IMSA SportsCar Championship
The IMSA SportsCar Championship, currently known as the IMSA WeatherTech SportsCar Championship under sponsorship, is a sports car racing series based in the United States and Canada and organized by the International Motor Sports Association (IMSA). It is a result of a merger between two existing North American sports car racing series, the American Le Mans Series and Rolex Sports Car Series. At its inception, the name was United SportsCar Championship, which subsequently changed to IMSA SportsCar Championship in 2016. Rolex SA's Tudor brand was the championship's title sponsor in 2014 and 2015, and since 2016 WeatherTech has served as title sponsor.
| Country | United States Canada |
|---|---|
| Region | North America |
| Inaugural season | 2014 |
| Prototype Classes | Grand Touring Prototype (GTP) & Le Mans Prototype 2 (LMP2) |
| GT Classes | GT Daytona Pro (GTD Pro) & GT Daytona (GTD) |
| Tire suppliers | Continental (2014–2018 Prototype and GTD) Michelin (2014–2018 GTLM; 2019–present all classes) |
| Drivers' champion | GTP: Pipo Derani Alexander Sims LMP2: Paul-Loup Chatin Ben Keating LMP3: Gar Robinson GTD Pro: Ben Barnicoat Jack Hawksworth GTD: Bryan Sellers Madison Snow |
| Makes' champion | GTP: Cadillac GTD Pro: Lexus GTD: BMW |
| Teams' champion | GTP: Whelen Engineering Racing LMP2: PR1/Mathiasen Motorsports LMP3: Riley Motorsports GTD Pro: Vasser Sullivan GTD: Paul Miller Racing |
| Official website | imsa |
| Current season | |
The season begins with its premier race, the Rolex 24 at Daytona, the last weekend of January and ends with the Petit Le Mans, another North American Endurance Cup race, in early October.