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IROC XXII was the twenty-second season of the International Race of Champions, which started on February 13, 1998. The series used identically prepared Pontiac Firebird Trans Am race cars, and contested races at Daytona International Speedway¹, California Speedway, Michigan International Speedway, and Indianapolis Motor Speedway. Mark Martin won $225,000 and the IROC championship, his third straight win and fourth in five seasons.

The roster of drivers and final points standings were as follows:

Position	Driver	Points	Winnings	Series
1	Mark Martin	86	$225,000	NASCAR Winston Cup
2	Jeff Burton	57	$100,000	NASCAR Winston Cup
3	Jeff Gordon	51	$60,000	NASCAR Winston Cup
4	Al Unser Jr.	46	$50,000	CART World Series
5	Terry Labonte	39	$45,000	NASCAR Winston Cup
6	Tony Stewart	37	$40,000	Indy Racing League
7	Dale Earnhardt	36	$40,000	NASCAR Winston Cup
8	Jimmy Vasser	34	$40,000	CART World Series
9	Randy LaJoie	31	$40,000	NASCAR Busch Series
10	Dale Jarrett	29	$40,000	NASCAR Winston Cup
11	Tommy Kendall	28	$40,000	SCCA Trans-Am Series
12	Arie Luyendyk	26	$40,000	Indy Racing League

Race results

This was the first appearance for IROC at Indianapolis. It was a support event for the Brickyard 400.
Mark Martin started last and won the race (the 5th time in IROC history that the winner started last).
This was Al Unser Jr.'s first appearance at the Indianapolis Motor Speedway since failing to qualify at the 1995 Indy 500.