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The Florida Keys Experience

Live for the moments you can’t put into words, right here at Tranquility Bay. With its glorious year-round sunshine, Marathon is a world-class destination for family vacations, romantic getaways, and adventure tourism. So dive into our activities, indulge with an in-room spa treatment, and discover why the Florida Keys is set to become your favorite place.

Onsite watersports & activities

With a choice of onsite watersports available from our safe and private bay, plus a host of other fun outdoor activities to experience, you can enjoy an active outdoor vacation without having to leave our paradise resort. Try kayaking, a WaveRunner, or Hobie Cat out on the water. Test your skills on our Nicklaus Design putting green, or play beneath the palm trees on our beach volleyball court.

Discover our onsite watersports & activities

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Holiday activities

Join us this season as we spread joy with festive experiences sure to make any guest happy. We have crafted some family-friendly experiences to help get you into the holiday spirit. The activities are open for kids 12 and under and are all inclusive for guests. 

View activity schedule

Nearby attractions

At Tranquility Bay, you’ll find yourself at the center of all the action. Discover the best of the Florida Keys and their natural beauty, superb weather, and exciting attractions here on our doorstep. We call it the Keys to your happy place.

Explore our neighborhood


Add a little indulgence to your stay and enjoy true tranquility with our tropical in-room spa services. Custom-made herbal scrubs, facials and body masks will transport you to wherever you want to be, all from the comfort of Tranquility Bay Resort.

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Just for you

Your perfect vacation, your way; at Tranquility Bay, your personal oasis awaits. To help you design your dream escape, we’ve gathered all our top tips on what to see and do, whatever the season. Ready to make some memories?

Plan your stay

Family travel

Grab life by the memories in our laid-back paradise, where family fun is guaranteed. With three pools, a private beach, onsite watersports, and lots to experience nearby, you’ll all be spoilt for choice with things to do.

Discover family fun


Embrace tropical island living and check out the Florida Keys’ best events. From food festivals and beach parties to fishing tournaments and paddles, discover what is happening during your vacation and join in the fun.

View events

Planning guide

To help you choose when to indulge in our subtropical paradise, we have highlighted the best reasons to visit Tranquility Bay during each month of the year. Discover our travel tips including weather, events, seasonal offers, and more.

Plan your visit

A Person Swimming In Water