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The1999 Irwindale 250 presented by Jan's Towing was the seventhstock car race of the1999 NASCAR Winston West Series season and the first iteration of theevent.^[2] The race was held on Saturday, June 19, 1999, atIrwindale Speedway, a 0.500 mile (0.804 km) oval shaped racetrack inBakersfield, California. The race took the scheduled 250 laps to complete. The race was won bySteve Portenga, his first win of the season and the first of his career. With 16 laps remaining,NASCAR Craftsman Truck Series driversRon Hornaday Jr. andMike Wallace led the race, but the race was slowed by Wallace crashing, and after pit stops,Bill Sedgwick and Portenga battled for the lead, with Portenga passing Sedgwick in the first turn on the final lap.^[3] Sedgwick finished second, followed byButch Gilliland in third, Hornaday in fourth, and Wallace, despite the crash, remained on the lead lap in fifth.

TheIrwindale Speedway & Event Center (informally "The House of Drift") was a motorsports facility inIrwindale, California,United States. It operated from 1999 to 2024 with banked, paved¹⁄₂- and¹⁄₃-mile oval tracks and a¹⁄₈-mile drag strip. It heldWest Series races from 1999 to 2011, 2014 to 2017, and finally from 2019 up until its closure in 2024.

Butch Gilliland won the pole with a speed of 100.722 mph.

	Pos	Driver	Points
2	1	Brandon Ash	1026
	2	Sean Woodside	1004 (–22)
2	3	Steve Portenga	1001 (–25)
3	4	Mike Chase	1000 (–26)
1	5	Austin Cameron	951 (–75)
2	6	Butch Gilliland	922 (–104)
	7	Eric Norris	915 (–111)
2	8	Joe Bean	900 (–126)
	9	Sammy Potashnick	873 (–153)
	10	Jason Small	865 (–161)

• Note: Only the first 10 positions are included for the driver standings.

• 1999 NASCAR Winston West Series
• June 1999 sports events in the United States
• NASCAR races at Irwindale Event Center

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