Lake Washington and Lake Sammamish Loop

The full Lake Washington and Lake Sammamish Loop is generally considered moderate. While some sections, like parts of the East Lake Sammamish Trail, are relatively flat and easy, the combined length and cumulative elevation gain make it a good challenge. Riders should have a good level of fitness for the entire route.

The route is predominantly paved, often 98-100% asphalt, making it ideal for racebikes. You'll encounter a mix of relatively flat sections and rolling hills. Some specific segments, like the Cross Kirkland Corridor, might have gravel, but are generally manageable on a road bike. The East Lake Sammamish Trail, for example, is virtually flat as it follows an old railway corridor.

The loop offers continuous beautiful views of both Lake Washington and Lake Sammamish, along with glimpses of Mercer Island and Bellevue. Notable highlights include the unique experience of cycling across the Evergreen Point Floating Bridge and the East Channel Bridge. You'll also pass through sections like the SR 520 Trail — Kirkland section and the East Lake Sammamish Trail, both known for their pleasant environments and waterfront vistas.

Yes, this loop integrates several well-known regional trails, forming part of the larger Locks to Lakes Corridor and Leafline Trails Network. You'll ride on sections of the SR 520 Trail, Mountains to Sound, East Lake Sammamish Trail, and the Lake Washington Loop, among others. This connectivity allows for diverse routing options and extended journeys.

The best time to cycle this loop is typically from late spring through early fall (May to October) when the weather is generally dry and mild. Summer weekends can be busy, especially on popular sections like the Burke-Gilman Trail. Some parts, like Lake Washington Boulevard, are even closed to cars on summer weekends, enhancing the cycling experience.

Many sections of the trails that make up this loop, such as the Burke-Gilman Trail and East Lake Sammamish Trail, are multi-use and generally dog-friendly, provided dogs are kept on a leash. However, specific park rules or trail segments might have different regulations, so it's always best to check local signage for the exact section you are on.

No, generally you do not need any special permits or pay entrance fees to cycle the public trails and roads that comprise the Lake Washington and Lake Sammamish Loop. These are publicly accessible pathways.

There are numerous parking options around both lakes, as the loop connects various parks and trailheads. Popular starting points with parking include Marymoor Park in Redmond, various parks along Lake Washington Boulevard, or public parking near the Burke-Gilman Trail access points. Consider starting at a park with amenities like restrooms and water.

Yes, many sections of the trail are well-equipped with amenities. You'll find restrooms and water fountains at various parks located along the route, particularly in more urban and suburban areas. It's still wise to carry sufficient water, especially on longer rides, as the availability can vary between segments.

While individual sections are quite accessible, the full Lake Washington and Lake Sammamish Loop is a significant distance (over 70 km) with moderate elevation gain. For beginners, it might be better to tackle shorter segments first, such as the flat East Lake Sammamish Trail, before attempting the entire loop. Good fitness is recommended for the full experience.

Cycling across the floating bridges, like the I-90 bridge and the SR 520 Trail, offers a truly unique experience with elevated views across Lake Washington. Be aware that these sections can sometimes be loud due to traffic and potentially windy, but they provide a memorable perspective of the Seattle area's waterways and skyline.