You could always circumnavigate Ireland :-)
http://www.amazon.com/On-Celtic-Tide.../dp/0312263686
I enjoy kayak camping, which can be anything from bouncing around the lakes in the Adirondacks or the Connecticutt River in New England to more exciting travels like sea kayak touring on the Maine Island Trail. I also enjoy backpacking though I think I'm more of a long distance cyclist than a "thruhiker" or similar...
I just enjoy exploring areas and forests and mountains, the mode of transportation isn't too important. I think you will find kayak/canoeing very interesting and a lot different than say backpacking or bike touring... You can carry *a lot* in a touring kayak or even more in a canoe so right there, that would be new to you.
Jay