2.6
(13)
40
hikers
03:29
5.31km
1,060m
Hiking
Hike the difficult 3.3-mile Mount Si Old Trail, gaining 3468 feet for panoramic views of the Upper Snoqualmie Valley and Mount Rainier.
Last updated: February 26, 2026
Tips
Includes a segment that may be dangerous
A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.
After 5.20 km for 119 m
Waypoints
Start point
Parking
Get Directions
279 m
Viewpoint
Viewpoint
4.80 km
Highlight • Viewpoint
Tip by
5.07 km
Highlight • Climb
Tip by
5.19 km
Highlight • Summit
Tip by
5.31 km
End point
Way Types & Surfaces
Way Types
5.15 km
119 m
< 100 m
< 100 m
Surfaces
5.19 km
121 m
< 100 m
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Elevation
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Weather
Powered by Foreca
Today
Wednesday 1 July
19°C
11°C
33 %
Additional weather tips
Max wind speed: 8.0 km/h
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This route was planned by komoot.
Yes, a Discover Pass is required for parking at the trailhead, as the Mount Si Old Trail is located within the Mount Si Natural Resources Conservation Area. You can purchase a day pass or an annual pass online or at various retail locations.
The trailhead for the Mount Si Old Trail is located near North Bend, Washington. Parking is available at the Mount Si Trailhead parking lot. Be aware that this is a popular area, so parking can fill up quickly, especially on weekends. Arriving early is highly recommended.
Yes, dogs are generally allowed on the Mount Si Old Trail. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other hikers. Please remember to pack out all pet waste.
The best time to hike the Mount Si Old Trail is typically from late spring through early fall (May to October) when the weather is milder and the trail is mostly free of snow and ice. During winter months, snow and ice are common, making traction devices like microspikes or crampons highly recommended due to the steep grades.
The trail primarily winds through a classic Pacific Northwest forest. As you ascend, you'll pass through sections like the Boulder Garden Loop with its moss-covered rock formations. The reward at the top includes outstanding panoramic views from the Mount Si Viewpoint, where you can see the Upper Snoqualmie Valley, Puget Sound, the Olympic Mountains, Mailbox Peak, Mount Washington, Rattlesnake Ledge, and even Mount Rainier and the cities of Seattle and Bellevue in the distance. The true summit, Mount Si Peak, involves a challenging scramble from the Base of Haystack Scramble.
The Old Trail is generally considered steeper and more direct than the newer Mount Si Trail. It offers a more challenging and relentless climb, with some sections gaining about 1,000 feet per mile. It is also typically less crowded, providing a greater sense of solitude, especially on weekdays or during the off-season. The Old Trail has historical significance as the original primary path to the summit.
Due to its significant elevation gain (over 1,000 meters) and steep, relentless climb, the Mount Si Old Trail is rated as difficult and is generally not recommended for beginners or families with young children. It's a strenuous hike that requires good physical conditioning.
Expect a steep and relentless climb through a Pacific Northwest forest. The trail features switchbacks, and while generally well-maintained, you'll encounter rocky and potentially slippery sections, even in summer. During colder months, snow and ice are common, making the terrain more challenging.
Yes, while primarily following the Mount Si Old Trail, this route also passes through sections of the Mount Si Trail and the Old Si Trail. Smaller portions of the Little Si and Blowdown Mountain Trail are also encountered.
Given the trail's difficulty and varied conditions, wear sturdy hiking boots with good ankle support. Dress in layers, as temperatures can change significantly from base to summit. Bring plenty of water, high-energy snacks, a map or GPS device, a first-aid kit, and rain gear, even on sunny days. In winter, traction devices (microspikes/crampons) and trekking poles are essential.
The Mount Si Old Trail is located near North Bend, Washington, which offers various amenities. You can find cafes, restaurants, and other services in North Bend for pre- or post-hike refreshments and supplies.
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