By Reid Spencer NASCAR Wire Service Distributed by The Sports Xchange 868: The number of laps led by Dale Earnhardt Jr. in NASCAR Sprint Cup Series races at Martinsville Speedway. The .526-mile short track is the only venue where Earnhardt has led 800 or more laps. Second on his career list is Bristol, where Earnhardt has crossed the stripe with the lead 790 times. Third is Talladega, where Earnhardt has led 775 laps en route to five of his 19 career victories, his high-water mark in the win column at a single track.
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