TRIP OVERVIEW
Trip Dates
04 Oct - 10 Oct |
Full
|
11 Oct - 17 Oct |
Private
|
18 Oct - 24 Oct |
Full
|
25 Oct - 31 Oct |
3 Spaces
|
04 Apr - 10 Apr |
5 Spaces
|
11 Apr - 17 Apr |
Available
|
18 Apr - 24 Apr |
Available
|
03 Oct - 09 Oct |
Available
|
10 Oct - 16 Oct |
Available
|
17 Oct - 23 Oct |
Available
|
In a group of 5 or more? We'll help you to plan your trip
Tour Highlights
Swim among over 300 otherworldly limestone islets and karst islands which jut up dramatically from the water.
Discover world-renowned Vietnamese culture and cuisine as you delve deep into this fascinating part of the world.
Enjoy an unmissable walk up to Hospital Cave, located in the National Park, which was built as a bomb proof hideout as well as a hospital for Vietnam soldiers.
Relax at the end of each day at the Flamingo Cat Ba Beach Resort – a beautiful modern addition to this prehistoric landscape.
Discover the natural beauty of Lan Ha Bay on this truly unique swimming holiday in one of Vietnam’s most picturesque locations. Situated adjacent to Ha Long Bay, Lan Ha Bay is a much quieter location, which spans an area of more than 7,000 hectares – filled with bays and coves and scattered with 300 towering limestone islets and karst islands.
Often referred to as ‘Ha Long Bay’s Twin,’ Lan Ha Bay is ideal for open water swimming as it has much less boat traffic. The largest island in Lan Ha Bay, and our base for the duration of our trip, is the rugged, jungle-filled Cat Ba Island, famous for its history during the Vietnam War.
Due to the runoff from the lush, green islands which make up this beautiful corner of the world, water clarity is sometimes lower than in other open ocean locations, however, it is still suitable for swimming.
Our accommodation for the week is the stunning Flamingo Cát Bà Beach Resort situated in it’s own private bay. The resort offers a spa, private beach, infinity pools, 3 large restaurants, 2 pool bars and even its very own sky bar overlooking the bay.
Who is this trip for?
This trip is designed for those who want to combine spectacular swimming among the karst islands and limestone outcrops of Lan Ha Bay with optional hikes around the area’s dramatic landscapes and a taste of Vietnamese culture. Swims include a mix of coastal exploration and point-to-point crossings. The geography of the bay means it is usually possible to find sheltered waters to avoid any choppiness.
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 2.5km. 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.
What's included?
- Fully guided swimming holiday (swimmers only)
- Professional swim guides and full safety escort on all swims (swimmers only)
- Six nights' accommodation
- All breakfasts
- All lunches (swimmers only)
- ABTOT Protection, in accordance with our terms and conditions.
- Transfer from Hanoi Opera House to our accommodation on Cat Ba Island on Day 1
- Transfer from Cat Ba Island to Hanoi Opera House on Day 7
What's not included?
- Travel to and from the start of the trip
- Evening meals
- Drinks and additional activities
Group of 5 or more?
If you're travelling with a group of friends, family or swim buddies, speak to our Group Travel team to get tailored advice, special pricing and discounts, and early access to new trips and departures.
GROUP TRAVEL SERVICE>
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
Map
Location Summaries
Trip Grading
Trip Information
Getting There
Accommodation
Travel Advice
Flexible Booking
Related Trips
Photos (click to enlarge)

Calm seas and secluded beaches in La Han Bay (2025)

SwimTrekkers in Vietnam (2025)

Happy SwimTrekkers with beautiful backdrops in Vietnam (2025)

swimming in Vietnam Lan Ha Bay

Exploring Lan Ha Bay in 2023

Anchored in Vietnam

Vietnam swimmers (2024) by Tung

2022 SwimTrek in Lan Ha Bay

Lan Ha Bay Swimming Holiday

SwimTrekkers on the beach in Vietnam

view of the bay from the traditional Vietnamese boat

Lush vegetation on the islands of Lan Ha Bay

the group heading out on a swim
A great place for a swim!

Vietnam, Ha Long Bay

the group and Graham

our boat pilot on a traditional boat

Vietnam, Ha Long Bay

Vietnam, Ha Long Bay
