In the last 100 hundred years only 11 favourites have actually won the Grand National. Five of them have come in the last 20 years notably: Don't Push It (2010), Comply Or Die (2008), Hedgehunter (2005), Earth Summit (1998) and Rough Quest in 1996.
Nearly all these horses have gone off at 7/1, which on the face of it seems low odds for such a high risk race. Nevertheless, even at 7/1 each way backers would still be showing a small profit. In 2014 however, it looks like Shutthefrontdoor will go off favourite at 8/1 or shorter.
Famously Mon Mome won in 2009 at 100/1 but these victories are rare, pre-race favourites at Aintree are normally short priced odds because they have a realistic chance of winning. They're likely to be very good jumpers and may have previously run well on the course or placed in a National already.
In the last 20 years, excluding the favourites and the 100/1 long shot, the average winning price has been 20/1 so it makes more sense to look at horses in and around that price.
Below we've put together a list of the horses that are currently the shortest odds for the 2016 Grand National.