🇺🇸 Hannah Grisham

Hannah Grisham is an FIA Silver-graded driver competing in national multiclass endurance racing. She races a GT4-level production-based sports car for Heart of Racing Team in the IMSA Pilot Challenge, and competes in GT4 cars for the same team in GT4 America. Her racing career spans a decade, from 2016 onwards, and her record centres on a lengthy period in NASA racing, where she competed in Mazda Miata machinery.[1]

Grisham took 12 wins and 38 podiums across 65 NASA starts between 2016 and 2021, establishing herself as a front-running competitor in that series. She stepped up to graded sportscar racing in 2023, joining GT4 America's Am and Silver classes; over two full seasons she has recorded 2 wins and 6 podiums from 28 starts. A 1-win, 2-podium campaign in Lamborghini Super Trofeo NA in 2024 broadened her experience, and she moved to the IMSA Pilot Challenge in 2026, where she has taken two poles from her first seven starts. She has also contested the 24H Series in its GT3 class, where she finished on the podium in her sole completed race.[2]

In GT4 America and endurance sportscar racing, Grisham typically runs mid-field among a grid mixing amateurs and Silver-graded professionals with graded competitors. She has finished ahead of Guilherme Salas, an established professional driver with experience in international sportscar racing, twice in the IMSA Pilot Challenge. She regularly races against Ryan Pond, a competitor from her NASA era, and usually finishes in front of Steven Champlin. Her early results in the IMSA Pilot Challenge this season include three consecutive pole positions.