Grand National 2027 Ante-Post Market Update (September 2026)
This is where the 2027 Grand National betting market stands as of late September 2026. I Am Maximus sits at the top on 12/1 after a season that has rewritten the record books at Aintree. Anyone weighing up ante post betting horse racing options this early should know the market has moved on since our original 2027 Grand National betting market guide was published.
The picture has firmed up considerably since then. I Am Maximus’s win earlier in 2026 reshaped the whole conversation around next year’s race, and bookmakers have priced him accordingly.
Grand National Betting Odds 2027: Current Market Overview
I Am Maximus leads the ante-post odds at 12/1 on the strength of a remarkable three-year record at Aintree. He won the Grand National in 2024, finished runner-up in 2025, then returned in 2026 to reclaim the crown. That victory made him the first horse since Red Rum in 1977 to win the race and take the title back after losing it.
Second in the betting is Soldier In Milan at 14/1. He arrives with serious form of his own, having won the 2026 Irish Grand National at Fairyhouse by 16 lengths under trainer Emmet Mullins. That kind of winning margin in a top staying handicap chase is hard to ignore. Punters have reacted by shortening him into second favourite well ahead of the new season.
Willie Mullins and JP McManus Extend Historic Records
I Am Maximus’s 2026 win did more than restore his own reputation. It gave trainer Willie Mullins his fourth Grand National success and his third in a row, a feat no trainer had managed since Vincent O’Brien in the 1950s. Three consecutive Aintree wins for one trainer puts Mullins in company that has stood untouched for more than seventy years.
Owner JP McManus also made history. His fourth Grand National win, again with I Am Maximus, makes him the most successful owner in the race’s long history. Between Mullins in the saddle room and McManus in the colours, the 2026 renewal handed both men records that will take some beating.
How Ante Post Betting Horse Racing Odds Shape the 2027 Grand National
Ante post betting horse racing lets punters back a horse for a race months in advance. The price is usually bigger than punters would get closer to the day. The trade-off is risk: if the horse is withdrawn before the race, most ante-post bets are lost, win or void depending on the bookmaker’s terms.
That trade-off is exactly what is shaping the early 2027 market. I Am Maximus’s price of 12/1 reflects his proven Aintree class. It also carries the uncertainty of a horse needing to stay sound and in training for another seven months. Soldier In Milan’s 14/1 tells a similar story. Bookmakers respect his Irish National form, but they are wary of pricing him any shorter before he has a confirmed route to Aintree.
What happens next
These prices are not fixed. Ante-post odds for the Grand National tend to shift through the fixture list, and weights and fields will not be finalised until much nearer April 2027. Anyone following the market closely should expect movement as trials take shape over the winter.
In the meantime, readers looking for shorter-term value have options. They can check our daily racing tips guide, browse today’s Lucky 15 selections, or look over our each-way betting analysis while the National market settles.
