Ultimate Guide to the Travessia Lisboa-Cascais 20km Open Water Swim
The Complete Guide to Travessia Lisboa-Cascais 20km Swim Event: Routes, Tips, and Local Insights

Introduction
The Travessia Lisboa-Cascais 20km open water swim is one of the most exhilarating events in the world of swimming, taking place along Portugal's stunning coastline. This guide provides comprehensive details about the event, from race information and preparation tips to local attractions and amenities. Whether you are a participant or a spectator, this guide will ensure you have all the information you need for an unforgettable experience.
Table of Contents
- Event Overview
- Route Details
- Participant Requirements
- Preparation Tips
- Local Attractions and Activities
- Food and Dining Options
- Parking and Transportation
- Accommodation
- Spectator Information
- FAQs
Event Overview
What is the Travessia Lisboa-Cascais?
The Travessia Lisboa-Cascais is a prestigious 20km open water swim, part of the WOWSA Ultramarathon Swim Series. This event begins at Belém Dock in Lisbon and ends at Pescadores Beach in Cascais, offering a challenging yet breathtaking route along the Tagus River and the Atlantic Ocean (Ultramarathon Swim Series) (Swim GP - by 3 Iron Sports).
Key Dates and Times
- Event Date: September 21-22, 2024
- Start Time: 8:00 AM (subject to change)
Registration
Participants must register online at the official Swim Challenge website. Early registration is recommended due to high demand (Ultramarathon Swim Series) (Turismo de Lisboa).
Route Details
Starting Point
The race starts at the historic Belém Dock, known for its picturesque views and rich maritime history. Participants will swim through the Tagus River for approximately 9km before entering the Atlantic Ocean.
Finishing Point
The finish line is at Pescadores Beach in Cascais, a charming coastal town known for its beautiful beaches and vibrant cultural scene (Ultramarathon Swim Series) (Ultramarathon Swim Series).
Course Description
- Distance: 20km (9km river, 11km ocean)
- Tide Flow Speeds: Up to 2.5 m/s (9 km/h) in the Tejo estuary
Water Temperature: Generally between 18-21ºC; wetsuits are recommended if the temperature is below 21ºC (Swim GP - by 3 Iron Sports).

Participant Requirements
Eligibility
Swimmers must have completed an open water swimming event of at least 10km in the last five years. This requirement ensures participants are well-prepared for the endurance needed for the 20km swim (Swim GP - by 3 Iron Sports).
Mandatory Equipment
- Swim Cap (provided by organizers)
- Goggles
- Wetsuit (if water temperature is below 21ºC)
- Timing Chip (worn on the wrist)
- Support Kayak (each swimmer must be accompanied by a kayaker) (Swim GP - by 3 Iron Sports).
Preparation Tips
Training
Participants should follow a rigorous training regime that includes endurance swimming and practice with their support kayaker. Proper hydration and nutrition are crucial, with recommended intake every 20-30 minutes during the race (Swim GP - by 3 Iron Sports).
Race Day Preparation
- Arrive early to acclimatize and prepare.
- Attend the mandatory race briefing.
- Ensure all equipment is in order and tested.
Local Attractions and Activities
In Lisbon
- Belém Tower: A UNESCO World Heritage site near the starting point.
- Jerónimos Monastery: Another historical site offering stunning architecture.
- MAAT (Museum of Art, Architecture, and Technology): For art and culture enthusiasts (Turismo de Lisboa).
In Cascais
- Cascais Marina: A beautiful spot for relaxing and enjoying the sea views.
- Boca do Inferno: A natural chasm offering spectacular ocean views.
Cascais Market: A great place to experience local cuisine and buy souvenirs (Turismo de Lisboa).
Food and Dining Options
Lisbon
- Pastéis de Belém: Famous for its traditional Portuguese custard tarts.
- Time Out Market: A food hall offering a variety of local and international dishes.
Cascais
- Mar do Inferno: Renowned for its seafood dishes.
- Santini: A must-visit for the best ice cream in Portugal (Turismo de Lisboa).
What is the date and time of the Travessia Lisboa-Cascais 20km swim event?
The Travessia Lisboa-Cascais swim event will take place on September 21-22, 2024. The main 20km race starts at 8:00 AM on September 21 (Ultramarathon Swim Series) (Ultramarathon Swim Series).
Where does the race start and finish?
The race starts at Belém Dock in Lisbon and finishes at Pescadores Beach in Cascais. This route covers approximately 9km in the Tagus River and 11km in the Atlantic Ocean (Swim GP - by 3 Iron Sports) (Ultramarathon Swim Series).
