Longest odds winner of the horse racing Grand National
Who
Mon Mome, Tipperary Tim, Gregalach , Caughoo , Foinavon
Where
United Kingdom (Aintree)
When
2009
The longest odds for a winning horse at the Grand National is 100/1 and was achieved by Tipperary Tim (1928), Gregalach (1929), Caughoo (1947), Foinavon (1967) and Mon Mome (2009).