- 350 Sombrero Beach Rd, Marathon, FL 33050
- (305) 289-2480
Dolphin News Network (DNN) is the Marathon High School Television Channel 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"