O-SEE Challenge

The O-SEE Challenge is a renowned cross-triathlon event held in Germany, attracting around 1,500 participants from across the globe. Established in 2000, it has evolved into a significant international competition, forming part of the XTERRA series. The event features various race formats, including the XTERRA distance, and is celebrated for its vibrant atmosphere that combines sports, culture, and family-friendly activities.

The 2025 edition marks the 25th anniversary of the challenge and will also host the European Championship, promising exciting competitions and memorable experiences for both athletes and spectators. Visit the organization's website for the most recent information.