According to the official information from Kanagawa Prefecture, all roads will be good and open for cars and bicycles tomorrow.
Because of the monster typhoon in Oct. some roads were closed due to land slides. The local government has tried to recover the damaged roads and it looks that the last one will be open tomorrow. It is a very good news before the new year holiday.
In Japan, you can still ride a bicycle even in winter unless the road surface is frozen. You are advised to check the weather forecast before departure. If you send us an inquiry, we will try our best to return precise information.