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IMSA Expands Road America Feature to Six Hours With 54‑Car Field

The change shifts the race into the Michelin Endurance Cup and forces teams to prioritize driver swaps, tire and fuel strategy, traffic management, pit execution

Overview

  • IMSA and Road America confirmed a six-hour Motul SportsCar Endurance Grand Prix scheduled for July 30–August 2, 2026, with the headline race taking place on Sunday.
  • A stacked 54‑car entry list across four classes has been published, listing 11 GTP, 12 LMP2, 12 GTD Pro and 19 GTD cars and several endurance-only or returning teams.
  • The longer format increases strategic demands by making driver changes, pit stops, tire selection and fuel strategy decisive over six hours of multi‑class traffic.
  • Flag-to-flag streaming of the six-hour race is set for Peacock, and the event is the fourth and penultimate round of the 2026 IMSA Michelin Endurance Cup.
  • The weekend adds a full support card including the IMSA Michelin Pilot Challenge, Porsche Carrera Cup North America and Lamborghini Super Trofeo, expanding on-track action for fans and teams.