Beattie Feathers with 1,004 rushing yards in 1934.
The first NFL player to rush for 1,000 yards was Beattie Feathers. He set the record in 1934 as a player for the Chicago Bears when he rushed for 1,004 yards.
1985 - Roger Craig
In a season, that was Don Hutson of the 1942 Green Bay Packers with 1211.
Roger Craig of the 1985 San Francisco 49ers. He rushed for 1050 yards and had 1016 receiving yards.
Tony Canadeo with 1052 rushing yards in 1949.
Every season at least 10 players have 1000 yards
Jack Mildren was the first college quarterback to rush more than 1,000 yards in a season. During his freshman season in 1971, Mildren rushed 1,140 yards.