Justin Allgaier

Justin Allgaier Bio

Justin Myrl Allgaier (born June 6, 1986) is an American professional stock car racing driver from Springfield, Illinois. He competes full-time in the NASCAR O’Reilly Auto Parts Series, driving the No. 7 Chevrolet Camaro SS for JR Motorsports, and also runs part-time in the NASCAR Cup Series with the same organization. Allgaier is the 2008 ARCA Re/Max Series champion, the 2024 NASCAR Xfinity Series champion, and the 2009 NASCAR Nationwide Series Rookie of the Year. He also holds the record for the most top-ten finishes in the history of the NASCAR O’Reilly Auto Parts Series.

Standing 5 feet 6 inches tall and weighing roughly 145 pounds, Allgaier has built a long career as one of the most consistent drivers in NASCAR’s second-tier series. He has also earned the NASCAR Xfinity Series Most Popular Driver award multiple times, reflecting his strong connection with fans across the country.

Early Life and Background

Justin Allgaier was born in Springfield, Illinois, and raised in nearby Riverton, Illinois. His father, Mike Allgaier, raced under the nickname “Gator,” and that family connection sparked Justin’s interest in motorsports at a young age. The younger Allgaier earned his own nickname, “Little Gator,” as a playful nod to his father’s handle.

Allgaier began racing at the age of five in quarter midgets, collecting more than one hundred feature wins and five championships before he was a teenager. He moved into stock cars at thirteen, competing for three seasons in the UMP Late Model Series around Illinois. By the time he was sixteen, he had already made his debut in the ARCA Re/Max Series at the Illinois State Fairgrounds Racetrack, finishing seventeenth in a car owned by Ken Schrader.

While pursuing his racing dreams, Allgaier attended Lincoln Land Community College, where he majored in engineering from 2004 to 2006. His engineering background has often been cited as a strength in understanding car setups and communicating with his crew chiefs throughout his career.

Path to NASCAR

Allgaier’s early ARCA seasons served as his training ground for NASCAR. He split time in 2005 between Hixson Motorsports and Bobby Gerhart Racing, winning his first career pole at Springfield in a track-record run. That same year, he made his NASCAR Craftsman Truck Series debut with MB Motorsports, making four starts in the No. 63 Ford and appearing on the Discovery Channel program “Driver X,” which followed Jack Roush’s search for new talent.

In 2006, Allgaier claimed his first ARCA victory at the Illinois State Fairgrounds Racetrack, becoming the first Springfield-area resident to win a championship auto race at the historic venue. He added a second ARCA win at Salem in 2007, and then dominated the 2008 ARCA Re/Max Series with six victories, including the final three races of the season. That title run ended Frank Kimmel’s eight-year championship streak and established Allgaier as a legitimate prospect for NASCAR’s national series.

Justin Allgaier Career

Early Career (2002-2008)

Allgaier’s professional career began at sixteen in the ARCA Re/Max Series, where he ran a partial schedule while finishing high school and attending community college. Between 2002 and 2004, he pieced together starts in cars owned by his father, Ken Schrader, Kerry Scherer, and Bob Schacht, learning the ropes on short tracks and speedways across the Midwest.

By 2008, Allgaier had grown into a championship-caliber ARCA driver. Driving for his family team, he won six races that season and secured the ARCA Re/Max Series championship. The title made him an attractive candidate for NASCAR, and in May 2008 he signed with Penske Racing to run four late-season Nationwide Series races in the No. 12 Dodge.

NASCAR Nationwide / Xfinity Series Breakthrough (2009-2013)

Allgaier moved to the NASCAR Nationwide Series full-time in 2009 with Penske Championship Racing, racing with Verizon sponsorship. He earned his first career NASCAR pole at Memphis Motorsports Park and was named the 2009 Nationwide Series Rookie of the Year. The following season, he captured his first Nationwide Series victory at Bristol Motor Speedway on March 20, 2010, finishing fourth in the final standings and leading all series regulars.

When Penske shut down its No. 12 Cup car for 2011, Allgaier joined Turner Motorsports in the No. 31 Chevrolet. He opened the year by winning the inaugural STP 300 at Chicagoland Speedway and added another victory in 2012 at Circuit Gilles Villeneuve in Montreal, where he passed Jacques Villeneuve on the final lap. These road course and intermediate track wins helped establish Allgaier as a versatile threat on the Nationwide circuit.

