The 2010 SCCA Pro Racing World Challenge was the 21st season of the SCCA Pro Racing World Challenge. It was the first season since 1998 without the sponsorship of television channel Speed. The series returned to a combined-class race with GT, GTS, and TC racing simultaneously. The last season for combined classes was 1996, also the last year in which the series had more than two classes. There are three classes in the championship in 2010, as opposed to two in 2009. The top GT class remains the same, but the TC class has been changed to only allow more cost-effective racecars closer in spirit to the SCCA's improved touring classes. The rules were originally introduced during the 2009 season as the TC2 class within the touring car category. The cars that previously competed in the old TC cl