In 2022, Mackenzie won the USF Juniors Championship, with 5 wins of 16 podiums, 12 podiums, 10 poles, track records, and most laps lead. He has a 75% podium average and a 33% winning average. In his USF2000 debut he had 1 win of 3 starts. He later went on to race in his FR Americas debut where he had 1 win and 3 podiums of 9 starts.
In 2021, Mackenzie gained the title USF4 Vice Champion as the
winningest driver with 6 wins, 9 podiums, 17 starts, poles, and track record. He was also the winningest F4 driver ever in Canada with a 53% podium average and a 35% winning average.
Mackenzie's passion for motorsports began in 2014 at the Waterloo Regional Kart Club. He was awarded both the 2014 Rookie of the Year and the 2015 Most Sportsman-like driver title during his time at the club. He was 11 years old when he attended his first national event, the Canadian Karting Championships in 2015.
Mac had many accomplishments during his five-year karting career. At only 12 years old, Mackenzie ranked top 10 in Canada and was crowned Class Vice-champion at the 2016 Canadian Karting Nationals. The same year, he was awarded the Most Sportsman-like driver by MIKA & TRAK Karting Club.
Mackenzie progressed through the levels of karting. In 2017 he won the Ron Fellows Karting Championship. This was backed by podium results in the National ECKC series. His results became the best of all Birel ART drivers in North America.
Mackenzie began competing on an international level in the 2017/18 season. He represented Team Canada in World Karting Finals, taking place at South Garda Karting in Lonato, Italy. He recalls it to be his favourite track. Mac also had strong results in his SKUSA Pro Tour campaign, finishing in the top 5 among the strongest drivers in North America.
Starting a successful 2019 campaign, he made an appearance on the ROK Cup USA podium early in the year. This was followed by a victory at the SuperKarts USA (SKUSA) Winter Series. Moving up a category later in the year earned him a national podium result in his first Vortex ROK Senior race. Mackenzie also became one of 18 international drivers to be selected by Birel ART to compete at the 2019 F4 Richard Mille Young Talent Academy in Le Mans, France. He finished as a finalist.
Mackenzie progressed to car racing, he has tested and competed in F1600 cars, along with experience in BMW & Mazda Miata Sportscars. He attended the top US school for racing, the Bertil Roos Formula Car Racing School, graduating top of his class. His car racing experience includes piloting a GT car in two 8-hour endurance races, along with testing in a GT4 Porsche.
Accomplishing the goals he set for the year, 15-year-old Mackenzie finished the 2019 season winning the Rookie-of-the-Year Honours in the F1600 Canada program.
In his sophomore year, Clark reached his goal once again, dominating Canada's F1600 scene on his way to becoming the youngest ever F1600 Canada Champion. He beat former IndyCar driver Paul Tracy’s record, set in 1985.
During Mackenzie’s 7 years of competition, he has accumulated results that rank him as one of Canada’s best professional prospects. Currently, Mackenzie is continuing his schooling at Ontario Tech University for Mechanical Engineering. He is focused on becoming a motorsports engineer, along with his path to becoming a real and virtual pro racing driver.