The 1998 Mosport Festival was a multi-class sports car and GT motor race held at Mosport International Raceway in Bowmanville, Ontario, Canada on August 9, 1998. It was the fifth round of the 1998 Professional SportsCar Racing Championship season. The race was held over a two-hour-and-45-minute time period, during which 128 laps of the 3.9-kilometre circuit were completed for a race distance of 506.544 kilometres.

The race was won by the Dyson Racing team with drivers Butch Leitzinger and James Weaver driving a Riley & Scott Mk III-Ford. It was the 13th and final IMSA GT Championship race held at Mosport, with the championship being replaced by the American Le Mans Series in 1999.

Race results Class winners in bold.

Pos Class No Team Drivers Chassis Tyre Laps Engine 1 WSC 16 Dyson Racing Butch Leitzinger James Weaver Riley & Scott Mk III 128 Ford 5.0L V8 2 WSC 20 Dyson Racing Elliot Forbes-Robinson Dorsey Schroeder Riley & Scott Mk III 128 Ford 5.0L V8 3 GT1 4 Panoz Motorsports David Brabham Andy Wallace Panoz GTR-1 127 Ford (Roush) 6.0L V8 4 GT1 5 Panoz Motorsports Éric Bernard Raul Boesel Panoz GTR-1 127 Ford (Roush) 6.0L V8 5 WSC 27 Doran Enterprises, Inc. Didier Theys Fredy Lienhard Ferrari 333 SP 126 Ferrari F310E 4.0L V12 6 WSC 7 Doyle-Risi Racing Wayne Taylor Eric van de Poele Ferrari 333 SP 123 Ferrari F310E 4.0L V12 7 WSC 28 Intersport Racing Jon Field Jacek Mucha Riley & Scott Mk III 119 Ford 5.0L V8 8 WSC 63 Downing Atlanta A.J. Smith Jim Downing Kudzu DLM-4 119 Mazda R26B 2.6L 4-Rotor 9 GT3 10 Prototype Technology Group Bill Auberlen Mark Simo BMW M3 112 BMW 3.2L I6 10 GT3 1 Prototype Technology Group Ross Bentley Peter Cunningham BMW M3 111 BMW 3.2L I6 11 GT2 6 Prototype Technology Group Marc Duez Ross Bentley BMW M3 111 BMW 3.2L I6 12 GT2 99 Shumacher Racing Larry Schumacher John O'Steen Andy Pilgrim Porsche 911 GT2 110 Porsche 3.6L Turbo Flat-6 13 GT2 04 C.J. Motorsports John Morton John Graham Porsche 911 GT2 110 Porsche 3.6L Turbo Flat-6 14 GT3 23 Alex Job Racing Cort Wagner Darryl Havens Porsche 964 Carrera RSR 102 Porsche 3.8L Flat-6 15DNF GT2 00 David Friedman David Friedman Nick Longhi Porsche 993 Carrera RSR 53 Porsche 3.6L Turbo Flat-6 DNS GT3 22 Alex Job Racing Darryl Havens Cort Wagner Porsche 911 Carrera RSR - Porsche 3.8L Flat-6

References