Here in Houston, one of my favorite bakeries (well, there aren't really that many) makes a rice pudding empanada. But who's to say that the starch in starch combination is unique to Houston?
A popular street food item in Japan is yakisoba pan. Yakisoba are basically stir fried noodles. These are in turn stuffed into a long roll, and behold - a noodle sandwich. It's actually quite good when done right, and I should the perfect portable carboloading bullet for your marathon run.