Either Kan-Etsu Expressway or Chuo Expressway is convenient from Tokyo.
Both of Toyooka course and Sasai course are located off Ken-O Expressway.
Coming from Kan-Etsu, change to Ken-O at Tsurugashima JCT which is next to Kawagoe IC. Coming from Chuo, change to Ken-O at Hachioji JCT which is next to Hachioji IC.
In case you play at Toyooka course, turn off Iruma IC on Ken-O and take Route 16 toward Kawagoe for a while then you’ll see the course sign on your right.