Last Updated on September 19, 2023

Marathon to Key West may only be 45 miles apart, with a straight through drive time of around an hour, but the following stops should definitely be on your itinerary! The Florida Keys as a road trip is pretty short as far as road trips go, spanning just 112 miles of US Route 1, however it makes up for it in uniqueness.

Disclosure: I received complimentary tickets to some attractions mentioned. There are also affiliate links within this post, as always options are my own. I do my best to try and keep information up-to-date but please check direct with businesses for current opening times and prices. For more information visit my Privacy & Disclosure Policy.

Marathon to Key West

Also known as the ‘Overseas Highway’, the majority of the road is exactly that, a road over the sea! The highway crosses 29 of the Florida Keys islands which are connected by 42 bridges! Here’s a guide of some of the must see stops from Marathon Key to Key West!

TRIP NOTES

🕐Duration: 1hr drive time with no stops (full trip = 3 days)

🗺Distance from Marathon to Key West: 45 miles

📅Month of travel: Nov/Dec

🍽Where to eat: The Stoned Crab, Key West FL (free shark feeding!)

🏨Where to stay: Ibis Bay Beach Resort, Key West FL

🎡Don’t miss: The Turtle Hospital, Marathon FL

Marathon | Little Duck Key | Bahia Honda Key | Big Pine Key | Ramrod Key | Key West

Marathon to Key West Frequently Asked Questions

Things To Do Between Marathon and Key West

1. Marathon Key

The Turtle Hospital

The first stop on your Marathon to Key West road trip should be a visit to the Turtle Hospital!  Marathon Florida is home to the first hospital of its kind in the whole WORLD. The guys at this sea turtle rehabilitation centre do an AMAZING job of raising awareness of the species as well as rescuing them and nursing them back to health.

The hospital is open daily and run 90 minute educational tours, giving visitors a look at some of the behind the scenes workings of the hospital.

They handle all types of ‘turtle problems’.  From injuries caused by humans, such as turtles that have been struck by a boat and ones that have swallowed waste (plastic etc) to natural problems like Fibropapillomatosis tumours and turtles that have been caught by changing sea temperatures during the migration season.

Hundreds of turtles pass through their doors each year, with most of them being re-released back into the wild. There are a few permanent residents on-site that due to their injuries, wouldn’t be able to survive in the wild, but are able to live a happy, healthy life at the centre!

Read more: You can find my full guide to the Turtle Hospital here: Rescue, Rehabilitation, Release: Visiting The Turtle Hospital, Marathon FL

🕐Open 7 days a week between 9am – 6pm (last tour at 4pm)

💰Adult: $30 | Children (4-12yrs): $15

There’s so many things to do in Marathon Florida, you can find out more here. Another popular attraction is the Dolphin Research Center.

In August 2022 the Pigeon Key Express road train started doing daily tours from Marathon to Pigeon Key. It goes along the old Seven Mile Bridge that runs parallel to the new Seven Mile Bridge (see below).

2. Little Duck Key

Seven Mile Bridge

Seven Mile Bridge is the longest bridge in the Florida Keys, connecting Marathon Key to Little Duck Key. The current bridge, which opened in 1982, is actually just under seven miles long. The original ‘Seven Mile Bridge’ runs alongside the current vehicle bridge and is open to pedestrians and cyclists.

When driving along the bridge, there is nowhere to stop and get out. The best place to park up is at the Little Duck Key public boat ramp. If you are driving from Marathon to Key West, the car park will be on the right hand side of the road.

Here you’ll be able to get out and walk along the pedestrian part of the bridge. This is also a popular fishing spot. They even have an annual bridge run where the Seven Mile Bridge gets closed to all public traffic for just over an hour while the race takes place!

For drone fliers wanting to take aerial pictures of Seven Mile Bridge, this is also the best place to send it up. The city of Marathon is a no fly zone, even outside of the Marathon airport radius, so the Little Duck Key end of the bridge is the only option!

3. Bahia Honda Key/Spanish Harbor Key

Bahia Honda Rail Bridge

A short way along from the Seven Mile Bridge you’ll come across the remains of the Bahia Honda Rail Bridge.  

I would suggest the best place to see it is from is Bahia Honda Key State Park on Bahia Honda Key (left hand side of the road heading southbound). There’s a car park at Calusa Beach and you can walk along a small section of the old bridge from this side.

I actually stopped in a small roadside parking area on the left hand side of the road, just as you reach Spanish Harbor Key. You’ll see the old rail bridge on your left as you drive over the new bridge. The responsible person in me wouldn’t recommend this track though.

History of Bahia Honda Rail Bridge

The history of the Bahia Honda Rail Bridge (along with the original Seven Mile Bridge) is pretty interesting. For a long time, the Florida Keys could only be reached by boat.

Henry Flagler, the founder of Standard Oil, paid for and built the Miami to Key West stretch of the Florida East Coast Railway. The Overseas Railway opened in 1912.

