In 2015, he raced weekly at Irwindale Speedway in a Super Late Model as well as winning the track's Speed Trucks championship.[2] In 2016, he raced several NASCAR East and West series races along with racing a Super Late Model at Irwindale.[2]
Off-road racing
Herbst is from a family rooted in off-road racing. His father Troy, grandfather Jerry, and uncles Ed and Tim participate in desert racing such as the Baja 500 and Baja 1000.[2][3] The quartet was inducted into the Southern Nevada Sports Hall of Fame in 2014.[4]
In 2020, he joined his cousins Pierce and Thor at the 2020 Baja 1000, where they finished second in the Trophy Truck Spec class.[6] The trio also ran the 2021 1000 and placed ninth.[7][8]
Herbst, his father, Troy, and Jordan Dean won the Trophy Truck Spec class in the 2023 Baja 1000, finishing 8th overall.[9][10]
ARCA Menards Series
In 2017, Herbst drove full-time for Joe Gibbs Racing in the No. 18 Toyota in the ARCA Racing Series. He drove the No. 81 in the first race but withdrew due to age limitations. He then moved to the No. 18 for the rest of the season. He won one race at Pocono, earned top-fives, 10 top-tens, and finished seventh in the final standings.[11][12] He also claimed the series' Rookie of the Year award over Gus Dean after passing Dean in the season's final event.[13] For the 2019 season, he split JGR's No. 18 with Ty Gibbs.
In 2020, Herbst assumed full-time driving duties in the No. 18. He qualified for the playoffs but was eliminated following the first round.[16] He ended the year with a 12th-place points finish, four top-five finishes, 17 top tens, and the best finish of second at Auto Club Speedway and Kentucky Speedway.[17] After the season, JGR signed Daniel Hemric to drive the No. 18 full-time starting in 2021, leaving Herbst without a ride.[18]
On December 10, 2020, Stewart–Haas Racing announced Herbst would drive the No. 98 Ford beginning with the 2021 season.[17] After a rough start to the season that saw his involvement in wrecks—none of which were of his doing—in three of the first four races,[19][20] he rebounded with a fourth-place finish at Phoenix Raceway.[21] In 2022, Herbst would have his best season in his Xfinity career; his 8 Top 5 and 20 Top 10 finishes during the season were all career-highs.
Herbst began the 2023 season with a sixth-place finish at Daytona. He then scored five more consecutive top-ten finishes. Despite missing the playoffs, Herbst scored his first career win at Las Vegas.[22] The end to his season was strong, as the win was part of a five-race streak of top five finishes.
Remaining at SHR for 2024, Herbst repeated the previous year's result to finish sixth at Daytona.[23] Having run in the top positions throughout the following race at Atlanta, he ran out of fuel whilst sitting second with a few laps left, eventually dropping to 15th.[24][25] Herbst scored his first win of the season at Indianapolis after he made a spectacular last lap pass on Aric Almirola.[26] Unfortunately, he would be knocked out of the first round of the playoffs. At Phoenix, Herbst gave Stewart–Haas Racing its final race win; he finished seventh in the points standings.[27]
On May 28, 2024, Stewart–Haas Racing announced it would shut down its NASCAR operations at the end of the season.[28]
On October 12, 2019, Herbst was passing Johnny Sauter on the final lap for the win in the tri-oval at Talladega Superspeedway but was blocked across the apron forcing NASCAR to penalize Sauter and give Spencer Boyd his first career win, Herbst would finish third.
Herbst returned to the Truck Series in February 2021 for the Daytona road course race, driving the No. 17 Ford for David Gilliland Racing.[31] He returned to the No. 17 truck for Daytona and Kansas in 2022.
Cup Series
On January 31, 2023, Herbst was announced to have signed with Rick Ware Racing to make his Cup Series debut in the No. 15 Ford at the 2023 Daytona 500.[32] Herbst would go on to finish tenth in his debut despite being involved in a multi-car crash late in the race. He is also one of five drivers in NASCAR history to score a Top 10 in their first Cup, Xfinity, and Truck Series starts. He made another start for Rick Ware at Talladega where he started 36th and finished 20th. He competed for Front Row Motorsports at the 2023 Coke Zero Sugar 400 at Daytona in the No. 36 Ford. He started in sixth but fell to the back at the end of stage 1 before getting caught up in the big one at the end of stage 2. He would be classified in 38th place. Herbst would compete for Front Row in the No. 36 again in the fall Talladega race that same year. Herbst would start in sixth again but this time was able to finish the race despite crashing again. He was also in contention for the win as he ran in fourth for the closing laps of the race and pushed Ryan Blaney to the lead on the final lap and almost pushed Kevin Harvick to the victory before he got spun by Corey LaJoie and took out most of the field coming out of the tri-oval. Herbst would come across the line in 9th (originally 10th before Harvick got disqualified), his best career finish in the Cup Series.
Herbst signed with Rick Ware for the 2024 Daytona 500 driving the No. 15 again but this time with Monster Energy as a sponsor instead of SunnyD, which was his sponsor in the previous year's race. Herbst qualified in 12th but finished in 20th in the Duels, which started him in 36th for the race. Herbst was at one point in the top 10 during the race but ultimately finished in 24th. Herbst ran another race that same year in the No. 15 at Kansas, starting 37th and finishing 35th, two laps down.
On November 20, 2024, 23XI Racing announced that Herbst would drive the No. 35 Toyota full-time for the 2025 season. Herbst will run long-time partner Monster Energy as his sponsor.[33]