High-speed rainbow March 8, 2013 8:11 am by MyWalworthadmin Views: 5 BMX racers compete on an indoor dirt track at the Walworth County Fairgrounds last Sunday. Additional races will be held on March 10, 16, 17 and 24. The races are open to the public and young racers are invited to participate. For more information call (262) 623-8955. BMX racers compete on an indoor dirt track at the Walworth County Fairgrounds last Sunday. Additional races will be held on March 10, 16, 17 and 24. The races are open to the public and young racers are invited to participate. For more information call (262) 623-8955. Share this:TwitterFacebookLinkedInPinterestEmailPrint