TRIP OVERVIEW
Trip Dates
28 Feb - 06 Mar |
Available
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07 Mar - 13 Mar |
Available
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14 Mar - 20 Mar |
Available
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18 Apr - 24 Apr |
Available
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25 Apr - 01 May |
Available
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02 May - 08 May |
Available
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In a group of 5 or more? We'll help you to plan your trip
Tour Highlights
Swim the fresh water ‘Lagoon of Seven Colours’ and discover the largest freshwater microbialite reef in the world
Ride rapids that flow among ancient ‘stromatolites’, offering some of the earliest evidence of life on earth
Explore your tropical surrounds, criss-crossed by rivers and dotted with water-filled cenotes
Relax after your swims in the lakeside town of Bacalar and visit the 18th-century fort – home to a piracy museum filled with colonial-era weapons and artifacts
Not far from the Belize border, in southeastern Mexico, the town of Bacalar sits in an idyllic spot on the shores of Lake Bacalar. Also known as the ‘Lagoon of Seven Colours’, these stunning waters blend hues of rippling blue and turquoise. The lagoon is fed by an underground river, which flows from the world’s largest system of water caves and tunnels, snaking across the Yucatan Peninsula.
Away from the crowds, this is the perfect setting to launch a new SwimTrek adventure. You will learn how the authorities protect the lagoon and have time to explore our tropical surrounds as well. The forested landscape is crisscrossed by rivers and dotted with cenotes that clear holes in the lush canopy.
During our swims, we will uncover the lagoon’s many secrets, peering into clear depths to find the largest freshwater microbialite reef in the world. Below your strokes, you will also see calcareous mounds called ‘stromatolites’. These living fossils have existed for roughly 3.5 billion years and offer some of the earliest evidence of life on earth.
The lakeside town of Bacalar has many charming attractions and opportunities to enjoy traditional Mexican culture and cuisine. There’s plenty to do out of the water when we rest and relax. You can even take a stroll to an 18th-century fort called the Fuerte de San Felipe. Inside, you will find a piracy museum with colonial-era weapons and artifacts.
Who is this trip for?
For those who want to discover the wilder side of Mexico as we dive into multi-coloured lagoons, seek out hidden cenotes and stroll the lakeside town of Bacalar and want to enjoy swimming in this fresh water lagoon
Swimmers should have a basic understanding of open water swimming and be capable of completing the average swim distance and average daily swim distance (over the course of two swims) prior to the start of the trip.
The average swim distance is around 2km. The average daily swim distance is around 4km.
We have given this trip a ‘Moderate’ grading. Most swimmers comfortable in the open water will be able to take part and enjoy one of these trips.
Are you a Pioneer?
We are excited to share our entirely new Bacalar - Mexico trip for an action-packed 2026 of adventures. Our first departures will be Pioneer Departures. These are perfect for those who want to get out first to experience the relatively unexplored waters that await us. You will have the opportunity to explore the destination in-depth with an amazing group of swimmers, opening our eyes to the possibilities for future trips.
What's included?
- Swim guides and full safety escort on all swims (swimmers only)
- All entrance fees
- Six nights’ accommodation
- All breakfasts
- Lunches on swim days including private chef (swimmers only)
- Full ABTOT Financial Protection
What's not included?
- Lunch on the day off
- Travel to and from the start of the trip
- Evening meals
- Overnight taxes
- Drinks and additional activities
Sample Trip Itinerary
Please note that the below daily itineraries are an example of the swims that may take place during your trip, however, actual swim locations and distances will vary according to local weather and swim conditions. Your SwimTrek guides and local boat pilots will determine the most suitable swim locations each day and will communicate the plan with all guests as soon as possible.
Trip Schedule
Day 1
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Location Summary
Trip Grading
Trip Information
Getting There
Travel Advice
Related Trips
Photos (click to enlarge)

Cenote Negro in Bacalar

Stromatolites lagoon

Poolside at Hotel Sur

Exploring Bacalar Lagoon

Hammocks hanging in Bacalar

Seven-coloured lagoon and tropical plants in Bacalar

Swimming in Bacalar Lagoon

Looking over the hotel pool

The waterfront fort in Bacalar

The pool at Hotel Sur in Bacalar

Your base at Hotel Sur

Local tropical shallows near the hotel
