Welcome to Vienna
The Vienna O Challenge launched in 2019, with the idea to create an international event open for everyone, in challenging areas, and fun to be part of. Thanks to everyone who has participated in the first five editions; 2025 with 400 participants from more than 20 countries. See you at the next Vienna O Challenge!
Erik Nilsson Simkovics
Event Director
Volunteer & be part of the Event Team!
Do you want to be part of our team & create an international sport event? Join the team of volunteers :)
