The Mountains to Sound Greenway Infinity Loop is a nearly 400-mile route that goes to the northern, eastern, western, and southern borders of Washington State’s Mountains to Sound Greenway. The route encompasses 220 miles of rail trails and roads suitable for bike-packing and 175 miles of backpacking.  It travels through the Alpine Lakes Wilderness and downtown Seattle, old-growth forests, alpine meadows, shrub-steppe deserts, and lowland river valleys.

Maps and other resources can be found at:

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