Clockwise ride around Mount Hood, starting/ending in Sandy, OR. The first 100k has no services, and includes 6,600 feet of climbing and 5.5 miles of gravel. Beautiful quiet forest roads on the west side, open spaces and state highway miles on the east side. Check with the Zigzag Ranger Station for road conditions before starting. Snow can linger later or arrive early, wildfires and logging can close forest roads. https://www.fs.usda.gov/recarea/mthood/recarea/?recid=52778