Cobies

Cobies is a roadside clam shack with typical fried seafood, lobster rolls, burgers and ice cream (along with a decent canned beer list).  It's right off the Cape Cod Rail Trail near Nickerson State Park, so it's good for either a stop on your bike ride or a post swim snack exiting the park. 

<AH> Location is probably its best attribute.  I had a fish sandwich which was decent and the ice cream was so-so.  I wouldn't go out of my way to go there, but would certainly stop if the timing is right when driving/biking by. </AH>