“Enjoy together, experience together”

O-See Challenge

August 14-16, 2026

The O-SEE Challenge is Germany's most prestigious cross-country triathlon – swimming in Lake Olbersdorf, mountain biking through the Zittau Mountains, and trail running through the surrounding countryside. Around 1,500 athletes from Germany and abroad compete here on one of the most challenging and beautiful cross-country triathlon courses in Europe, accompanied by a friendly, sporty atmosphere.

Malevil - cup

June 13, 2026

The Malevil Cup is a high-level, internationally competitive mountain bike marathon with distances ranging from 30 to 100 km, suitable for both amateur and competitive riders. The race is part of the UCI calendar (Category C1) and offers impressive natural trails through forests and hills with country navigation, panoramic views, and some challenging climbs.