The Hoosier 2.5 Challenge will be joining us at CSRG's Corkscrew Classic, June 12-14 - Laguna Seca Raceway! Spectators are FREE!
The Hoosier 2.5 Challenge delivers pure momentum racing — tight grids, fearless braking, and wheel-to-wheel battles where driver talent matters more than horsepower. From green flag to checkered, every lap is a fight for inches.
B-Sedan racing features small-bore, under-2.5-liter production sedans from the late 1960s to the late 1970s, famously competing as the "under card" in Trans-Am, SCCA, and IMSA series. Iconic cars include BMW 2002s, Datsun 510s, and Alfa Romeo GTVs, which are celebrated today for close, nostalgic vintage racing.
Club Wheelhouse returns to Laguna Seca at CSRG's Corkscrew Classic, June 12-14. Spectators are FREE!
Bringing the thrill of the last generations of analog racing back to the track. Porsche GT3 Cup cars from the 996 and 997 eras are welcome to join. Don't miss the opportunity to watch over 20 of Porches finest GT3 Cup cars doing battle at Laguna Seca Raceway.
The Crossflow Cup returns to Laguna Seca at CSRG's Corkscrew Classic, June 12-14. Spectators are FREE!
50+ years ago, a Ford Kent engine was installed in what was essentially a Lotus 22 Formula Junior Chassis. The results created a class of affordable race cars, that were formative in the careers of almost all Formula Champions in the decades that followed. The Crossflow Cup is a series for Historic Formula Fords (Cars built in 1972 or before) and Club or Classic Formula Fords for cars built prior to 1981.
The Crossflow Cup returns for its tenth year in 2026 with its core objective of gathering racers who venerate these cars. We always have a great time showing the racing world the proper place for what is the most important racing class in the history of Motorsports. The Crossflow Cup provides big fields, hard but clean racing at the front middle and back of the pack, lots of prizes, and great parties; all in a 5 weekend 10 race schedule at premiere tracks, with the opportunity to travel to other exciting tracks to earn bonus points. Come join the fun.
