The IMSA Airbnb Endurance Challenge runs as part of IMSA's VP Racing SportsCar Challenge, but instead features a single 2-Hour long endurance race with our P3 cars and BMW M2 race cars. This championship is new for 2026, and will feature four rounds across the season. // 2026 SCHEDULE // DAYTONA INTERNATIONAL SPEEDWAY - January 16-18 CIRCUIT OF THE AMERICAS - February 27-28 SEBRING INTERNATIONAL RACEWAY - March 6-8 (Airbnb Endurance Challenge Round 1) CIRCUIT OF THE AMERICAS - May 7-9 (Airbnb Endurance Challenge Round 2) O'REILLY AUTO PARTS 4 HOURS OF MID-OHIO - June 5-7 VIRGINIA INTERNATIONAL RACEWAY - June 19-21 (Airbnb Endurance Challenge Round 3) CHEVROLET GRAND PRIX - July 10-12 ROAD AMERICA - August 14-16 (Airbnb Endurance Challenge Round 4) MICHELIN GT CHALLENGE AT VIR - August 20-23 MOTUL PETIT LE MANS - Oct 1-3 ===== IMSA is North Americas premium sports car racing series. Your favorite cars, the latest technology and unmatched fan access at iconic racetracks. If you lik...