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Mark Drennan competed in the IMSA Pilot Challenge with Freedom Autosport, making two career starts without recording a win or a podium finish. His time in the series reflects a limited sample of appearances rather than a sustained campaign, and he closed his career with no championships to his name.[1]
In the 2026 season, Drennan took part in two rounds for Freedom Autosport, finishing 79th in the standings with no wins or podiums to show for his efforts. His Racer Rating stands at 1,384, placing him 9998th among active drivers on a scale where the sport's elite competitors reach figures between 10,000 and 11,500. Drennan is now listed as retired from competition.
SOURCES: [1] INDEXED RACE CLASSIFICATIONS