Rattlesnake Lake/Three Forks loop
Rattlesnake Lake/Three Forks loop
3.4
(12)
99
riders
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
Start point
Parking
Get Directions
14.6 km
Highlight • Lake
Tip by
27.9 km
Highlight • River
Tip by
37.9 km
End point
Parking
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.