🏳️ William Alsup

William Alsup is a semi-professional endurance racing driver competing in multiclass championships across North America. He races production-based and GT4-class cars shared with co-drivers, most recently for Retro Rockets Racing in the Zenith Racing Series.[1]

Alsup has spent nine seasons in indexed racing from 2017 onwards, primarily in American Endurance Racing, where he has taken seven wins and 18 podiums across 48 starts in Classes 2, 3 and 4. He moved to the Zenith Racing Series in 2026, joining Retro Rockets Racing in its ZR2 class, and has won once and taken four podiums from eight rounds raced so far; he currently sits third in the championship standings with more rounds to come.[2]

In American Endurance Racing, Alsup runs closely with club-level regular Carl Becker but typically finishes behind Alex Rubenstein, a three-time Class 4 champion in the series with 130 starts there. He has beaten professional-graded drivers including David Russell, a Supercars Championship and Bathurst 12 Hour regular, in their meetings.