John W. from Pittsburgh, PA on 11/9/2015 9:49:54 PM:
Also, in most parts of the C&O, it's extremely dark at night. Like "can't see your hand in front of your face" dark. Anywhere outside of greater DC, you don't get the light pollution to give you even the faintest light to make out where you are. You're also on a trail that has lots of tree conopy making it darker at twilight. I would carry a backup light that you can get to easily if your initial light source goes out. I can't imagine biking or hiking at night between Hancock and Cumberland! Good luck on your trip!