California ProKart Challenge returns to action in 2020 California ProKart Challenge returns to action in 2020 Bas Kaligis / Tuesday, June 23, 2020 0 1261 Article rating: No rating The ProKart Challenge returned trackside on June 12-14 with the second and third rounds contested on the kart track at the Willow Springs International Raceway. Racing for Superkarts! USA had been shut down since the March weekend of the SKUSA Pro Tour WinterNationals in New Orleans, but welcomed triple-digit numbers for each of the two rounds of regional racing program under almost-perfect weather conditions at in Rosamond, California. Attendees followed social distancing guidelines to help keep officials and competitors safe while enjoying the three-day event. Read more