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Thompson Lake via Granite Creek Trail

Snoqualmie Region


Snoqualmie Region -- North Bend Area
View map below


14.2 miles, roundtrip


Gain: 3400 ft.
Highest Point: 4200 ft.


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If you're using Trailhead Direct, head down the Middle Fork Road for 0.18 mile to a parking area for the Granite Creek Connector. The trail takes off here, paralleling the road for about a mile before switchbacking away. Traverse the hillside, crossing many creeks as you go. The forest here is deep and lush, and burbling water accompanies you as you trek along. 2.8 miles from the trailhead, arrive at a junction. The trail coming from the left is the Granite Creek Trail, which starts at a trailhead, not (yet) serviced by Trailhead Direct. Turn right at the junction.

Now you’re paralleling Granite Creek. Just a tenth of a mile from the junction, a spur trail to the left offers an overlook of the creek, and another tenth of a mile on, a lovely new bridge is a great place to stop for a break. Here, you’re three miles into your hike.

It’s two more miles to your next significant junction. Be aware that this section of trail is prone to flooding and in the shoulder season you may need to ford creek crossings. A little more than a mile from the first junction, look to the right for views of Mailbox Peak. 0.7 mile past those first views, arrive at a second junction. To the right is a trail to Granite Lakes. While it’s a nice day destination, camping is not allowed at Granite Lakes.

If you’re camping, the trail to the left is what you want. It’s 2.1 miles of up-and-down to Thompson Lake, which sits just inside the Alpine Lakes Wilderness in the Mt. Baker-Snoqualmie National Forest. Once you arrive, find a spot and set up camp.


Thompson Lake via Granite Creek Trail

Map & Directions

Co-ordinates: 47.4921, -121.6399 Open map in new window


Snoqualmie Region -- North Bend Area

Mt. Baker-Snoqualmie National Forest, Snoqualmie Ranger District

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Getting There

Driving Directions

Drive I-90 to exit 34. Turn left onto 468th Ave SE and follow it 0.6 miles to the junction with SE Middle Fork Road. Turn right and follow SE Middle Fork Road 2.1 miles, until reaching a fork and staying right on Lake Dorothy road. Pass the Granite Creek Connector trailhead 0.7 miles later, on your right. 2.2 miles farther, just before the bridge across the Middle Fork Snoqualmie River, reach a driveway to your right, which leads to the Granite Creek trailhead. The trailhead has parking for 37 vehicles (2 disabled spaces). A privy and kiosk with a map are at the parking area. There is overflow parking along FR 56, opposite the trailhead, for 14 vehicles.

Parking Pass/Entry Fee

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Thompson Lake via Granite Creek Trail

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