Outside Canal some things further and/or connecting to the Canal Towpath
Resources bike haven, other assistance, stops, etc
2006, 2004 bike trip reports: Pittsburgh to DC Trip reports for various Great Allegheny Passage and C&O bike trips http://www.thirdwave-websites.com/bike/2006-pittsburgh-dc-c&o-gap.cfm
Get Out & Go Tours Ride the full length of the C&O Canal and GAP trails, on fully supported, non-camping tours, that support the existing businesses along the trails. http://www.getoutandgo.biz
Western Maryland Railway Great site describing the old railway that paralles much of the northern end of the C&O. Old and new shots, maps, history, a very good resource. http://www.wmwestsub.com/main.htm