GRIDLIFE and World Racing League (WRL) are reviving the 25 Hours of Thunderhill as part of the newly announced GRIDLIFE Thunderhill, a new motorsports event at Thunderhill Motorsports Park in Willows, California, scheduled for April 2-4, 2027. 

The event format will serve as the opening round of the 2027 GRIDLIFE National Championship season and will mark the return of the 25 Hours of Thunderhill, which last ran in 2023.

WRL, in partnership with GRIDLIFE, will revive the grassroots endurance racing event and surround it with a full GRIDLIFE competition program.

"Bringing back the 25 Hours of Thunderhill is a big deal for grassroots motorsports, and we want the whole weekend to match that," said Chris Stewart, GRIDLIFE president and co-founder. "With WRL leading the endurance race, we're building a full GRIDLIFE experience around it. We want Thunderhill Raceway Park to feel alive across the whole site, with fans and drivers coming together, and the energy carrying on long after dark. It's the kind of weekend we'd want to spend at the track ourselves, and we can't wait to share it with everyone as we kick off the 2027 season."

After a four-year absence, the 25 Hours of Thunderhill is set to return in 2027, and is scheduled to begin Saturday afternoon, run through the night and conclude 25 hours later.

"The 25 Hours of Thunderhill has always been the ultimate test of endurance, strategy, and sheer determination," said RJ Till, WRL President. "After a four-year hiatus, WRL is excited to revive this legendary race alongside GRIDLIFE, introducing a new generation of drivers and fans to the world of endurance racing."

The return of the big race will be the centerpiece of a larger motorsports experience, designed to connect endurance racing competitors to GRIDLIFE drivers, enthusiasts, families and the surrounding community. 

GRIDLIFE Thunderhill will deliver the full GRIDLIFE National Championship competition experience alongside the WRL 25-hour endurance race.

The weekend will feature:

• Eibach GRIDLIFE Touring Cup (GLTC)––GRIDLIFE's wheel-to-wheel touring car racing series.
• GRIDLIFE Grand Touring (GLGT)––Grand Touring competition as part of the GRIDLIFE racing program.
• GRIDLIFE TrackBattle Time Attack––Drivers competing against the clock to record their fastest lap.
• GRIDLIFE Drift––Drift action showcasing car control, driving style, and the excitement of grassroots motorsports.
• WRL Grand Touring (GT)––WRL's Grand Touring competition as part of the WRL endurance racing program.
• WRL General Production (GP)––WRL's General Production competition as part of the WRL endurance racing program.

GRIDLIFE and WRL will simultaneously activate all these motorsports activities at Thunderhill Motorsports Park, using all race tracks and surfaces throughout the weekend.

The result will be an immersive environment where spectators can experience a broad spectrum of motorsports in one destination, from wheel-to-wheel competition to time attack, drifting and around-the-clock endurance racing.

For more information, visit grid.life, thunderhill.com or racewrl.com.