Mark Stewart

Mark Stewart (born December 27, 1997) is an American professional stock car racing driver who currently competes part-time in the NASCAR Whelen Modified Tour, driving the No. 81 for Christopher Turbush. He is the nephew of Chris and Roger Turbush, the latter of which also competes part-time in the series.

In 2026, Stewart got his first career win in the Whelen Modified Tour at Riverhead Raceway.

Stewart has also previously competed in the SMART Modified Tour, EXIT Realty ProTruck Challenge, the Monaco Modified Tri-Track Series, and the NASCAR Weekly Series, and is a frequent competitor at his home track of Riverhead Raceway.

Motorsports results NASCAR (key) (Bold – Pole position awarded by qualifying time. Italics – Pole position earned by points standings or practice time. * – Most laps led.)

Whelen Modified Tour NASCAR Whelen Modified Tour results Year Car owner No. Make 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pts Ref 2023 Heather Turbush 81 Chevy NSM RCH MON RIV LEE SEE RIV WAL NHA LMP THO LGY OSW MON RIV NWS THO MAR 44th 73 2024 NSM RCH THO MON RIV SEE NHA MON LMP THO OSW RIV MON THO NWS MAR 49th 62 2025 Christopher Turbush NSM THO NWS SEE RIV WMM LMP MON MON THO RCH OSW NHA RIV THO MAR 42nd 79 2026 NSM MAR THO SEE -* -* Sapienza Racing 36 N/A RIV OXF SEE CLM WMM MON THO NHA STA OSW RIV THO

SMART Modified Tour SMART Modified Tour results Year Car owner No. Make 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pts Ref 2026 Chris Turbush 81 N/A FLO AND SBO DOM HCY WKS FCR CRW PUL CAR CRW ROU TRI NWS -* -*