Moderate hills, with generous amount of paved roads, and tough segments of mud and gravel offroad legs. Three legs of canoe-paddling 100 yards each) in a small lake preceded by a "challenge" in which team members had to cross lake in three rafts using only two paddles. I wasn't really in shape for the bike which featured some pretty good hills, but I was consoled somewhat by seeing many others who were also forced to walk bikes up steepest portions. This was my first adventure race and I was pleased with our team's finish. I found this 18 mile adventure race tougher than the two half IMs I've done, and probably on a par with a marathon in terms of fatiuge upon completion. Ten teams posted DNF.