Okegawa Sports Land is a circuit that is mainly used for bikes and mini-bikes but also for gymkhana and other events for cars. The length of the circuit is 840 meter and with a lot of tight corners, the overall speed is not so high.
Free driving is only possible for bikes. For driving on this circuit it is needed to join an organised event. On the circuit’s website there is a calendar which lists these events. There is no entrance fee so it always possible to go and look if there is some action ongoing. On Thursdays the circuit is closed though.
The circuit is close to the metropolitan area of Tokyo, about 1 hour driving by car. The closest train station is Okegawa Station which is approximately 1 hour and 20 minutes walking.
A link to the website can be found below:
And a link to the location on Google Maps: