Challenge yourself at TRIMORE SwimRun Hydra, one of the most demanding yet rewarding sporting events in Greece, returning to the picturesque island of Hydra in Attica, the Greater Athens Region, from October 31 to November 2, 2025. This three-day event offers an unforgettable multisport experience, blending off-road running with open water swimming in a stunning natural setting.

Participants compete exclusively in pairs, tied together with an elastic rope, alternating between swim and run segments across Hydra’s rugged terrain and clear waters. With distances ranging from 12.8k (Initiation) to 38.7k (Advanced), there’s a challenge for every endurance level.

The event is part of a nationwide tour promoting athleticism, nature, and family-friendly participation, and Hydra’s charming car-free environment and dramatic coastline make it the ideal backdrop for a SwimRun race like no other.

Whether you’re racing, cheering from the sidelines, or exploring the island, TRIMORE SwimRun Hydra 2025 is a celebration of athletic spirit, natural beauty, and pure adventure.