Apartments For Rent Marathon Florida . Welcome to the island club, where amenities are plentiful for the. Our cozy community offers comfortable 1, 2 and 3 bedroom apartment homes. Rentals in Marathon FL Tarpon Harbour Apartments from www.tarponharbourapts.com 183 e cahill ct, big pine key, florida 33043. Marathon, fl houses for rent. A rental apartment in this city is on average $2,623.