Mountains to Sound and Snoqualmie Valley Trail Loop

This loop combines paved sections with extensive stretches of crushed gravel on the Snoqualmie Valley Trail and Palouse to Cascades Trail. For comfortable road cycling, we highly recommend a gravel bike or a robust touring/endurance road bike equipped with wider, more durable tires (32mm or wider) to handle the varied surfaces effectively.

The Mountains to Sound Greenway Trail (MTSGT) near Seattle and Bellevue is mostly paved. However, the Snoqualmie Valley Trail (SVT) and significant portions of the Palouse to Cascades State Park Trail (PCT) are predominantly crushed gravel. While some gravel sections are hard-packed, others can be looser or rougher, especially east of Hyak on the PCT. Be prepared for a mix of surfaces throughout the loop.

The loop offers diverse scenery. Near Seattle, you'll find urban and waterfront views, including vistas of Lake Washington and Mercer Island, and you'll pass through urban parks. Notable highlights include the Burke-Gilman Trail, Log Boom Park (Tracy Owen Station), the East Channel Bridge, and The I-90 Bridge View. Further east, the Snoqualmie Valley Trail offers rural landscapes, agricultural fields, and views of Mount Si and the historic Tokul Trestle. The Palouse to Cascades Trail features dense forests, mountain views, and the unique Snoqualmie Tunnel.

No, the 2.3-mile Snoqualmie Tunnel on the Palouse to Cascades Trail is closed annually from November 1st to May 1st due to ice falling from the ceiling. If you plan to ride during these months, you'll need to find an alternative detour. When open, it's unlit, so bring strong lights and warm clothing.

The best time to cycle this loop is typically from late spring (May) through early fall (October) when the weather is milder and the Snoqualmie Tunnel is open. Summer offers the warmest temperatures, but spring and fall provide beautiful foliage and fewer crowds. Avoid winter due to tunnel closure and potentially icy or muddy conditions on unpaved sections.

Generally, there are no specific permits or entrance fees required for cycling on the Mountains to Sound Greenway Trail or the Snoqualmie Valley Trail. However, if your route includes sections of the Palouse to Cascades State Park Trail, a Discover Pass may be required for parking at some trailheads. Always check local regulations for specific parking areas.

Many sections of the trails that make up this loop, such as the Snoqualmie Valley Trail, are dog-friendly, typically requiring dogs to be on a leash. However, specific rules can vary by park or trail segment. Always check signage at trailheads and ensure your dog is well-behaved and on a leash to ensure a pleasant experience for everyone.

Given that this is a combination of trails, there are numerous access points. Popular starting points often include parks along the Mountains to Sound Greenway Trail closer to Seattle or Bellevue, or trailheads in towns like Duvall, Carnation, Fall City, Snoqualmie, or North Bend along the Snoqualmie Valley Trail. Look for public parks or designated trail parking areas in these towns. Public transport options are more prevalent closer to Seattle.

Yes, this loop is part of a larger regional trail network. It extensively uses the Mountains to Sound Greenway Trail and the Snoqualmie Valley Trail. It also connects with parts of the Palouse to Cascades State Park Trail. Other trails you might encounter or cross include the Burke-Gilman Trail, Lake Washington Loop, Sammamish River Trail, and various local greenways and connectors.

Yes, the loop passes through or near several towns such as Duvall, Carnation, Fall City, Snoqualmie, and North Bend. These towns offer access to amenities like parks, restrooms, cafes, and restaurants where you can refuel and resupply. It's always a good idea to carry sufficient water and snacks, especially on longer stretches between towns.

The primary challenge for road cyclists on this loop comes from the varied surface conditions. While sections of the Mountains to Sound Greenway Trail are paved and relatively easy, the extensive crushed gravel sections of the Snoqualmie Valley Trail and Palouse to Cascades Trail require more effort and a suitable bike setup. The overall distance of over 120 km and the cumulative elevation gain of over 1000 meters also contribute to its 'difficult' rating, requiring good fitness and endurance.