My partner and I have a backpacking trip planned in the Southwest in March, so we decided to hit our annual winter hike of Si to train. The "new" parking lot had maybe a dozen cars parked with ample space for more when we began our hike around 12:15. We experienced intermittent parking lot slush and mud with a short rough patch of potholes, but nothing the average Subaru can't handle.

The trail fluctuates between slush and muddy track for the first 2k feet. We used poles and traction from around 3k in elevation to the top. Expect a bit more snow at the exposed summit, and always keep your eyes out for pesky jays. Views were cloudy and we did not go all the way to the Haystack.

The trail is in pretty great condition otherwise. I'd definitely recommend carrying some sort of traction this time of year, but snowshoes are probably overkill. 

Elevation: 3,261
Miles: 9.25

Today's hike was a case example of the changeable conditions on Si/Teneriffe in winter. I set out under blue skies at the Mount Si trailhead and a favorable weather report. By the time I got to Teneriffe Falls, it was snowing heavily. It's always good this time of year to pack spikes and rain gear on your North Bend hikes, even if they seem unnecessary.

A previous trip report had mentioned Teneriffe Falls being frozen and I wanted to check it out. I set out from the Si trailhead and went up the Talus Loop and Teneriffe Connector over to the Falls. The frozen falls are stunning. Very worth the trip. I returned via the Roaring Creek trail.

I ended up using spikes from the Si Trail / Talus junction. You might be able to get by without as it's mostly packed snow and not a lot of ice, but spikes or poles would make your experience a bit nicer. Being Monday, I had the falls to myself and only saw one other person after I left the Si trail.

Started.off at the Mt Si Trailhead and took Talus Loop trail over to Teneriffe Falls.   The trail was snow covered starting at Talus Loop but not difficult to traverse.  I was glad that I had boots on because the snow was 6 inches deep in some places.  The Teneriffe Falls trail was a mixture of snow and rocks.  I didn't use any traction for this section.   The falls were partially frozen and beautiful.   I took the upper Talus Loop trail back and decided to continue up the Mt Si Trailhead to the top.  Shortly after connecting with the Mount Si Trailhead I put on microspikes just to make it easier to hike and not to deal with any slipping and I knew I would need them on the way down. I made it up to the clearing and decided to head over to the Snoqualmie Valley overlook. It was nice that someone had already broken through the fresh snow and so I just followed their footprints. The view of Seattle and the Cascades were amazing, but no Mt Rainier View today.  Looks like more snow in the future, so be safe out there.

Strava clocked it at just under 12 miles and just over 4000 feet of elevation gain. 

A great day of firsts! This was my first time with both my long time hiking buddies together for a hike this year and wanted to visit Si as it’s a good winter workout. We were first into the lot at 645 with no other tire tracks, first up the trail with no footprints, and first on top! We hung out for nearly a half hour enjoying the super clear blue skies and zero breeze (another first - no wind after 50 plus Si trips)! We did not see another hiker until we were over a mile from the viewpoint and only counted 24 people all the way to the parking lot. We even talked with several people who were on their first trip to Si - what a terrific introduction for them! 
Trail was snow covered from the lot with a few inches of fresh snow at the viewpoint. We put on microspikes for the upper half of the return trip just for a bit of stability. 
Simply wonderful winter wonderland hike on a bluebird day. 

FOUND traction device on Mt Si near the top, above and beyond the boulder field but before haystack. 

Post a comment with the manufacturer, size and color to claim it and I will be happy to help get it back to you. 

For everyone else, trail was not difficult today.  Not much snow.  Didn't need traction devices but did use poles at times. 

2-3" snow at the top.  Areas of sparse tree cover or completely in the open had 6-8".