IMSA (International Motor Sports Association) is one of the leading motorsport organisations in the US and promoter of various race series. With the WeatherTech SportsCar Championship, founded in 2013, the organisation continues the long tradition of prestigious sports car races in North America.
Next to its spearhead, the IMSA portfolio also includes the Michelin Pilot Challenge (MPC) and the VP Racing SportsCar Challenge (VPRC), running as support categories of the WeatherTech SportsCar Championship (WTSC). In the IMSA Michelin Pilot Challenge, we are represented on the starting grid with the Mercedes-AMG GT4.
Further information about IMSA can be found on the homepage of the promoter.
IMSA 2025
The IMSA WeatherTech SportsCar Championship race calendar for the 2025 season once again includes a varied mix of sprint and endurance events in the US and Canada. The programme also features three endurance racing classics of the highest international significance: the Rolex 24 At Daytona, the Mobil 1 Twelve Hours of Sebring and Motul Petit Le Mans.
2025 IMSA CALENDAR*
Event
Track
Date
Series
Roar before the Rolex 24
Daytona International Speedway
17 - 19 January
IMSA WTSC (GT3)
IMSA MPC (GT4)
IMSA VPRC (GT4)
Rolex 24 At Daytona
Daytona International Speedway
22 – 26 January
IMSA WTSC (GT3)
IMSA MPC (GT4)
Circuit of the Americas
Circuit of the Americas
28 February – 1 March
IMSA VPRC (GT4)
Mobil 1 Twelve Hours of Sebring
Sebring International Raceway
12 – 15 March
IMSA WTSC (GT3)
IMSA MPC (GT4)
Acura Grand Prix of Long Beach
Long Beach Street Circuit
11 – 12 April
IMSA WTSC (GT3)
Motul Course de Monterey
WeatherTech Raceway Laguna Seca
9 – 11 May
IMSA WTSC (GT3)
IMSA MPC (GT4)
Detroit Grand Prix
Detroit Street Circuit
30 – 31 May
IMSA WTSC (GT3)
Mid-Ohio Sports Car Course
Mid-Ohio Sports Car Course
6 – 8 June
IMSA MPC (GT4)
IMSA VPRC (GT4)
Sahlen’s Six Hours of the Glen
Watkins Glen International
19 – 22 June
IMSA WTSC (GT3)
IMSA MPC (GT4)
Chevrolet Grand Prix
Canadian Tire Motorsport Park
11 – 13 July
IMSA WTSC (GT3)
IMSA MPC (GT4)
IMSA VPRC (GT4)
IMSA Sportscar Weekend
Road America
1 – 3 August
IMSA WTSC (GT3)
IMSA MPC (GT4)
Michelin GT Challenge at VIR
VIRginia International Raceway
22 – 24 August
IMSA WTSC (GT3)
IMSA MPC (GT4)
IMSA VPRC (GT4)
IMSA Battle on the Bricks
Indianapolis Motor Speedway
19 – 21 September
IMSA WTSC (GT3)
IMSA MPC (GT4)
Motul Petit Le Mans
Michelin Raceway Road Atlanta
8 – 11 October
IMSA WTSC (GT3)
IMSA MPC (GT4)
IMSA VPRC (GT4)
*subject to changes.
Rolex 24 At Daytona 2025
The 63rd edition of the Rolex 24 At Daytona will kick off the 2025 North American IMSA WeatherTech SportsCar Championship next weekend. Five Mercedes-AMG GT3s will compete in the GTD and GTD PRO classes at Daytona International Speedway. As the reigning GTD Manufacturers' Champion, we travel to Florida with high ambitions. Our recent successes speak for themselves: class wins in 2023 (GTD PRO) and 2024 (GTD), as well as an impressive one-two in the GTD class in 2021, underline our excellence. We are ready to continue our success story.
The Customer Racing Teams Bartone Bros with GetSpeed and 75 Express are entering the GTD PRO category with one Mercedes-AMG GT3 each. Last year's winners, Winward Racing, will compete in the GTD category. The other two cars will be entered by Korthoff Competition Motors and Lone Star Racing.
A total of 61 cars will take on the challenge in the GTP, LMP2, GTD PRO and GTD classes. Seven practice sessions have already been held at the previous Roar Before the Rolex 24. The Rolex 24 At Daytona will feature three more practice sessions, four-segment qualifying and the race. The 24-hour race will get underway on Saturday at 1.45 pm local time (7.45 CET).
Mercedes-AMG Customer Racing Line-up Rolex 24 At Daytona 2025*:
No
Team
Drivers
Class
32
Korthoff Competition Motors
Maximilian Götz (GER), Kenton Koch (USA), Seth Lucas (USA), Daniel Morad (CAN)
GTD
57
Winward Racing
Lucas Auer (AUT), Indy Dontje (NED), Philip Ellis (SUI), Russell Ward (USA)
GTD
69
Bartone Bros with GetSpeed
Anthony Bartone (USA), Maxime Martin (BEL), Fabian Schiller (GER), Luca Stolz (GER)
GTD PRO
75
75 Express
Maro Engel (GER), Jules Gounon (AND), Mikaël Grenier (CAN), Kenny Habul (AUS)
GTD PRO
80
Lone Star Racing
Scott Andrews (AUS), Ralf Aron (EST), Eric Filgueiras (USA), Dan Knox (USA)
GTD
*subject to last-minute changes.
2024 – GTD class title rain
The 2024 season marked a milestone in the history of Mercedes-AMG Customer Racing: With six out of six possible championships in the GTD classification, it was our most successful season to date in the IMSA WeatherTech SportsCar Championship. Four out of five victories went to Winward Racing. Among other things, the team won the traditional season opener, the Rolex 24 At Daytona, and thus laid the foundation for the GTD team championship in the overall and endurance classifications. The #57 Mercedes-AMG GT3 also won its class at Sebring, Laguna Seca and Watkins Glen. Philip Ellis and Russell Ward ended the year as champions of the GTD classification and won the drivers' title in the IMSA Michelin Endurance Championship together with Indy Dontje. The Korthoff/Preston Motorsports team with Mikaël Grenier, Kenton Koch and Mike Skeen took the fifth victory at Virginia International Raceway. It was the first victory for the Mercedes-AMG Customer Racing Team in this series. In total, we scored five victories, four further podium finishes and three pole positions, which enabled us to secure the GTD manufacturers' championship in both classifications. As a result, we successfully defended our title in the IMSA Michelin Endurance Cup.
2023 - Endurance Cup masterclass
In 2023, our customer sports teams managed to realise impressive achievements in the IMSA WeatherTech SportsCar Championship. In both GTD classes, we won the titles in the drivers’, teams’ and manufacturers’ standings of the Michelin Endurance Cup. The WeatherTech Racing team racked up a total of four race wins during the season with Jules Gounon and Daniel Juncadella, more than any other team in the GTD PRO class. Together with Maro Engel and Cooper MacNeil, they won the Rolex 24 At Daytona. Moreover, the duo, together with Maro, also secured the maiden win for Mercedes-AMG in the prestigious event that is Motul Petit Le Mans. In the sprint races at Laguna Seca and Indianapolis, Jules and Daniel were victorious as well. Next to the three championship titles in the Michelin Endurance Cup, WeatherTech Racing also became runner-up in the GTD Pro class. Korthoff/Preston Motorsport and WINWARD RACING ran one Mercedes-AMG GT3 each in the GTD category. With consistently good results, both customer sports teams significantly contributed to the GTD class drivers’, teams’ and manufacturers’ title wins in the Michelin Endurance Cup.
