100 days. 100 HYROX Pro Races. No rest day. With HYROX100, athlete and fitness coach Simon Gronau completed one of the most extreme endurance challenges ever attempted in Germany — certified as an official world record by the Rekord-Institut für Deutschland (RID) in July 2026. We designed the logo of the project: the face of a challenge that was broadcast daily on YouTube, followed across social media, and celebrated at iconic locations like the former Berlin-Tempelhof airport.

© 100 Tage. 100 HYROX / Simon Gronau