The Open Canoe Sailing Group (OCSG) run a number of events throughout each year, comprising training, racing and expeditions. More details on their webpages here.
One of the main suppliers of sailing canoes and equipment is Solway Dory, based in the UK Lake District.
Click to enlarge.
I am in the process of building myself a set of 48 inch outriggers, similar to the ones on the left hand canoe in the picture above. My boat, on the right above, is a 16 ft Sunart from Solway Dory, and carries 40 sq. ft. of fully battened sail (its reefed to the first reef above).
The outrigger build pictures are here.