At the 104th running of the Pikes Peak International Hill Climb this Sunday, to the surprise of almost nobody on the mountain, a nearly stock Chevrolet Corvette ZR1X demolished the production car record.
Pikes Peak might just be the most unpredictable motorsport event in the world, given the challenges of oxygen deprivation, weather fluctuations, and even wildlife sightings on the race up to the 14,115-foot summit. And yet, the ZR1X’s combined 1,250 horsepower and hybridized all-wheel-drive traction proved beyond a reasonable doubt just how much performance GM baked into America’s new flagship hypercar.

Chevrolet tapped IndyCar and Pikes Peak veteran JR Hildebrand to pilot the ZR1X, which featured modifications only as necessary to meet the mountain’s stringent safety standards. Hildebrand’s program spanned weeks of testing ahead of race day, and the ZR1X immediately started logging impressive times on practice portions of the 12.42-mile course. Every launch tended to clear out team tents in the pits, as the enthusiast within every other driver, engineer, and mechanic clamored to catch a vision of the brutal acceleration from the top-spec ’Vette.
“This is just the right tool for the job to come to a place like this,” Hildebrand told duPont Registry. “You've got the front drive unit literally pulling you out of the corners, right up into the RPM band of the ICE powertrain behind you. And it’s all just completely seamless… I'm just sitting here, locked in, enjoying the ride.”

Of course, inclement Colorado weather can roll in any time of day or night and render Pikes Peak a nightmare for teams, drivers, and cars. On race day last year, high winds at the summit dictated finishing at the ranger station nestled into Glen Cove, at just 11,440 feet of elevation. European Hill Climb Championship driver Simone Faggioli won King of the Mountain on that shortened course with a time of just 3:37.196.
This year, any remaining cloud cover burned off at sunrise as balmy temperatures graced the entire mountainside. In qualifying, which by coincidence almost perfectly matches the distance of 2025’s race, Hildebrand managed a time of 3:57.504 – good enough to start 13th overall on race day. This allowed a new cadre of Ultra4 cars, as well as a fleet of GT4 Trophy racers, to clear dust off the road and ensure ideal traction for the ZR1X. But first, longtime Pikes Peak denizen David Donner, who has claimed eight class victories over the years, looked to cement his 000 Magazine-liveried 2022 Porsche 911 Turbo S with an official production car time on an official race day.
Previously, Donner had driven the Turbo S to a wintry raceday time of 10:34.053 amid damp and foggy weather in 2022, and then on a non-race day attempt, logged a PPIHC-certified time of 9:53.541. Those times straddled the official race day record of 10:18.488 which Rhys Millen set in a Bentley Continental GT in 2019.
Amid this year’s ideal conditions, Donner very nearly matched that prior record with a time of 9:53.740 – or good enough to elicit applause from the pits and fans as the announcers explained the new standard. By then, two places back, Hildebrand had already set off from the starting line.

Shod in Michelin Pilot Sport Cup 2 R rubber on the stock carbon wheels, with a livery celebrating America’s 250th anniversary, the ZR1X roared off with all four tires churning. The Pikes Peak leaderboard then struggled a bit, and Hildebrand’s sector times never flashed until the third out of four, where he handed Donner a solid five seconds. By the summit, his finishing time of 9:30.104 firmly shut the door for any potential challenges from the remaining drivers.
On hand to witness the record-setting run, Executive Chief Engineer for Global Corvette and Performance Cars Tony Roma erupted into an exuberant cheer when Hildebrand’s record finally flashed on the leaderboard.
“When JR and I first started talking about this program and what the car was capable of,” Roma said. “We knew the car would be fast. We did a little bit of analysis to know it should easily break the record, but I mean, he just crushed it!”
“This is basically a production car with the alignment and tire pressure set,” Roma continued. “We've added only the things required for the rules: safety equipment, fuel cell, roll cage, seat belts, fire system, cutoff switches, things like that. There's nothing performance enhancement-wise, everything is bone stock and legit, right down to the DOT tires that you can buy on your ZR1X.”

The rest of the day’s results played out with minimal drama, at least for Pike Peak standards. Ford returned with overall record-holder Romain Dumas behind the wheel of the Super Mustang Mach-E and set the third quickest time ever, at 8:18.202.
Briton Robin Shute, meanwhile, debuted an all-new SendyCar V1 and claimed a class win against second-place Faggioli, good enough for the rear-wheel drive record at 8:29.497. And Emelia Hartford in a “base” Corvette ZR1 without the benefits of electric power or all-wheel traction can now claim the title of fastest woman on four wheels up the hill, beating out the former Queen of the Mountain Laura Hayes by more than six seconds.
A noticeable buzz surrounded Pikes Peak this year, at the popular fan fest in downtown Colorado Springs and among the fans lining the race course up the mountain. Chevy and the dual effort certainly contributed to the excitement, and Hildebrand in the ZR1X in particular likely set a time that may deter any other automakers from even attempting a competing program at all in the near future.
Only a Czinger 21C, perhaps, or a McMurtry Spéirling might come anywhere near the ZR1X’s capability. Each might, in their own right, challenge the production “class” that’s not an actual class on race day – Hildebrand technically competed in the Time Attack 1 category, something the Pikes Peak organization certainly needs to define more specifically.
More clearly delineated regulations would help to clarify exactly what constitutes a production car record, now that the ZR1X as the world’s most attainable hypercar has set a new benchmark for racing up the world’s most iconic hill climb.
PHOTOS COURTESY: Michael Van Runkle, Larry Chen