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The1990 SCCA Escort World Challenge season was the inaugural season of theSports Car Club of America'sWorld Challenge series under the sprint race format, after changing its name from the Escort Endurance Championship while keeping the corporate sponsor of Escort radar detectors. The series would also have to share attention with the SCCA's main series,Trans Am. This would be the only season to feature only two classes until 1997, between which the series would use three to five classes per season.Peter Cunningham got his first win, finishing first atLaguna Seca Raceway in aHonda CRX. This would begin a longtime relationship between Cunningham and Honda, as well as his longtime career in the series, in which he is now the best-performing driver by number of wins.
| Round | Circuit | Winning driver (WC) Winning Driver (SP) | Winning Vehicle (WC) Winning Vehicle (SP) |
|---|---|---|---|
| 1 | Sears Point |  Scott Lagasse / Doc Bundy
| Lotus Esprit X180R Honda CRX |
| 2 | Dallas Street Circuit | R.K. Smith
| Chevrolet Corvette Eagle Talon |
| 3 | Laguna Seca | Doc Bundy
| Lotus Esprit X180R Honda CRX |
| 4 | Des Moines Street Circuit | R.K. Smith
| Chevrolet Corvette Eagle Talon |
| 5 | Road Atlanta | Doc Bundy
| Lotus Esprit X180R Eagle Talon |
| 6 | Toronto Street Circuit | John Heinricy
| Chevrolet Corvette Honda CRX |
| 7 | Denver Street Circuit | Scott Lagasse
| Lotus Esprit X180R Eagle Talon |
| 8 | San Antonio Street Circuit | R.K. Smith
| Chevrolet Corvette Eagle Talon |