He is scheduled to compete in 13 more races through November before stepping away.
In the statement, Sadler said, "After much consideration and many conversations with my family, I've decided this will be my last season racing full time in NASCAR". The former Hendrick Motorsports driver has 18 victories in 15 years in the Cup Series. "My son and daughter's life is more important to me than what I do on the race track". That win came amid speculation that Hendrick would part ways with Kahne following six seasons. The 38-year-old says he will focus on his son, Tanner, and his Kasey Kahne Racing sprint auto teams.
"I need to spend more time doing the things I enjoy and love and that's spending time with [my 2-year-old son] Tanner and my sprint auto teams", Kahne wrote.
"Elliott Sadler has been a true competitor throughout his NASCAR career, and an outstanding supporter of motorsports in the Commonwealth", said Richmond President Dennis Bickmeier.
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It comes two weeks after a 6.9-magnitude quake in the same area, in which more than 400 people have died. The tremor was also felt in the island's capital Mataram and on the neighbouring resort island of Bali .
CONCORD, N.C. (AP) - NASCAR driver Kasey Kahne says he is retiring from full-time racing.
Kahne signed with Leavine Family Racing for 2018.
Kahne, in his first year driving the No. 95 Chevrolet for Leavine Family Racing, now is 28th in the Cup Series standings. Sadler has finished second each of the last two seasons in the NXS. He spent 12 full-time seasons in the Cup Series driving for Wood Brothers Racing, Robert Yates Racing, Evernham Motorsports and Richard Petty Motorsports.