The Leader Marathon is a prototype that competed in the Race of the Century,. Two cars of this type managed to survive the attack on the secret Leader Compound in Mexico by The Kamikazes ten months prior. The cars were driven by Bob Cramer and Dan Hawkins. It was the direct competitor to the Vaillante Rush.
Somehow, to participate in a special race organised by Vaillante in Angoulême, Alain Dex was able to obtain one of these cars and compete with it during the Gran Tourismo round. Among its competitors were a Vaillante Commando and a Vaillante Rush, both being cars it raced against during the Race of the Century.
A while later, a modified version of this car shows up in the Hanoi - Saigon rally.
Note: The name of this car shows up for the first time in the datafile obtained by Ruth.
- Album 21: Fight for an Engine
- Album 22: Rush
- Album 50: Challenge on the Remparts
- Album 57: Spurred by Jade