23 running backs have achieved 10,000 + yards in the NFL.
Roger Craig in the 1985 season with 1050 rushing yards on 214 attempts and 1,016 receiving yards on 92 receptions.Marshall Faulk in the 1999 season with 1381 rushing yards on 253 attempts and 1048...
400 meters or 437 yards
Emmitt Smith
Typically 3 to 4. Maybe 1 or 2 more on the practice squad.