Along with the Overseas Railway, he also planned to build a luxury hotel in Key West exclusively for the passengers of the railway to stay at once they reached the Southernmost point of the USA.

Henry Flagler died before the completion of the hotel, but in 1920 the Casa Marina Waldorf Astoria was opened, sticking to his ‘visions’ as much as possible. The hotel is now operated by Hilton (and open to all guests).

In 1935 a large portion of the railway line was destroyed by a hurricane. The railway was never repaired. Instead the bridge was converted into the Overseas Highway for vehicle traffic instead.  

When the new road bridge opened in the 1980’s, the old rail bridge was no longer used. Two parts of the old bridge were removed to help boat traffic to pass under the bridge, which is what can still be seen today!

4. Big Pine Key

Key Deer

Through a section of the Lower Keys you’ll come across road signs warning you to watch your speed due to the deer population. In some areas the speed limit even lowers at night to help protect the deer!

Key Deer are found only in the Lower Keys (mainly between Big Pine Key and Sugarloaf Key) in Florida. They are the smallest species of white-tailed deer in North America and are classed as endangered.

With all the warning signs around, I was really hoping that I’d be able to see one. I was also terrified driving this stretch because I didn’t want to be responsible for killing one if it ran out in front of my car!

Deciding that the best bet would be to try out the ‘National Key Deer Refuge‘ centre, which turns out to be shut on a Sunday (open Wednesday to Friday, 10am – 3pm). We ended up driving right past it anyway, we carried along one of the ‘back roads’ hoping to come across one.

Just as we went to give up and turn around in the small parking area for the ‘Blue Hole’, there were 2 deer right in front of us just chilling on the path! I got out and stood by my car, just watching it from a little way back.

It decided to come over, have a sniff of me and then trot off onto the other side of the road. It wasn’t bothered by us at all, didn’t run away or anything!

5. Ramrod Key

Boondocks Mini Golf

I have a mini golf obsession, I can’t help it and if I find a course when I travel, I just have to stop and play. So it was no surprise that I stumbled across the only mini golf course in the Lower Florida Keys (and the Southernmost course in the USA)!

Boondocks has been in business for over 25 years, starting life as an ice cream shop.  It now claims to be the largest Tiki Bar in the Florida Keys, with a large food menu (including a ‘pet menu’…a menu FOR pets, you don’t buy/eat pets…), live music EVERY night and of course the mini golf course!  

As of February 2019 Boondocks was home to a Saturday morning farmer’s market.

There is also a concession stand for quick snacks and drinks while playing mini golf.  I had a frozen chocolate dipped Key Lime Pie on a stick!

🕐Boondocks is open 7 days a week.  The mini golf is open from 10am until 10pm with the restaurant and bar opening from 11am until 10pm.

6. Key West

I have a wholeeeee guide purely for all the things to do in Key West which you can find below:

Visiting Key West In December & The Best Things To Do! Florida, USA

Mile Marker 0

If you’ve made the road trip along the Overseas Highway, a good thing to see in Key West is the Route 1 Mile Marker 0.  A lot of places along the Overseas Highway will display their mile marker (MM) location!

Another fun marker is ‘The Southernmost Point of Continental USA’ or the southernmost beach!

Conch Tour Train

The Conch Tour Train also goes by the Casa Marina hotel (‘Henry Flagler’s’ hotel), which is where I first learnt a little bit about the Overseas Railway and the history of Key West.

Hotels in Key West with FREE PARKING

If you’re staying in Key West overnight, the Ibis Bay Beach Resort is a good option for somewhere to stay. The hotel is located JUST over the bridge into Key West, making it really easy to find.

They have free parking and a free shuttle bus with 2 downtown drop off locations that leaves the hotel on the hour.

The hotel has free breakfast, a private beach and a swimming pool. The Stoned Crab restaurant on-site has great food and drinks and they even have free shark feeding a couple of times during the day. Simply meet on the dock and then you can volunteer to feed them!

Read the full Ibis Bay Beach Resort review here.

Key West To Marathon FL

As mentioned at the start of the post, my road trip was part of a 3 day trip. So I did some of these on the drive between Marathon and Key West (Turtle Hospital & 7 Mile Bridge) and then the rest on the drive from Key West to Marathon (Boon Docks, seeing the Key Deer and the hike to Bahia Honda Rail Bridge!).

I stayed in Key West for 2 nights so I had one full day to explore Key West.

My rental car from Miami Airport came with a full tank of gas. It was a hybrid car and driving from Miami to Key West and back, used less than 1/4 tank of fuel.

TRIP PLANNING TOOLS

🏨Find hotels and accommodation on booking.com or hotels.com

🚗Look for car rental with RentalCars.com

🚶🏻‍♀️Want a guide? Check out this tour: Double Dip: 2-Stop Reef Snorkelling Trip with Fury in Key West

🎒Pack these essentials: World Travel Adaptor with USB Ports and TSA Combination Padlocks

📚Read this: The Last Train to Key West by Chanel Cleeton (Fiction)

Inspired by this Marathon to Key West road trip guide?

Pin it for later!