Mount Akagi (赤城山 Akagi-yama) is a mountain in Gunma Prefecture, Japan.
In Initial D, Akagi serves as the home course of the Akagi RedSuns. Akagi is where the battle between Takumi and the Kyoichi was held which resulted in Takumi blowing up his AE86's engine in Second Stage. Kyoichi later attempted to beat his past rival Ryosuke in the same place, but was unsuccessful after Ryosuke managed to overtake him on the last corner. Keisuke's impromptu battle with Wataru is also held here.