Originally Posted by
The Historian
Ah, but you are Terrible Tom, the man who isn't afraid of wolves. :-)
There's a lot of conflicting advice about the towpath. The latest Adventure Cycling recommends mountain bikes for the towpath, for instance. Yet their 2007 ride described at the Bike Washington site mentioned trikes and recumbent tandems completed the ride. And their magazine cover this month shows a trailer being used, even though Bike Washington doesn't recommend them.
Trailers are fine I have seen a few there. The surface is good given a good year and good weather. In that case fairly skinny tires (28mm) on a road bike are fine but given some rain it can become extremely muddy. Since you can't be sure of the weather fatter tires are a good idea.