The Tatra 603-2 B5 Marathon is a specialized racing version of the Czechoslovakian Tatra 603 luxury sedan, designed for long-distance endurance racing during the 1960s. It is renowned as a high-performance "oddball" endurance car known for overcoming understeer issues through expert engineering and for its air-cooled V8 engine.

The model is notably associated with the "Marathon de la Route" endurance race.

The car remains a highly collectible and admired piece of Tatra history, often discussed for its balance of luxury sedan origins and unexpected high-performance rally capability. on the engine and suspension Specific race results for the 1966 "Marathon de la Route"? Images/videos of the car in action? AI responses may include mistakes. Learn more

In B5 racing specifications, these vehicles were highly successful, winning 60 out of the 79 races they entered.

Due to its unique status, this car is popular in classic car racing circles, often appearing at events like the Edda Cup . A 1:43 scale resin model by AutoCult was created to represent the 1966 Marathon de la Route participant, according to Facebook posts by toycargeek .