With 56 minutes left on the clock at Road America on Sunday, the IMSA Airbnb Endurance Challenge title was still Oscar Tunjo’s to lose. Then he lost it. Tunjo’s No. 1 Gebhardt Motorsport USA Duqueine D09 speared off track exiting the Carousel with an apparent mechanical failure, burying itself in the gravel before teammate Valentino Catalano ever got a turn behind the wheel. That single moment, not anything Toney Driver Development did on strategy or pace, is what handed the team both a race win and a series championship in its first full season of IMSA competition.
The finale produced a split result that’s more common in sports car racing than casual fans realize: the car that won the race wasn’t the car that won the title. Wyatt Brichacek and Lincoln Day drove the No. 95 Ligier JS P325 to victory by 13.366 seconds, Brichacek’s second Airbnb Endurance Challenge win of the year and Day’s first win of the season. But it was their teammates, Ari Balogh and Garett Grist in the sister No. 30 car, who mattered more to the championship math. Their second-place finish vaulted them from third in points, 40 back entering the race, to first by the time the checkered flag fell.
That swing was only possible because of how IMSA structured the 2026 LMP3 season. Rather than folding every VP Racing SportsCar Challenge round into one points chase, IMSA carved out a four-race sub-championship, the Airbnb Endurance Challenge, layered on top of the regular sprint schedule. Sebring, Circuit of the Americas, VIRginia International Raceway and Road America each hosted a two-hour, multi-driver endurance race with its own 40-minute minimum drive-time rule, forcing every team to actually execute a driver change and pit strategy rather than run one lineup start to finish. That format rewards teams built around split stints, which is exactly why Toney’s two-car program was positioned to capitalize the moment the points leaders fell over.
Tunjo wasn’t the only title contender undone by the gravel. Brian Thienes, who entered the race second in points and just 30 behind the lead in the No. 77 Forte Racing Ligier JS P325, buried his own car in the same trap earlier in the race and lost laps repairing a damaged nose before handing off to Patrick Kujala. Two of the three cars ahead of Toney in the standings didn’t just lose ground on Sunday; they were functionally eliminated from title contention by the same stretch of Wisconsin gravel. That’s the blunt math of a four-race sub-championship: there’s no cushion for a bad day, and Road America handed out two of them at once.
Toney’s own campaign wasn’t clean, either. Grist pointed to a caliper failure at COTA that put the team on the back foot for most of the summer, and running split stints under caution always carries the risk of a driver-swap mistake. What separated Toney from the teams ahead of it wasn’t perfect execution so much as durability: both Ligiers made it to the finish without a mechanical DNF all year, which counts for more in a four-race title fight than it would across a full season where teams can drop a bad result. Endurance racing has a way of punishing that kind of fragility no matter the class. We saw the same math play out earlier this year in GT3 competition, where a single wheel bearing failure erased what should have been Lamborghini’s breakthrough win. Championships in sports car racing are as often lost to parts as they are won on pace.
There’s a bigger-picture read here for anyone tracking how the American prototype ladder actually works. Toney Driver Development won an IMSA title in its first full season, then turned around and locked in a multi-car LMP3 commitment for 2027, a season IMSA has confirmed will run seven endurance races. That’s a development team betting its future on the endurance format, on the idea that multi-driver, mixed Pro-Am lineups teach drivers more than another sprint weekend would. It’s the same logic behind manufacturers formalizing support for prototype racing at every level, from current LMP3 grids down to the historic machines Honda’s own heritage program is putting back on track. The ladder only works if teams are willing to build it, and Toney just showed the model can produce a championship almost immediately.
Buried in the results sheet is a subplot worth watching, too. The Bronze Cup battle between Thienes and Travis Hill unofficially ended in a tie once the Hill/Daniel Oliver entry crossed the line ahead of the struggling Thienes/Kujala car. Bronze Cup scoring exists to reward the gentleman-driver money that keeps LMP3 budgets viable, and a team’s ability to protect that secondary title is often what decides whether a program can afford to come back for another season at all.
The VP Racing SportsCar Challenge’s sprint season isn’t finished. GSX competitors race at VIR next week, with LMP3 rejoining the field at Road Atlanta in October to close out 2026. But the number that actually matters walked away from Road America already decided: Toney Driver Development is the first Airbnb Endurance Challenge champion, built on a two-car program that lost nothing to reliability while two legitimate contenders lost everything to a gravel trap. In a four-race title fight, that’s not luck. That’s the format working exactly as designed.
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