IMSA reveals full 2026 WeatherTech Championship entry

At the annual IMSA State Of The Series conference at Michelin Raceway Road Atlanta ahead of the Motul Petit Le Mans season finale weekend, the WeatherTech SportsCar Championship's full-season and Endurance Cup entry lists were revealed for 2026.

Forty-five entries have been confirmed for the full WeatherTech Championship season across the four categories, with 54 cars set to compete in the five Michelin Endurance Cup rounds, which in 2026 will feature Road America on the schedule for the first time instead of Indianapolis.

The GTP field for 2026 features 11 cars from five manufacturers: Acura, BMW, Cadillac, Porsche and Aston Martin. Gone is the single Lamborghini SC63 operated by Riley, which participated in the Endurance Cup races this year, and Proton's privately entered Porsche 963. Rahal Letterman Lanigan is also missing, as Belgian outfit Team WRT is replacing it at BMW.

The welcome news is that Porsche Penske Motorsport is bringing a pair of cars to the field in the wake of its exit from the FIA WEC's Hypercar class. Cadillac, Acura and Aston Martin, meanwhile, return with the same setups as last year, though Heart of Racing will contest the full season with the Valkyrie, which will make its Rolex 24 debut in January. JDC-Miller Motorsports rounds out the list with a single 963 for the fan-favourite privateer.

The LMP2 field remains strong with 12 full-season cars split among 11 teams.

United Autosports USA is the only two-car team. CrowdStrike Racing by APR, Tower Motorsports, TDS Racing, Era Motorsport, Intersport Racing, Inter Europol Competition, Bryan Herta Autosport with PR1/Mathiasen, Team Tonis, Pratt Miller Motorsports and AO Racing will all enter single cars.

Three of those names are new for the season: Intersport, Bryan Herta Autosport and Team Tonis. Intersport and BHA will receive support from HMD Motorsports and multi-time IMSA LMP2 champions PR1/Mathiasen, respectively. Team Tonis, meanwhile, steps up to a full-time effort for 2026 after making its first WeatherTech Championship start at Road America.

There are two notable omissions from last year. Riley is no longer present after announcing its GTD switch earlier this week, and AF Corse, which completed a partial-season campaign.

The GTD PRO class features eight full-season entries and a further four Michelin Endurance Cup entries. Corvette Racing by Pratt Miller Motorsports and Ford Multimatic Motorsports continue with two-car full-season efforts, joined by single entries apiece from Paul Miller Racing, Pfaff Motorsports, Vasser Sullivan Racing and AO Racing.

Confirmed Michelin Endurance Cup entries come from GTD graduate Triarsi Competizione, Risi Competizione (which had been assisting DragonSpeed in PRO this year), 75 Express and Manthey Racing. Manthey Racing joins IMSA with two entries, split one car apiece between the WeatherTech Championship’s two GT classes, one GTD PRO and GTD, for the Michelin Endurance Cup races. The famous "Grello" Porsche from Manthey will run in PRO for the first time as part of the effort.

Risi Competizione is back on its own, while its 2025 partner team DragonSpeed moves into GTD. Random Vandals, which was rumored to be stepping up to IMSA this year with BMW, is not listed in either GTD class.

One car is missing from the 2025 campaign – Paul Miller Racing's second entry.

GTD is the biggest category in the field again, boasting a 14-car full-season grid with five additional Michelin Endurance Cup entries.

The full-season entries come from 14 teams: Vasser Sullivan Racing, 13 Motorsports, Riley, van der Steur Racing (stepping up from Endurance Cup), Heart of Racing Team, Conquest Racing, DXDT Racing, Wayne Taylor Racing, Winward Racing, Gradient Racing, Inception Racing, DragonSpeed, Turner Motorsport and Wright Motorsports.

Additional entries come from AF Corse, Triarsi Competizione, Lone Star Racing, RS1 and Manthey Racing for the Michelin Endurance Cup.

Riley moves into GTD from LMP2, 13 Motorsports (formerly AWA) has an updated team name, and RS1 steps up from IMSA Michelin Pilot Challenge competition.

DragonSpeed steps to GTD from GTD PRO, while four teams from 2025 are not listed: Korthoff Competition, Cetilar Racing, Magnus Racing and Forte Competition.

“Once again, the quality and quantity of cars and teams are on display for the 2026 IMSA WeatherTech SportsCar Championship season," IMSA President John Doonan said. "All of our GTP, LMP2, GTD PRO and GTD classes are highly represented.

“We know teams have a choice of where to race, and we’re thankful they continue to race in IMSA to provide the best possible sports car racing for our fans.”