For me, while going home, it's the last 2 miles. The whole ride is up hill but the last 2 miles are the worst. It goes from a low and steady climb to a 6% climb. I climb it easily when I just go out for a normal ride. After 10 hours of work and 9 miles of riding home, that last 2 miles can be hell. My total ride is 11 miles. I still love that ride.