Riley Dederick Kern Herbst[1] (born February 24, 1999) is an American professional stock car racing driver.

[2] In 2015, he raced weekly at Irwindale Speedway in a Super Late Model as well as winning the track's Speed Trucks championship.

[4] During his youth, Herbst competed in the Lucas Oil Off Road Racing Series' Junior 1 Kart division.

[5] In 2020, he joined his cousins Pierce and Thor at the 2020 Baja 1000, where they finished second in the Trophy Truck Spec class.

[7][8] Herbst, his father, Troy, and Jordan Dean won the Trophy Truck Spec class in the 2023 Baja 1000, finishing 8th overall.

He won one race at Pocono, earned top-fives, 10 top-tens, and finished seventh in the final standings.

[3] In June 2018, Herbst joined JGR for his NASCAR Xfinity Series debut at Iowa Speedway.

[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.

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.

[30] 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.

On January 31, 2023, Herbst was announced to have signed with Rick Ware Racing to make his Cup Series debut in the No.

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 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.

* Season still in progress 1 Ineligible for series points (key) (Bold – Pole position awarded by qualifying time.