2016 NORCAL GP Marathon Series REP Racing and GOT present the annual GP Marathon Races happening March – May. All skill levels welcome. Rider friendly. A great place to get your start on the race track. Click here to get all the details. offroad2016-04-05T15:46:14-08:00 Share This Story, Choose Your Platform! FacebookTwitterLinkedInRedditGoogle+TumblrPinterestVkEmail Leave A Comment Cancel replyYou must be logged in to post a comment.