Sink into serenity at Tranquility Bay, one of Marathon's best-rated resorts. Spend your days relaxing on the powder-soft sands of our private beach, or poolside at one of our three sparkling swimming pools. Satisfy your sense of adventure with world-class diving, snorkeling, and water sports. Then retreat to your own beach house or Tropical Garden Guestroom. Just 90 miles south of Miami and 45 miles north of Key West, paradise is closer than you think. Are you ready to embark on a journey of relaxation in the Florida Keys?