Winning distance betting on the Grand National is predicting the margin between the winner of the race and the horse that finishes second. This is measured in lengths and bookmakers offer odds on various distances.
The winning distance is affected by a number of different factors but the main one is the ground. If the Aintree going is good or better then there is a better chance of more horses completing the course and as such, more chance of two horses battling it out as they head to the line which leads to the liklihood of a shorter winning distance.
The average winning distance over the past ten years has been 8 1/2 lengths with the majority of races being run on good ground. However, if you don't factor in the only race run on heavy ground (2001) the average distance makes up at 6 lengths.
Upto and including 3 lengths 2/1
over 3 upto and including 6 lengths 11/4
Over 6 upto and including 9 lengths 5/1
Over 9 upto and including 12 lengths 11/2
Over 12 lengths 3/1
Odds Courtesy of Skybet
| Year | Going | Winner | Winning Margin |
| 2009 | Good | Mon Mome | 12 lengths |
| 2008 | Good | Comply or Die | 4 lengths |
| 2007 | Good | Silver Birch | 3/4 length |
| 2006 | Good to Soft | Numbersixvalverde | 6 lengths |
| 2005 | Good to soft | Hedgehunter | 14 lengths |
| 2004 | Good | Amberleigh house | 3 lengths |
| 2003 | Good | Monty's Pass | 12 lengths |
| 2002 | Good | Bindaree | 1 3/4 lengths |
| 2001 | Heavy | Red Marauder | distance (30 lengths of more) |
| 2000 | Good | Papillon | 1 1/4 lengths |
