Explore 2015 - view hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

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This one has been on my list and we couldn’t have had a more beautiful day for it (11/18/18). Hiked the new trail up and back down, I don’t think my knees could have taken the old trail from what I hear. Pretty brutal last 1/2 mike until you reach the Peak but no question, worth it all! Gorgeous views of the PNW.

The summit isn’t the highlight as much as walking through the moss covered boulders and trees. Very popular, expect crowds.

We did this hike on Mothers Day. We took the old trail up & new trail down..wear proper shoes for the down hill. Amazing accomplishment....hardest
one for me so far

hiking
6 days ago

Great quick, and relatively easy hike close to town. There were only a handful of us on the trail but I think that’s mostly because it’s Tuesday...it was pretty quiet once we started climbing which was nice. The last push to the top is tough but not impossible by any means. Views from the top were nice. Would definitely recommend if you don’t want to drive too far, or don’t have all day to hike.

Definitely a workout! Did this hike on Monday (11/13) and it was relatively busy at the top from it being a holiday. My phone recorded round trip about 12 miles, but I’m not sure how accurate this is. The last 0.5 miles are a grind but the view from the top is worth it. Watch for ice patches, poles are a good idea. When we hiked a group of hockey players were taking up a fire hydrant, look for it at the top!!

What a surprise—2 mountain goats chowing down on the rocky cliff not far from the climbing face. On a nice day, this is a good choice for a hike close to Seattle. Sweeping views from the top but be prepared to hear I-90 traffic and see ever expanding North Bend.

backpacking
9 days ago

I got engaged on Mount Si! Great day to go for a hike. Very clear and the trail was well maintained. There is a small spot where a tree has fallen over the trail and people have made a trail through it, but coming back down it’s hard to tell where it is. All over perfect day.

12 days ago

Great Hike.

hiking
16 days ago

Always a fun little hike :)

Great view from the top! A little steep at the end, but totally worth it.

20 days ago

The rain has arrived. Trail was not really muddy or slippery, though the top was shrouded in clouds with zero views. Good exercise as usual. Tip for getting some view under such weather: at the UPPER talus loop trail junction take a detour onto talus loop trail. In about five minutes you will arrive at the talus pile. This is low enough that it can be below the clouds, but high enough to have a descent view.

hiking
22 days ago

Hiked it with my dog on 10/27. I am super out of shape but I pushed myself and made it up and down! I am proud of myself- as this hike is an ass kicker. It was beautiful. My dog had no issues, he’s in much better shape than me haha!!

hiking
22 days ago

10/28/18 Rainy day for a hike but great none the less! We took the new trail both ways. It was longer than the 8.4 mile loop from all trails. Our phone apps all said 13.1 miles, but who knows. It was steady uphill climb, but totally doable. We took breaks for water and snacks. When we got to the rock field toward the top the temperature dropped and the wind picked up. Right near the summit we had sideways rain/snow mix. It was a little scary at times since we were out in the open. While it was foggy and cloudy and rainy most of the rest of the time, it was a great hike! We are planning on going in the early summer again to see all the views.

hiking
23 days ago

Amazing hike today!!! Went up Si a single lady came down engaged

Great hike today! Beautiful weather, no snow, lots of fallen leaves. Glad I brought my poles.

hiking
25 days ago

Decent traffic, great views.

The new trail is pretty straight up, with no straightaways. I was basically bear crawling up half of it. Definitely felt it the next two days after completing it, but it was well worth the views :).

Did this hike yesterday (Oct. 21). We took the old trail up and new trail down to save our knees. It was a perfect cloudless Sunday for this hike. There are parts on the old trail where it is a little hard to navigate, nothing to where you cant find the trail again though. It was definitely more steep than the new trail, but if im being honest i wish i would have taken the old trail up and down. The new trail is a bit longer than the old trail but not as steep. Plenty of people on this trail as well. Both on the old and new trail. Also, great veiws at the top. The workout is worth it.

hiking
29 days ago

Butt kicker, but a nice view at the top of the rocks. Only real downside is the number of people and an overall lack of trail etiquette

Wonderful hike with kids

1 month ago

Great view at the top. Nice shade along the trails. Overall not too much litter for as many people that visit this trail.

Did this hike in August, it’s a nice hike however you don’t have views till you literally reach the top. The rock scrimmage wasn’t bad, it was the loose dirt after the scrimmage for .60 miles that was a tad scary.

It took us 2hr 45 min up, we cruised up averaged 24 minutes it is steep and consistent up, but I don’t think this hike was extreme. Its hard at the top but not a hard hike.

The top was full of bugs around the mailbox, it was gross, I think someone put food inside.

I would do this hike again just for the view at the top.

hiking
1 month ago

October 13, 2018. Hiked up the old trail and down the new trail to try and save my knees. The 4,000 elevation gain was great for getting the heart rate up which I love. The 360° view at the top was beautiful. I could see Mt. Rainier, Mt. Baker, and Glacier Peak. Lots of people at the top. Met a friend down at the parking lot and hiked the whole way with him. Even went on an extra adventure from Mailbox Peak to Dirty Box Peak. Today was beautiful with blue skies and a high of 63°. Didn’t need more than a t-shirt...and extra deodorant ;) Enjoy!

Had a great trip up the old trail, over to Dirty Box Peak (just for fun), and back down the new trail. Weather couldn't have been more perfect and made a new hiking friend along the way. Views were awesome today!!

hiking
1 month ago

Recommended by friend who travels to Seattle along with many locals. Great hike, Douglas Firs were awesome and reaching the top was rewarding!

hiking
1 month ago

great quick hike, great for dogs. Beautiful views from the top.

hiking
1 month ago

Went up the Old trail and down the new trail. Be warned, the old trail is VERY difficult and slippery when wet. The views from the top are OK.

hiking
1 month ago

Hard but beautiful view of Seattle from the top

hiking
1 month ago

Great hike! My ass feels like it got the workout of a lifetime.

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