Mississippi Thunder Speedway, Fountain City, Wis. May 5-6 — USAC AMSOIL National Sprint Cars. Madison Int’l Speedway, Oregon, Wis. May 7 — ASA STARS National Tour. Madison Int’l Speedway, Oregon, Wis. May 7 — NASCAR Cup Series. North Wilkesboro Speedway, North Wilkesboro, N.C. May 16 — High Limit Racing Series. Port Royal Speedway, Port Royal, Pa. May 20 — Lucas Oil Late Model Dirt Series. Fonda Speedway, Fonda N.Y. May 20 — NARC 410 Sprint Car Series. Petaluma Speedway, Petaluma, Calif. May 20 — ARCA Menards Series East. Birch Run Speedway, Birch Run, Mich. May 26-27 — World of Outlaws NOS Energy Drink Sprint Car Series. Charlotte Motor Speedway, Concord, N.C. May 27-28 — Lucas Oil ASCS Sprint Cars. Port Royal Speedway, Port Royal, Pa. May 27 — USCS Sprint Cars. Perris Auto Speedway, Perris, Calif. May 27 — 500 Sprint Tour. Charlotte Motor Speedway, Concord, N.C. May 28 — Formula 1. Charlotte Motor Speedway, Concord, N.C. May 28 — NTT IndyCar Series.

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