The aim of this endurance race, rather than to complete a set number of laps in the fastest time, is to complete the most complete laps in the 4 hour period. The race ends at the end of the first lap completed after the checkered flag falls (4 hours + 1 lap). Winning the Roadster 4hr Endurance awards the player a Mazda RX-7 LM Race Car. The event, which takes 4 hours to complete in A-Spec mode can be won in just over 1 hour and 20 minutes if the player uses B-Spec. File:Tsukuba Circuit.jpg