Yokosuka is connected to Tokyo Station by the Yokosuka Line, which takes about 1 hour and 20 minutes.
However, Yokosuka Stadium is located at Oppama Station, which is a little far from Yokosuka Station.
The Yokosuka Stadium is located at Oppama Station, which is a little far from Yokosuka Station. It takes about 40 minutes from Shinagawa Station to Yokosuka Stadium by rapid train on the Keikyu Line.