Rick Hancock from Grafton, Va. on 4/1/2014 8:34:54 PM:
I'm not saying it couldn't happen but the odds of seeing a bear along the c&O are really slim and I agree the best area would be slightly east and west of Little Orleans (most remote section.) Instead of worrying about bear spray I'd suggest a bear canister to carry/store your food. There are several sizes available although you might need to strap it to your rear rack instead of in your panniers. Garcia Machine is one company that carries them. Check Rock Creek, Campsaver, Travel Country, or just do a web search.
I've been hiking/biking the c&O for close to 30 years, I've seen bear tracks a couple of times, heard of a few encounters, but have yet to see a bear along the route. Just keep a clean camp, hang your food, and you shouldn't have any problems.