Sea— Portugal

Oeiras Open Water Race 2026

May 30, 2026
Last edition date
Distances from 750m to 3km
3rd edition👥Crowded
Awaiting confirmation of the next edition

About the race

The Oeiras Open Water Race is an open water challenge held at Praia de Caxias, in Oeiras. The event features distances of 750, 1,500, and 3,000 meters, promoting open water swimming for participants of all levels. The event is organized by the Clube Olímpico de Oeiras with the support of the Câmara Municipal de Oeiras and technical organization by HMS Sports.

Course

750 m

1 lap course starting and finishing on the sand at Praia de Caxias.

1.5 km

1 lap course starting and finishing on the sand at Praia de Caxias.

3 km

2 lap course starting and finishing on the sand at Praia de Caxias, with a mandatory exit to the beach between laps.

Awards

  • Age group awards

Trophies for top 3 absolute male/female and age group winners. Team classification for 1500m and 3000m.

Aid stations

Aid stations
1

Solid and liquid refreshment kit provided at the finish line.

Previous editions

Useful info

Minimum age 15 years. Wetsuit mandatory if water <18°C, optional if ≥18°C. Race kit (swim cap, chip, t-shirt) can be picked up on the day of the event. Wave starts (8 athletes every 10s). Chip mandatory on the ankle. Buoyancy aids prohibited. Registration deadline May 29, 2026.

How to get there

Lisbon Airport (LIS) 25km away. Train: Cascais line from Cais do Sodré station to Oeiras or Santo Amaro (10 min walk). By car: A5 or N6 (Marginal) with parking available at the Marina de Oeiras. Easy access via taxi/Uber from the airport (approx. 25-30 min).

✈️ Search flights to LIS

Oeiras Open Water Race 2026

Where to stay

Oeiras offers a refined selection of lodging options, ranging from charming guesthouses housed in traditional Portuguese dwellings to boutique hotels located near the harbor. Visitors can expect to find mid-range options starting around 90–120 EUR per night, while more exclusive coastal properties can range from 150 to 250 EUR depending on proximity to the beach. For a more direct connection to the Atlantic breeze, there are several well-equipped local stay options that cater specifically to sports travelers.

Things to do nearby

The weekend is an ideal window to explore the area's rich archaeological and leisure landscape. Beyond the race, you can visit the ancient Chalcolithic settlement of Castro de Leceia to see fortified dwellings dating back to 2800 B.C., or indulge in local wine and seafood tastings in the historic center of Oeiras. For those looking to stay active, the coastline is perfect for guided kayak and SUP excursions that offer a unique vantage point of the coastal fortifications. You can find a full list of activities here.

Swimmers

What to see around

1. Oeiras Maritime Promenade (running/cycling paths). 2. Forte de São Julião da Barra. 3. Historic center of Cascais and Boca do Inferno. 4. Queluz National Palace. 5. Carcavelos beaches (surfing and relaxation).

Comments

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