The following provides information and applications used by the City of Marathon.If you have further questions regarding an item on this website, please contact a member of our staff to help you further by calling 305-743-0033. Note: The below Application and Storm Retention Calculation sheets have been created so you can fill the forms out electronically. After you have filled out the appropriate application please bring the forms and the required information to City Hall to be processed. You may also mail in the completed form to City of Marathon,9805 Overseas Highway, Marathon FL 33050 if it is not stated that you must apply in person for the need application. Adobe Acrobat Reader is required to view the following forms, applications, and instructions.