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Routes
Road cycling routes
United States
Washington
King County
Snoqualmie

Rattlesnake Lake/Three Forks loop

Moderate

3.4

(12)

99

riders

Rattlesnake Lake/Three Forks loop

02:04

37.9km

340m

Road cycling

Cycle the moderate 23.5-mile Rattlesnake Lake/Three Forks loop, featuring river views, forested hills, and varied terrain near Snoqualmie.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Cedar River Municipal Watershed

Waypoints

A

Start point

Parking

Get Directions

1

14.6 km

Rattlesnake Lake

Highlight • Lake

Rattlesnake Lake is part of the Rattlesnake Lake Recreation Area, designated for day-use activities. The lake spans 111 acres, spring-fed by the Cedar River, and is a popular spot for fishing and swimming.

Tip by

2

27.9 km

Snoqualmie River

Highlight • River

The Snoqualmie River is a 45-mile-long river that starts at the confluence of the river's three forks near Snoqualmie. It features several waterfalls, with the most popular one being Snoqualmie Falls, known as one of Washington's most scenic attractions.

Tip by

B

37.9 km

End point

Parking

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Way Types & Surfaces

Way Types

22.8 km

12.5 km

2.46 km

< 100 m

< 100 m

Surfaces

25.2 km

11.5 km

1.14 km

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (330 m)

Lowest point (120 m)

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Weather

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Today

Sunday 10 May

16°C

8°C

13 %

Additional weather tips

Max wind speed: 10.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What kind of terrain can I expect on this cycling route?

The route primarily features well-paved surfaces, but be prepared for some unpaved and potentially challenging segments. Parts of the Snoqualmie Valley Trail are an old railroad grade. Rattlesnake Road itself is often dirt/gravel, making it suitable for gravel bikes. You'll encounter a mix of asphalt, paved, and gravel sections.

How challenging is the Rattlesnake Lake/Three Forks loop for cycling?

This loop is rated as moderate for road cycling. It requires a good level of fitness due to its varied terrain and some elevation changes. While the climb to Rattlesnake Lake on the Snoqualmie Valley Trail is relatively easy, the overall loop includes more demanding sections.

What natural features and landmarks will I see along the way?

You'll enjoy picturesque views of the Snoqualmie River, especially the South Fork, and forested hillsides. Keep an eye out for wildflowers in summer. Major attractions include Snoqualmie Falls and Rattlesnake Lake, where you can access the Watershed Nature Center. The route also features a high trestle bridge from its old railroad grade.

What is the best time of year to cycle this loop?

Summer is ideal for cycling this route, offering pleasant weather and the chance to see wildflowers like blackberry, elderberry, and wild rose. While the route is accessible year-round, be mindful of potential winter conditions on unpaved sections.

Where can I park for the Rattlesnake Lake/Three Forks loop?

Parking is available at various points along the route, particularly near the start of the Snoqualmie Valley Trail or closer to Rattlesnake Lake. Specific parking areas are typically well-marked at trailheads.

Do I need any permits or pay entrance fees for this route?

Generally, no specific permits or entrance fees are required to cycle the Rattlesnake Lake/Three Forks loop itself. However, always check for any updated local regulations or parking fees at specific access points.

Is the Rattlesnake Lake/Three Forks loop dog-friendly?

While specific regulations can vary by section, many parts of the route, especially the Snoqualmie Valley Trail, are dog-friendly. Always keep your dog on a leash and be prepared to clean up after them.

How long does it typically take to complete this cycling loop?

The loop is approximately 37.8 kilometers (23.5 miles) long and typically takes around 2 hours and 4 minutes to complete by racebike, depending on your pace and stops.

Does the route connect with other trails?

Yes, the route incorporates significant sections of the Snoqualmie Valley Trail and also passes through parts of the Washington Timber Trail. You might also encounter smaller segments of trails like the Meadowbrook Trail and Tanner Trail.

Are there places to eat or drink near the route?

The towns of Snoqualmie and North Bend, which are close to the route, offer various cafes, pubs, and restaurants where you can refuel before or after your ride.

Is this a family-friendly cycling route?

While the overall loop is rated moderate and includes varied terrain, certain sections, particularly the paved portions of the Snoqualmie Valley Trail, can be suitable for families. However, the full loop might be too challenging for very young children or beginner cyclists due to its length and mixed surfaces.

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