40-Mile Loop Trail Map (386KB | Adobe PDF)
      Source: 40-mile Loop Land Trust

The 40-Mile Loop Trail is a century long effort to build a comprehensive trail system through and around Portland.

The planned loop trail has lengthened to more than 140 miles to include all of Multnomah County and to connect more than 30 parks. The trail connects parks and locations along the Slough and along the Columbia, Sandy, and Willamette Rivers and Johnson Creek in an almost continuous loop.

Biking Maps

Cycle the Well Field Map
Cycle the Well Field Bicycle Route Map (4.8MB | PDF)

Portland Office of Transportation

North Portland Bicycle Map (2.3MB | PDF)
Northeast Portland Bicycle Map (2.7MB | PDF)

Columbia Slough Locations Map ( 126KB | .GIF)

Columbia Slough Watershed Overview ( 1.45MB | PDF)

Regional Watersheds ( 52KB | .GIF )

A map of Portland's Watershed as developed by the City of Portland Bureau of Environmental Services.