This was a new course in 2014 (I'd never run it before though), and it is now an out-and-back along ALL ocean! It was incredibly stunning the whole way, and actually enjoyable to see the fastest runners coming back our way - and to say hi to slower friends once I turned around. High-fives all around! But on a windy or rainy day in October, this course could be very exposed. It's all flat! And super easy to park at the start/finish.
My full experience of Cape Cod Marathon, Half and Relay weekend can be found here on my blog: http://capecodrunner.com/post/101085083557/cape-cod-2014