- 5595 Overseas Hwy Marathon, Florida 33050
- (305) 743-0230
McDonald’s is located in Marathon, Florida Keys.Thank you for visiting one of the thousands of Listings, Pages, and Posts which make up the Informational & Educational Directories of MarathonFlorida.com. Take the time to watch this commercial for a small business, locally owned since the 1970's. "Marathon Lumber locally owned for more than 40 years"