I cycled C & O Canal and Great Allegheny Passage from Washington D.C. to Pittsburgh, PA, and back.
More correctly we cycled from International Airport Dulles to Washington D.C. on W & O Trail, and only then we got on C & O Canal Towpath.
The odometers showed more than 1500 km when we finished the ride in IAD. Here is
the report about this tour with photos.
Bikes and equipment we brought with us from Ukraine as checked-in baggage.