What are the requirements for participating in the 20km swim?
Participants must have completed an open water swimming event of at least 10km in the last five years. Each swimmer must be accompanied by a support kayaker (Swim GP - by 3 Iron Sports) (Outdoor Swimmer Magazine).
What equipment is required for the race?
Mandatory equipment includes:
Swim cap (provided by organizers)
Goggles
Wetsuit (if water temperature is below 21ºC)
Timing chip (worn on the wrist)
Support kayak (Swim GP - by 3 Iron Sports).
Is there parking available at the start and finish points?
Yes, parking is available at both Belém Dock in Lisbon and Pescadores Beach in Cascais. However, it is advisable to arrive early as parking can be limited, especially near the finish line in Cascais (Turismo de Lisboa).
How can I register for the event?
You can register for the event on the official Swim Challenge website. Early registration is recommended due to high demand (Ultramarathon Swim Series) (Turismo de Lisboa).
What should I do to prepare for the race?
Preparation tips include:
Follow a rigorous training regime that includes endurance swimming.
Practice with your support kayaker to ensure smooth communication and coordination.
Ensure proper hydration and nutrition before and during the race.
Attend the mandatory race briefing and arrive early to acclimatize (Swim GP - by 3 Iron Sports) (Ultramarathon Swim Series).
What local attractions can I visit near the start and finish points?
In Lisbon, you can visit:
Belém Tower: A UNESCO World Heritage site.
Jerónimos Monastery: Known for its stunning architecture.
MAAT: The Museum of Art, Architecture, and Technology.
Parking and Transportation
Parking
- Belém: Ample parking is available near the starting point, with prices varying depending on the duration of stay.
- Cascais: Parking near Pescadores Beach can be limited, so early arrival is advised (Turismo de Lisboa).
Public Transportation
- Train: Regular trains run between Lisbon and Cascais, providing a scenic and convenient travel option.
- Bus: Local buses are available, but may be slower compared to the train (Turismo de Lisboa).
Accommodation for the Travessia Lisboa-Cascais 20km Open Water Swim Event
Stay with Portugal Portfolio
For participants and spectators of the Travessia Lisboa-Cascais 20km open water swim, Portugal Portfolio offers the best vacation rentals to ensure a comfortable and convenient stay. Our properties are located near both the start and finish points, providing easy access to the event and local attractions.
Why Choose Portugal Portfolio?
- Prime Locations: Our vacation rentals are situated in the most desirable areas of Lisbon and Cascais, offering proximity to the event venues and local attractions.
- Luxury and Comfort: Enjoy the comfort of our fully furnished properties, equipped with modern amenities to make your stay relaxing and enjoyable.
- Variety of Options: We offer a range of accommodations from cozy apartments to spacious villas, catering to different group sizes and preferences.
- Local Expertise: Our team provides personalized recommendations and support, ensuring you make the most of your visit.
Featured Properties
In Lisbon
- Belém Riverside Apartment: Located near the historic Belém Tower and the starting point of the race, this stylish apartment offers stunning river views and easy access to cultural landmarks.
In Cascais
- Cascais Oceanfront Villa: Just a short walk from Pescadores Beach, this luxurious villa provides a perfect retreat with panoramic ocean views, ideal for relaxing after the race.
- Cascais Central Apartment: Conveniently located in the heart of Cascais, this property is close to dining, shopping, and the race finish line, making it an excellent choice for participants and spectators alike.
Book Your Stay With Us
Ensure a memorable and stress-free experience by booking your accommodation with Portugal Portfolio. Visit our website to explore our properties and secure your stay for the Travessia Lisboa-Cascais 20km swim event.
Spectator Information
Viewing Points
- Belém Dock: Excellent for watching the start of the race.
- Pescadores Beach: Ideal for seeing the finish and celebrating with the participants (Ultramarathon Swim Series) (Outdoor Swimmer Magazine).
Tips for Spectators
- Arrive early to secure good viewing spots.
- Bring binoculars for a better view of the swimmers.
- Be prepared for changing weather conditions.
Conclusion
The Travessia Lisboa-Cascais 20km swim is a remarkable event that combines athletic endurance with Portugal's scenic beauty. Whether you are a participant or a supporter, this guide provides all the essential information to ensure a successful and enjoyable experience. Don't miss this opportunity to be part of one of the most exciting open water swimming events in the world.