HELLBOUND 666

HELLBOUND 666 – Leipzig, Germany

• Date: September 16–19, 2027

• Location: Leipzig, Germany

• Distances: 666 km

• Event Type: Unsupported ultracycling

HELLBOUND 666 is an unsupported ultracycling event starting and finishing in Leipzig, Germany. Scheduled for September 16–19, 2027, the course covers approximately 666 kilometers and roughly 9,000 meters of elevation gain across Germany and the Czech Republic. The ride is entirely self-supported, with no support vehicles or shortcuts permitted.

From the start in Leipzig, the route travels through Dresden and Saxon Switzerland before crossing into the Czech Giant Mountains (Krkonoše / Riesengebirge). The return journey leads over the roads and climbs of the Ore Mountains (Erzgebirge) back to Leipzig. Final route details and GPX files will be provided to participants prior to the event.

Key climbs on the route include the Graupener Pass (5.6 km at 8.9% average, rising to Mückentürmchen in the Eastern Ore Mountains with maximum ramps of 15%), Burg Kriebstein along Kreisstraße K 8215 in Saxony with pitches reaching up to 25%, and Mount Ještěd near Liberec in the Czech Republic (8.8 km, 569 m elevation gain, peaking at 14.2% near the summit). Other featured sections include the short, steep Waltersdorfer Berg (1.5 km, up to 14%), the 8-kilometer climb through Tiefer Grund near Bad Schandau, and the 1-kilometer ramp along Ulbersdorfer Weg averaging 10–11%.

Registration is managed via Datasport, and further information is available on the official event website.