Age
Age is one of the best indicators to a horse's chances of winning the Grand National. Looks for runners who are aged 8, 9, 10 or 11 as the majority of winners in the last ten years have fallen within this bracket. Three of the last six winners, meanwhile, have all been 11-year-olds – Neptune Collonges in 2012, Auroras Encore in 2013 and Pineau De Re in 2014. It's worth noting that 8-year-olds have won three out of the last four races.