SKUSA Pro Tour Event SKUSA Pro Tour SummerNationals August 9–11, 2019 Location New Castle Motorsports Park New Castle, IN United States 2019 Schedule SKUSA Pro Tour WinterNationals Mar 1 Fontana, CA SpringNationals May 3 Tooele, UT SummerNationals Aug 9 New Castle, IN Activity Nitro Kart Aug 19, 2019 Three straight weekends of victories for Team Nitro Kart Wins at Stars & Stripes Open Rotax race followed by sweep of Micro Swift at SKUSA SummerNationals. Supertune USA Verified Account Aug 16, 2019 Two Wins, Four Podiums and Two Pro Tour Championships for Supertune Burke wins X30 Junior on Sunday while Leonard and Sorensen go 1-2 in Mini Swift. Speed Concepts Racing Aug 16, 2019 Speed Concepts Racing continues winning streak at New Castle Motorsports Park with Kyffin Simpson Three more podiums in SKUSA competition. PSL Karting Verified Account Aug 16, 2019 Birel ART North America secures eight podiums, one championship at SKUSA Pro Tour Multiple strong runs at New Castle Motorsports Park. OTK Kart USA Aug 16, 2019 Twelve wins and eight championships for OTK at Superkarts! USA SummerNationals 33 podiums added to OTK's North American karting resume. SKUSA Pro Tour Jun 21, 2019 SKUSA confirms SummerNats track configuration The fabled New Castle Motorsports Park will once again play host to the series finale. Johnny Johnson Aug 27, 2018 Rumor: 2019 Pro Tour includes CalSpeed and Utah Motorsports Campus—Confirmed With ProKart Challenge and WinterNationals being one week apart, CalSpeed makes the most sense.