If you knew where to show up, but would only discover what was expected of you once you stood at the starting line, would you sign up?
On Sunday, 22 November 2026, The Experiment invites runners to Antonis Tritsis Park for a different kind of running challenge. The distance is approximately 5 kilometres. What happens between the starting line and the finish remains a secret.
Organiser Robert Konstantinos Karalis invites those who are ready to try something new to step up to the starting line without knowing exactly what awaits them. If the idea of signing up before finding out what you’re getting into intrigues you, this is your challenge. The first revelation comes at the starting line.
Due to high demand, the number of available places has increased to 30. Registrations close on Tuesday, 10 November 2026, and selected participants will be notified by email on Thursday, 12 November 2026.
