The National nearly always looks impossible to solve. Up to 40 runners and riders! 30 fences! and run over four miles! Don't despair. Make your free bet pay with these following Grand National tips.

1) Just two horses in the past 20 years have started in single figure starting odds. If you want the National winner then make sure it is 10/1 or above. Betfair's new SP system, however, could ensure EVERY horse starts in double figure odds.

2) The Irish have a disproportionate amount of winners in the big race. Nearly all recent winners have had an Irish connection whether that be riders, runners or where the horse was born!

3) Check the race card and make sure your selection is carrying more than 10st. Lightly weighted horses don't win the race these days - the classier animals tend to win it.

4) Course form is so important at Aintree. When making your selection online, have a look to see whether your tip has run over the course before. It may have run in the race last year or perhaps in the Becher Chase at Aintree in November.

5) Don't expect the race to be won by a famous trainer. In recent years many less well known handlers have landed the marathon and gear their whole season around the contest.

Bookmark this page and check back regularly as the big race day approaches for more exclusive Grand National betting facts from Freebet.co.uk

Betting on the Grand National promises to be the number one horse racing event of the year for free bet offers. Forty of the world's best horses tackle the famous fences at Aintree in Liverpool.

Before taking one of the free bets on offer for the Aintree Grand National it is worth considering that only 21 horses completed the race last year. There may be lots of free bets on offer but be careful if using them for the Grand National. Be sure to read the latest form guide to see how the runners and riders are shaping up before the big race and place your free bet accordingly.

Betfair offer a whole host of different bets for the Grand National and you can even bet in running once it has started. The offers below are perfect for your free Aintree Grand National bet.