The racing bug bit Tim Berg early; he entered his first race at age 14. While his career as an on-track competitor was relatively short, he and his wife, Roxanne, made an enormous impact on the sport as race promoters, performance shop owners, engine building and industry leaders for more than three more decades.

Tim transitioned from racer to mechanic in the mid-1970s. Soon he and Roxanne got involved in operating the Central Cross Country (CCC) circuit. Under their ownership, it evolved into Motorsports Racing Plus (MRP) before they sold it in 1989. During that era, they helped usher in a new generation of snowmobile competition with short-course ice lemans racing and the emergence of snocross.

The Bergs launched Black Magic Motorsports in 1988. The business became the go-to shop for Arctic Cat racers and enthusiasts, and built engines for key Cat racers like Blair Morgan and Carl Kuster.

The Bergs sold Black Magic Motorsports in 2005 but remain tied to the snowmobile racing community. Both 72, Roxanne and Tim reside in Sioux Falls, South Dakota.