The UltraEbre Swim Marathon is a sports event organized around a long distance open water swimming crossing. The crossing has associated a set of activities that will allow participants and companions to know the environment where the event is developed, the Terres de l'Ebre.

We propose the swim as an event of more than one day in order to acclimatise to the territory, to know the last details and to enjoy the Terres de l'Ebre with the participants and the companions.

The crossing

The UltraEbre Swim Marathon is a project of xswim project of crossings of long distances swimming at the Ebro river.

This is a swim crossing of 30 830 meters between the piers of Tivenys and Amposta.

The swim will be under the FINA Open Water rules and will be supervised by swimming officials.

Takes advantage of the ideal conditions of flow rate, water temperature and climate by swimming down the river Ebro.

From Xerta each swimmer will be accompanied by a kayaker who will support him and attend to any need he may have.

The Terres de l’Ebre

We present Terres de l'Ebre as a unique environment to practice sport and also enjoy a gorgeous land full of cultural, historical, culinary and scenic attractions.


The crossing is characterized by a sporting component and another of personal challenge.

Each swimmer must bring a kayaker who will join the race from Xerta. The kayaker will perform tasks of provisioning, piloting and assistance of the swimmer under the established rules.

Each swimmer must bring his own refreshment, to which the swimmer is accustomed.

We encourage teamwork between swimmer and kayaker. We advise training together to improve the provisioning and piloting.

Prepare the trial with a specific plan of physical training, nutrition and mental health.

The river Ebro

It is the most mighty of the Iberian Peninsula.

It is the only major peninsular river that flows into the Mediterranean.

The temperature in July is around 24ºC, 26ºC in August.

The river water is clean and transparent.

As a precaution, you should know of the existence of the black fly.

Real time data


Event Organisation

We propose an official hotel to spend the nights before and after the UltraEbre Swim Marathon with special rates for participants and guests.

In the Official Hotel will take place the reception of the participants, the delivery of material. the briefing and other activities. It will also serve as departure and arrival point for the transfers of the participants on the day of the crossing and as a meeting point for activities outside the hotel proposed by the organization.

From Thursday, participants can pick up the corresponding material from the Official Hotel.

On Friday afternoon there will be a briefing for the participants in the Official Hotel.

On the day of the swim we will concentrate the swimmers and the kayakers and we will transfer them by coach to the corresponding starts. The departure of the swimmers will be at 7 in the morning from Tivenys.

The organization will propose different additional activities for the participants during the previous days to make a more pleasant stay.

Collecting material

The collection of the material for participants will be held at the Official Hotel.

  • Thursday. 16:00 to 20:00.

  • Friday. 16:00 to 20:00.


The transfer of the participants on the day of the swim will be done in coaches from the Official Hotel to the departures of Tivenys for swimmers and Xerta for kayakers and from the Tourist Office of Amposta to the Official Hotel once the swim finishes.

Timing and results management

The race will be electronic chip timing. Each swimmer must wear the chip on their wrist.

The results will be published at Entries → Results

Follow the race. Aim your swimmer!

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