JR Motorsports Era (2016-Present)

After a full-time 2014 and partial 2015 run in the NASCAR Cup Series with HScott Motorsports, Allgaier returned to the Xfinity Series in 2016 with JR Motorsports in the No. 7 Chevrolet. He finished third in the standings that year despite going winless, then ended a personal victory drought in 2017 at Phoenix with his first win in five seasons.

The 2018 season was a breakout, as Allgaier won five races, captured the Xfinity Series Regular Season Championship, and led the standings into the playoffs. He followed that with consistent playoff appearances and added wins at Richmond, Atlanta, Darlington, and other tracks in subsequent seasons. In 2024, he finally broke through for the big prize, winning the NASCAR Xfinity Series championship after fourteen seasons in the series by finishing second to Riley Herbst at Phoenix Raceway.

Driving Style and Strengths

Allgaier is widely regarded as a road course ace and a smart, methodical racer who excels at saving equipment and finishing races. His background in engineering, combined with steady feedback to his crew chiefs, has helped him maximize performance on intermediate tracks. He is also known for being strong on short tracks and for his aggressive yet calculated restarts.

Notable Races and Milestones

Allgaier’s signature victories include his first Nationwide win at Bristol in 2010, his emotional return to victory lane at Phoenix in 2017, his dominant 2018 Regular Season Championship run, and his clinching of the 2024 Xfinity Series title. He also earned a memorable victory at Martinsville during the 2023 playoffs to reach the Championship 4, and he added a thrilling 0.005-second win at Daytona later that summer.

Justin Allgaier Career Wins

Across NASCAR’s top national and regional series, Justin Allgaier has built one of the most decorated résumés of any active driver without a full-time Cup ride. He is the all-time leader in top-ten finishes in the NASCAR O’Reilly Auto Parts Series, and he has added Cup Series and Truck Series experience along the way.

NASCAR Xfinity / O’Reilly Auto Parts Series Highlights

Allgaier has 33 career wins in the NASCAR O’Reilly Auto Parts Series, along with 316 top-ten finishes and 13 poles. His first win came in 2010 at Bristol Motor Speedway, and his most recent victory came at Pocono. He captured the 2018 Regular Season Championship and the 2024 Xfinity Series championship, and he was named the series’ Most Popular Driver from 2019 to 2021 and again from 2023 to 2025.

Other Wins and Performances

In the ARCA Menards Series, Allgaier recorded 8 wins, 46 top-ten finishes, and 2 poles, including the 2008 series championship. His first ARCA win came in 2006 at the Illinois State Fairgrounds Racetrack, and his last came in 2008 at Toledo. In the NASCAR Craftsman Truck Series, he made 8 starts without a top-ten finish between 2005 and 2008.

Justin Allgaier Family

Family Background and Racing Lineage

Allgaier’s father, Mike Allgaier, was an active racer known as “Gator,” and the family operated a race team together out of Illinois. Justin’s early ARCA and Late Model seasons often came in cars owned or supported by his father, giving the younger Allgaier an early education in race-day operations and car preparation.

Personal Life

Justin Allgaier is married to his wife, Ashley, and the couple has two daughters, Harper and Willow. After winning the 2024 NASCAR Xfinity Series championship, the city of Springfield, Illinois, declared December 14 as “Justin Allgaier Day,” and the State of Illinois followed with a similar honor on December 9, 2025.

2025 Season Performance

The 2025 season marked a major new chapter for Allgaier, as JR Motorsports officially entered the NASCAR Cup Series full-time, with Allgaier driving the No. 40 Chevrolet Camaro ZL1. Sponsored by Chris Stapleton’s Traveller Whiskey, the team made its Cup debut at the Daytona 500. Allgaier raced his way into the 500 via the Duels, started nineteenth, and finished ninth, earning both his first Cup top-ten since 2015 and JR Motorsports’ first top-ten in the series.

In the NASCAR O’Reilly Auto Parts Series, Allgaier opened 2025 with an eighteenth-place finish at Daytona before catching fire on intermediate tracks. He won back-to-back races at Las Vegas and Homestead, then added a third victory at Nashville, vaulting him back into the playoff conversation and reinforcing his status as a championship favorite.

Throughout the year, Allgaier balanced his Cup and Xfinity duties while continuing to log consistent top-ten finishes. His ability to compete for wins in two national series at the same time underscored both his versatility and the depth of the JR Motorsports program, and he continued to be a leading contender for another O’Reilly Auto Parts Series title.