Mark Dilley started his professional racing career on the short tracks of Ontario and the northern U.S., recording 27 feature wins in super stocks and super late models between 1984 and 1989. He continued stock car racing between 1990 and 2006, where he notched seven CASCAR national wins and 14 CASCAR east victories. He won the 1994 CASCAR national championship and finished Top-10 in the series’ points standings in every year that he raced.

Dilley also won the 1992 CASCAR track title at Barrie Speedway and recorded 52 Top-5 finishes in national CASCAR competition. The newly-branded NASCAR Pinty’s Series (NPS) debuted in 2007, where Dilley became the seventh driver to win a race under the NASCAR banner. He added two more wins and remained active in the series until 2022, recording 37 Top-5 finishes.

Dilley’s involvement with short track racing extended to the business side as well. He was instrumental in the re-opening and renovation of Barrie Speedway in 1999 and was GM of the track until 2002, when he transitioned to co-owner from 2003 to 2004. He later became involved with nearby Sunset Speedway, where he was vice president from 2009 to 2016. During his time at Sunset, he oversaw a $1.5 million renovation and helped the track gain NASCAR sanctioning.

During his time with both Barrie and Sunset, Dilley owned and operated the Mark Dilley Driving Experience, providing racing experiences to over 6,000 participants. He went on to co-own Sauble Speedway from 2017 to 2018, helping the track gain NASCAR sanctioning, and is currently a car owner and manages sponsorships in NPS.