Shift Up Now Athletes Hannah Greenemeier and Hannah Grisham announced this week that their Heart of Racing (HoR) team will switch from competing in Pirelli GT4 America to IMSA Michelin Pilot Challenge for its female-led Aston Martin Vantage GT4 Evo effort, in the 2026 racing season.
“The Hannahs,” who have been paired up in GT4 America for the the past two seasons, brought home a podium finish in 2025 at Circuit of the Americas (COTA) and a pair of top tens at Indianapolis Motor Speedway (IMS).
The duo will pilot the No. 26 Aston Martin Vantage for 2026 in the GS class. The new entry joins HoR’s single-car efforts with its Aston Martin Valkyrie (GTP) and Aston Martin Vantage GT3 Evo (GTD) in the WeatherTech Championship. For the four-hour season opener at Daytona International Speedway, they will be joined by Aston Martin junior driver Mike David Ortmann.
“Racing a full season in the 2026 IMSA Michelin Pilot Challenge is a dream,” said Grisham. “I’m excited to kick off the season at Daytona and take on some iconic tracks that are new for me, like Watkins Glen and Canadian Tire Motorsports Park. I’m really looking forward to continuing to share the car with Hannah Greenemeier. The longer race format is a bit different than what we are used to, but I think it will play to our strengths. I can’t wait for what’s ahead.”
Greenemeier shared in Grisham’s excitement, saying, “I’ve watched the series for many years and it has a lot of talent in it. Being in the IMSA paddock is truly a privilege. It’s great to be back with Hannah [Grisham] for another year, and to have Mike Ortmann with us in Daytona is something I’m incredibly excited for. I’m ready for our first race in Daytona in January; it’s track I have never driven on, but I know that we will get up to speed quickly.”
Greenemeier and Grisham will kick off the season in Daytona, FL for the “Roar Before the Rolex 24,” taking place on January 16-18, 2026 at Daytona International Speedway. Race fans can find the full 2026 IMSA Michelin Pilot Challenge schedule HERE.
