a nice walk through thick and tall trees and lush undergrowth. Road to trailhead is the opposite of smooth. But there were many cars that seemed to manage it. We were going fairly fast and it took us 3.25 hours.

Really pretty and relaxing hike following the river. the trail ends at a campsite, making me wish I had my tent!

hiking
blowdown
bugs
muddy
over grown
rocky
22 days ago

May 13th, 2020 This hike has beautiful waterfalls throughout it. The trail follows the river, so your able to here the peaceful sounds of water throughout your whole hike. The moss was beautiful along with all the huge trees. Although, there had been a couple fallen trees on the path,they were pretty easy to get over. The road leading to the trailhead had some stretches of potholes, probably wanna take a higher lifted car. The end destination was just a campsite next to the river, which was kind of disappointing. Saw only two groups of people. Overall the trail connects you within the stunning nature around. Enjoy your hike!

hiking
24 days ago

Great hike today on Sunday, May 10. I was concerned that this would be overcrowded but we saw approximately 50 people in 5 miles. The hikers were all respectful of distancing and some wore masks. I enjoyed this hike because you can hear the roaring river the entire time and the trail is well-kept and versatile. The pot holes are no joke! They are more like small craters in the middle of the road. I’m surprised some smaller cars had enough clearance.

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