Eric Dickerson currently holds the record for a single season by rushing 2,105 yards. When he made this record, he was playing for the Los Angeles Rams. In 2012 Adrian Peterson got just 8 yards of this record.
Michael Vick rushed for 1039 yards in the 2006 season to set the single season rushing record for quarterbacks.
Through the 2008 season, that is Edgerrin James with 1,709 rushing yards in the 2000 season.
Emmitt Smith holds the record for most rushing yards in a career with 18,355 yards. Eric Dickerson holds the record for most rushing yards in a season with 2,105 yards. Adrian Peterson holds the record for most rushing yards in a single game with 296 yards.
Eric Dickerson - 2,105 yards
In 1992, Barry Foster set the Steelers single season rushing record with 1,690 yards.
In the NFL, it is Bobby Douglass with 968 yards for Chicago in 1972. In this 2004-2005 season, Michael Vick is on a pace to break that record. As of the start of the 2007 season, Michael Vick holds the single season rushing record by a quarterback with 1,039 yards in the 2006 season.
As of the 2007 season, the Eagles single season rushing yardage record holder is Wilbert Montgomery who ran for 1,512 yards in 1979.
Denard Robinson from the University of Michigan holds the record for most rushing yards by a quarterback in a season with 1,538 yards. Robinson also holds the record for most career rushing yards by a QB in NCAA history with 4,495 yards.
Tim Tebow with 20 in 2007.
Through the 2009 season, Emmitt Smith with 1773 yards in 1995.
Eric Reynolds from Central Bucks South has 34 td in a single season.
Bobby Humphrey. 1471 yards (1986)
Steve Grogan of the New England Patriots holds the NFL record for rushing TDs by a quarterback in a season with 12 in 1976.
Emmitt Smith scored 25 rushing touchdowns during the 1995 season.
LaDainian Tomlinson had 28 rushing touchdowns (31 total) in 2006.
As of the 2007 season, LaDainian Tomlinson of the San Diego Chargers holds the NFL record for most rushing touchdowns in one season with 28 in 2006.
Depends on if you mean all time/career or single season
Mark Henderson of West Ouachita High School. 1996-97 season. 3052 yards.
Through the 2008 season, Adrian Peterson rocked the San Diego Chargers November 4th, 2007 with 296 yards rushing for the NFL record.