Five of the last 25 Grand National winners have been clear or

joint favourites. The most recent favourite to succeed was Don’t Push It in 2010, the 10/1 joint market leader with Big Fella Thanks, who finished fourth. No favourite has started at less than 5/1 since 1975.

AGE

Nine-year-old horses have won 45 of the 171 runnings of the Grand National where the winner’s age was recorded.

Eight-year-old horses have done best in recent Grand Nationals, winning three of the last four renewals – Many Clouds (2015), One For Arthur (2017) and Tiger Roll (2018).

OLDEST WINNER

Peter Simple (1853), aged 15.

Three successive Grand Nationals were won by 11-year-olds – Neptune Collonges in 2012, Auroras Encore in 2013 and Pineau De Re in 2014. The last 12-year-old to triumph was Amberleigh House in 2004. Plenty of 12-year-olds succeeded before that, but there have only been two 13-year-old victors – Sergeant Murphy in 1923 and Why Not in 1894.

The oldest horse in this year's race is the Gordon Elliott-trained, 14-year-old, Bless The Wings.

Folsom Blue (12-year-old) is the second oldest horse in the race.

There are five 11-year-olds (Rathvinden, Plesant Company, Regal Encore, Mala Beach and Ultragold).

YOUNGEST WINNER

Alcibiade (1865), Regal (1876), Austerlitz (1877), Empress (1880) and

Lutteur III (1909) were all aged five when successful in the Grand National. Since 2012, only seven-year-olds and upwards can take part.

The last seven-year-old to succeed was Bogskar in 1940.

The youngest horse in this year's race is the seven-year-old, Ramses De Teillee.

WINNING MARES

A total of 13 mares have on the Grand National.

There is one mare running in the race this year, the Jessica Harrington-trained Magic Of Light.

PAST WINNERS:

1. Charity (1841)

2. Miss Mowbray (1852)

3. Anatis (1860)

4. Jealousy (1861)

5. Emblem (1863)

6. Emblematic (1864)

7. Casse Tete (1872)

8. Empress (1880)

9. Zoedone (1883)

10. Frigate (1889)

11. Shannon Lass (1902)

12. Sheila’s Cottage (1948)

13. Nickel Coin (1951)

Everybody loves a grey horse; three different grey horses have won the National four times. Photo Healy Racing

GREY HORSES

There are three grey horses running in the 2019 edition of the Aintree Grand National; Lake View Lad, Ramses De Teillee and Vintage Clouds.

WINNERS:

Three different grey horses have won the Grand National four times:

1. The Lamb (1868 and 1871)

2. Nicolaus Silver (1961)

3. Neptune Collonges (2012)

GREYS PLACED SINCE 1997:

1997 Suny Bay (second)

1998 Suny Bay (second)

2002 What’s Up Boys (second)

2002 Kingsmark (fourth)

2008 King Johns Castle (second)

Of the 40 runners in this year's renewal, 19 are Irish-trained. For all the Aintree Grand National insight you need be sure to pick up your copy of The Irish Field this week.

Bet with William Hill here