Rager wasn't quite five years old when he ran a "space ship" go-kart around the track during an intermission for a race program that included his dad, Bob, at the Nebraska State Fair in Lincoln.
At age 14, Rager purchased a stock car for $35 and raced at a local track. He later moved to Lincoln and raced on weekends. His first sprint win was at Jefferson County Speedway in Nebraska,
Rager enjoyed numerous milestones as a sprint car racer in the early 1970s. He won many races all over the country and also was the United States captain for a sprint car team competing in South Africa in 1973. He returned to North America and moved to the Twin Cities in the mid-1970s. It was about that time that Rager also set a world record for the fast lap on a one-mile dirt track piloting a spring car without a wing. He also won the points championship at the famed Knoxville track. He would become the only driver to win at Knoxville in the 1960s, 1970s, 1980s, 1990s and 2000s.
Rager had many accomplishments as a sprint car racer, but he changed his race focus to the Indy Car series in the late 1970s. Rager started running some USAC events in 1976 and made his first Indy 500 qualifying attempt in 1977. His admirable qualifying run ended in a crash at 190 mph. Despite running on a small budget against some million dollar race teams, Rager just missed qualifying at the brickyard by one spot in 1979. He did make the Indy 500 field in 1980 with the 10th fastest qualifying time.
"I had A.J. Foyt on the outside of my (fourth) row, so I thought I would follow him and he actually was slowing me down," Rager said of the legendary racer. Rager not only was leading Foyt, but the entire Indy 500 field for two laps. Rager finished his Indy Car career with six top 10 finishes in 23 starts in USAC or CART events. He was also a USAC Rookie of the Year in 1980.
Rager's focus returned to sprint car racing in the mid-1980s when he was asked to drive for a guy at the speedway in Jackson, Minn. He also left the Twin Cities and purchased a resort on Loon Lake, just west of Pequot Lakes, in 1988. Rager's time in a sprint car started to dwindle as he focused much of his time on building up the resort. He eventually took time off from racing.
Rager was about to turn 50 years old when he received an offer to drive a sprint car at Cedar Lake Speedway in Wisconsin. "I finally said I would drive one time, but I finished second in the heat and feature," he recalled. "I figured if it's still this easy, maybe I should start driving again." Rager continued racing for the next 10 years and continued to enjoy success by winning an additional 30 features, including four at Knoxville. One of those races was a national qualifier in the 360 class. He also was a Masters Champion three times in six years at Knoxville.
Accomplishments: United State Auto Club (USAC) Rookie of the Year, "Action Track" Driver of the Year, Captain of the United States Sprint Car Team in South Africa, Track Championship at Knoxville, IA and Minneapolis (North Star Speedway), Washington State Championship, NSS - National Champion 2000 & 2001, Knoxville, IA Masters Champion 2 out of 3 years, Member of the elite "Leaders Circle Club", National Sprint Car Hall of Fame
-  1980 Indy 500 stats
- Roger Rager at ChampCarStats.com
-  Nebraska Auto Racing Hall of Fame
-  National Sprint Car Hall of Fame
- Bill Carlson, MN 22:52, 7 October 2010 (UTC) added/edited content