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Swim Challenge Cascais Launches 20 km to Join Ultramarathon Swim Series

The 11th edition of the Swim Challenge Cascais is introducing the Travessia Lisboa Cascais, a 20km open water race that promises to be a significant addition to the world of open water swimming. This year’s Swim Challenge Cascais starting on September 23, 2023 is its most international event ever with 27 nations represented.

The Travessia Lisboa Cascais starts from Belém Dock in Lisbon, culminating at Pescadores Beach in Cascais. Participants will cover approximately 9km in the river and 11km in the ocean. The tide flow speeds within the river can reach up to 2.5 m/s (9 km/h), especially in the Tejo estuary, making it a challenging swim.

The event’s organizers have crafted this year’s challenge as a nod to the past. They’re evoking the spirit of the 1906 Lisbon – Cascais competition, a time when Arthur Rumsey’s triumphant swim brought him face to face with King D. Carlos. Later, others followed with crossings from Lisbon and the River Tagus, such as Baptista Pereira, Primo Ferreira, José Freitas.

A Weekend of Challenge

Apart from the 20km race on September 23rd, there’s also a 10km marathon starting from Praia da Torre in Oeiras, concluding at Praia dos Pescadores in Cascais. The LIDL Swim Challenge continues on September 24th, offering a range of races, including the 3.8km, 1.9km, 1km, and a new 5km race. These races will be in a closed-circuit format at Praia dos Pescadores, turning the bay into a spectator’s arena.

Ultramarathon Swim Series

The 20 km Travessia Lisboa Cascais is now part of the WOWSA Ultramarathon Swim Series joining the most iconic ultra-endurance races in the world – Trans Tahoe, Traversée du Lac St. Jean and Maratona del Golfo Capri -Napoli. Next year Lisboa Cascais will be the last and decisive race on the circuit, hosting the consecration of the champions.

Jorge Paulo Pereira, the founder of Swim Grand Prix stated:

“Dear swimmers, this moment is yours. Enjoy every stroke in the sea you master, the glory of reaching the finish line, happy memories that will last forever. Let’s conquer the sea, leave the land to others.”

The Course

The Elite Swimmers

Start List

Vitor MedeirosPortugal
Joao MartinsPortugal
Frederico SantosPortugal
Luis SarmentoSpain
Eduardo FerreiraPortugal
Neville SuzmanPortugal
Ana CardosoPortugal
Mikel GarcíaSpain
Filipe HortaPortugal
João SilvaPortugal
José FerreiraBrazil
Mayra SantosPortugal
Nadia BahtaneMorocco
Ana PivetiBrazil
Andrea MartinSpain
Tiago DurãesPortugal
Pedro NevesPortugal
Thais Sant’anaBrazil
Barbara HuertaChile
Anna NummiSweden
Nathalie PohlGermany
Fernando PinoSpain
André SantosPortugal
Sabrina PeronItaly
Aitor GonzálezSpain
Janne HaapaniemiFinland
Marie-pierre JacqueminFrance
Jesus RamosSpain
Ira UusoksaFinland
Miguel ArrobasPortugal
Iñaki AznarSpain
Juan RodriguezSpain
Khadija BouchtaouiMorocco
Juan ReznakSpain
Javier CostasSpain
Yana LohvinenkoUkraine
Mauro InacioPortugal
Marco VantaggiatoItaly
Jorge FariaPortugal
Cristobal FuentesSpain
María BagüésSpain
Patricia FernándezSpain
Catarina WinklerBrazil
Jorge RabanalSpain
Alberto DiazSpain
João MoutaPortugal
Pedro GarciaPortugal

Event Date: September 23, 2023
Location: Lisboa – Cascais, Portugal
Distance: 20 km
Organized by: 3Iron Sports
Race Director: Jorge Paulo Pereira
Race Website:

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