C1 (better known as Shutokou's Inner Circular Route) is a course in the Wangan Midnight Maximum Tune series. It is located in the center of Tokyo where the Tokyo Tower is present. C1 is full of bends and medium to sharp turns and two dangers which are the dividers that are near each other in Ginza. This course should be used for more experienced drivers.
The western parts of C1 Outward are used for Sub-center/Fukutoshin (Shibuya/Shinjuku/Ikebukuro).