I don't know if there are any sailers in the mix here but I've done some coastal sailing and really love it.
I started tracking the Vendee Globe boats that left France on Nov 7th for a solo,non stop, unassisted race around the world. Pretty crazy when you think about it, these guys and gals set there auto pilots and go to bed for an hour or so at a time with the boats ripping along at 20 knots or so which is really fast for a sailboat!
It's kind of like a Dakar of the sailing world only you don't get any help.