RACER Logo
Grand touring prototype (gtp)

Most Popular

Ahead of Bourdais’ Cadillac goodbye, he knows his window for pro racing is closing
FIA WEC
Ahead of Bourdais’ Cadillac goodbye, he knows his window for pro racing is closing
14h ago
Question of the week: Should Cadillac put Colton Herta into an F1 seat next year?
Formula 1
Question of the week: Should Cadillac put Colton Herta into an F1 seat next year?
1d ago
Best/Worst: Mario Andretti
IndyCar
Best/Worst: Mario Andretti
2d ago
IndyCar teams receive order forms for IR-28 chassis
IndyCar
IndyCar teams receive order forms for IR-28 chassis
1d ago
Norris times final run to perfection to top marathon Sao Paulo GP qualifying
Formula 1
Norris times final run to perfection to top marathon Sao Paulo GP qualifying
5h ago
IMSA class guide

Series Guides - Sportscars

IMSA class guide

By RACER Staff - Aug 29, 2026, 4:41 PM ET

The IMSA WeatherTech SportsCar Championship currently runs four classes on track at once, split between two fundamentally different car types: purpose-built Prototypes and production-based GT cars. 

IMSA unveils 48-car full-season WeatherTech SportsCar Championship entry list for 2024

IMSA

IMSA unveils 48-car full-season WeatherTech SportsCar Championship entry list for 2024

By Richard S. James - Oct 12, 2023, 12:45 PM ET

The IMSA WeatherTech SportsCar Championship looks to roll into the 2024 season with its biggest fields yet. As IMSA President John Doonan promised earlier in the season when he announced the intent to have an entry list prior to Petit Le Mans, the approved list of entries for the complete...

logo
Terms & ConditionsPrivacy PolicyContact usFeedbackConsent Preferences
Motorsports
IndyCarNASCARFormula 1IMSA
Participate
ClubsSchoolsSingle Makes
Subscribe
StreamingFree NewslettersManage Magazine
Services
AdvertiseStudioAgency Creators

All contents copyright © 2026, Racer Media & Marketing, LLC. or Racer Network, LLC. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in any form without prior authorization. Your use of this website constitutes acceptance of our Privacy Policy and Terms & Conditions. Contact us at 2525 Main St, Ste 430, Irvine, CA 92614, 949.417.6700 for more information.