[2] Borkowski grew up in the small town of Middlebury, Connecticut and began racing Quarter Midgets at the Silver City Quarter Midget Club in Meriden, Connecticut — the same club as race car drivers Jeff Simmons, Erin Crocker, Joey Logano, and renowned Indycar engineer Chris Simmons.
At age 16, Borkowski made the transition to full size cars competing in the 1989 Spenard David School and 1990 Bertil Roos School Racing Series, winning three out of seven races, two pole positions, and finishing on the podium five times.
In 1992, Borkowski had a unique opportunity to co-pilot the Oldsmobile Aerotech in a grueling test of endurance and speed at the Firestone Test Track in Fort Stockton, Texas, setting multiple FIA World Speed Records in the process.
He was awarded the Team USA Scholarship[4] to compete at the legendary British Formula Ford Festival at Brands Hatch.
In 1998 Borkowski returned to Indy Lights under the Team Rahal Letterman banner but with limited success, collecting only one top five finish at Vancouver in fourteen starts.
In 1998, Borkowski also ran his second 24 Hours of Daytona, campaigning a Tom Gloy fielded GT1 Ford Mustang Cobra alongside drivers Tony Kanaan and Robbie Buhl, finishing third in class.
[8] Together Borkowski and Donohue won three races, stood on the podium ten times, and finished second overall in the series championship.
In 2004, Borkowski also piloted a Lola Nissan LMP2 prototype in the 12 Hours of Sebring with co-drivers Ian James and John Macaluso, winning their class.