The following are known GameShark Codes for Grid Runner on Sony Playstation (PS1).
These codes were also known as Action Replay Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

• Easy Win as Player-1
  3009D4A2 000F
  E009D4A2 000F
  3009D3DF 000E
• First Person to a Flag Wins
  3009D4A2 0001
• Infinite Bonus Level Time
  800912B8 FFFF
• Infinite Magic
  8009D3D2 000F