Seacrest District is a course first featured in Ridge Racer 6, and returned in Ridge Racer 7 and Ridge Racer Slipstream in an update. It's located in the Seacrest area, home to Ridge State's own beach resort.
The course runs through a marina, a residential complex and a cliff. It starts off fairly wide, but narrows once the player cleared the tunnel. A small crest is present just before a corner, so players have to pay attention when they're engaging the nitrous booster(s).