Twin Falls (Olallie State Park)


Day Hike - Twin Falls (Olallie State Park)

Easy hike alongside the shores of the South Fork Snoqualmie River leading to a beautiful set of waterfalls.

COVID-19: Learn about our most up-to-date guidance for participants and leaders on our COVID-19 Response page. All participants and leaders must agree to the COVID-19 Code of Conduct before participating in this Mountaineers activity.
  • Easy
  • Easy
  • Mileage: 3.0 mi
  • Elevation Gain: 500 ft
  • High Point Elevation: 1,000 ft
  • Pace: 1.0+ mph

Parking Pass: Discover 

The parking lot fills up fast, so we will meet at the trailhead at 8:00 am.  

Let's carpool if we can.  Please make sure your driving preferences  are up to date. 

To reach the main trailhead, drive east on I-90 to exit 34 (about 31 miles from Seattle). Turn right at the end of the exit ramp onto 468th Avenue SE, and proceed a little more than half a mile to SE 159th Street. Turn left and continue another half mile where the road dead ends in the Twin Falls parking lot.


This is a great beginner/ family friendly hike.  We should see fully-blooming trillium, false lily of the valley, and swamp violets along the way. 

The pace will be slow and relaxed.  There are a few sets of stairs leading to the major viewpoints.  The stairs can be a bit slippery and the trail a bit muddy, so good footwear and a set of poles is highly recommended.  There will be plenty of opportunities to eat snacks and take photos along the way.   

Kids are welcome to join!  Just be aware that the water is running high and fast, so please keep them close by when near the water.  

There are a few blowdowns (trees laying across the trail).  Trail reports indicate that they are easily walked around.    

Goals for the trip: 

1. Be Safe

2. Have Fun

3. Learn Something (Have a hiking/backpacking question? Just ask!)

My expectations for participants:

1. Stay with the group.

2. Carry water & snacks.

3. Be kind and respectful of others.


My style:

1. I tend to have a more casual leadership style.  I enjoy getting to know participants and helping them reach their goals.   

2. If I don't respond to your e-mail right away it's because I'm out hiking/backpacking, driving my children to their various activities, or thinking of the best way to respond.  I will do my best to get back to you within a day. 

I hope to see you on the trail!   


Twin Falls (Olallie State Park)

Required Equipment

Required Equipment

The Ten Essentials

  1. Navigation
  2. Sun protection
  3. Insulation (extra clothing)
  4. Illumination
  5. First aid supplies
  6. Fire
  7. Repair kit and tools, including knife
  8. Nutrition (extra food)
  9. Hydration (extra water)
  10. Emergency shelter

(If you don't have the 10 essentials yet, let me know.  I have plenty of extra gear I can bring along.) 

Trip Reports