The 1998 SCCA Pro Racing World Challenge was the ninth running of the Sports Car Club of America's World Challenge series. It was the final year before SpeedVision purchased the series, thus giving the World Challenge a TV contract. This led to the series' popularity growing and ultimately surpassing that of the Trans Am Series. 1998 was the final year of the T1/T2 format, as Speed reformatted the classes into GT and TC.
| Round | Circuit | Winning driver (T1)Winning driver (T2) | Winning vehicle (T1)Winning vehicle (T2) | |
|---|---|---|---|---|
| 1 | Topeka |  Bill Cooper Pierre Kleinubing | Chevrolet Corvette ZR1Acura Integra R | |
| 2 | Lime Rock | Peter CunninghamPierre Kleinubing | Acura NSXAcura Integra R | |
| 3 | Mid-Ohio | Terry BorchellerHugh Plumb | Saleen MustangBMW 328is | |
| 4 | Minneapolis | Chris WiehleLance Stewart | Chevrolet CorvetteAcura Integra R | |
| 5 | West Michigan | Peter CunninghamLance Stewart | Acura NSXAcura Integra R | |
| 6 | Trois Rivieres | Terry BorchellerMichael Galati | Saleen MustangAcura Integra R | |
| 7 | Road America | Terry BorchellerLance Stewart | Saleen MustangAcura Integra R | |
| 8 | Watkins Glen | Terry Borcheller Lance Stewart | Saleen MustangAcura Integra R | |
| 9 | Pike's Peak | Terry BorchellerPierre Kleinubing | Saleen MustangAcura Integra R |