Grand National Favourites – Do They Actually Win?

The Grand National favourite is the most backed horse in the most bet-upon race in British sport — and it loses roughly 85% of the time. That is the paradox at the heart of this article. Every year, millions of pounds converge on a single horse at the top of the Grand National betting market, driven by tipster columns, pub conversations, and the reasonable-sounding logic that the shortest-priced runner must be the likeliest winner. The logic is not wrong, exactly. The favourite does have the highest individual probability of any horse in the field. The problem is that “highest individual probability” in a 34-runner handicap chase over four miles and 30 fences still means something in the region of 10% to 20% — and the favourite’s false promise is that it feels like much more.

Since 2000, only six Grand National favourites have won. Six out of more than twenty-five runnings. The rest found the unique demands of Aintree too much, or were simply overtaken by the race’s inherent chaos. This is not a sport where class always prevails. The Grand National penalises it — deliberately, systematically, by design.

What follows is a data-driven examination of the favourite’s record: how it compares to horse racing averages, which winning favourites broke the pattern and why, and where the numbers suggest you might find better value. If you have ever asked “how often does the favourite win the Grand National?” and received a vague answer, this is the precise one.

Favourite Win Rate: Grand National vs Horse Racing Average

Across all horse racing in Britain — flat and jumps combined — the favourite wins approximately 30% to 35% of races. In smaller fields with strong market leaders, the figure can exceed 40%. The favourite is, on aggregate and over time, the single best predictor of a race outcome that a casual observer has access to. The market is not infallible, but it is efficient enough that backing every favourite at SP would produce a manageable loss over a season, rather than the catastrophic one you might expect from random selection.

The Grand National demolishes this baseline. The favourite’s win rate here sits at roughly 15% over the past quarter-century — less than half the sport-wide average. Extend the window further and the numbers barely improve. The race has always been hostile to market leaders. A 34-runner handicap over the longest and most obstacle-laden course in National Hunt racing is designed to generate unpredictable outcomes, and it delivers on that design with remarkable consistency.

Why such a stark difference? Three structural factors explain most of it. First, field size. A typical jump race has eight to fourteen runners. The Grand National has 34. Even if the favourite is the best horse in the race, it must survive alongside 33 others through 30 fences over four miles and two furlongs. The probability of something going wrong — a mistake at a fence, interference from a loose horse, a bad position at a critical point — scales with the number of competitors. Second, the handicap system. The favourite in the Grand National is almost always a top-weighted or near-top-weighted horse, carrying more weight than three-quarters of the field. That weight is assigned precisely to level the playing field, which means the favourite’s class advantage is partially neutralised before the race even begins. Third, distance. Four miles and two furlongs is the longest trip in mainstream British racing. Even horses with impeccable stamina records can find the final half-mile of the Grand National a different test entirely, and the favourite’s superior speed or jumping ability at shorter distances may count for little when every horse in the field is running on empty.

Data from Entain underscores how this affects the betting public: 82% of cash bets on the Grand National are for £5 or less, reflecting a population of recreational bettors who approach the race as entertainment rather than investment. Many of those small bets land on the favourite, not because of form analysis, but because the favourite is the horse they have heard of. The market accommodates this money, but the race does not accommodate the assumption behind it.

For context, here are the approximate favourite win rates across different race types in British racing:

The trend is clear: as fields get larger and conditions more extreme, the favourite’s advantage erodes. The Grand National represents the furthest extreme on both axes.

Every Winning Favourite Since 2000

Six horses have won the Grand National as market favourite since the turn of the millennium. Each victory had a specific explanation — and taken together, they reveal the narrow set of circumstances under which the favourite can overcome the race’s structural disadvantages.

Hedgehunter — 2005, 7/1 Joint Favourite

Trained by Willie Mullins and ridden by Ruby Walsh, Hedgehunter won by 14 lengths — one of the most decisive Grand National victories in modern memory. He was a ten-year-old carrying 11st 1lb, experienced over fences and in strong form that season. Crucially, the 2005 Grand National was run on good-to-soft ground, which suited his profile. Hedgehunter was the kind of favourite that actually fits the race: right age, right weight, right conditions. He also came from an Irish stable with Grand National expertise, a factor that has only grown in significance since.

Comply Or Die — 2008, 7/1 Favourite

David Pipe-trained and ridden by Timmy Murphy, Comply Or Die was a nine-year-old carrying 10st 13lb — light for a favourite. His price reflected a strong form profile over staying trips and fences, but he was not an overwhelming market leader. At 7/1 in a 40-runner field (the old maximum), he was a favourite in name but shared market support with several other contenders. His victory illustrated that Grand National favourites are more likely to win when they are a “soft” favourite — priced around 6/1 to 8/1 rather than sitting at the front of the market at 4/1 or shorter.

Don’t Push It — 2010, 10/1 Joint Favourite

AP McCoy’s long-awaited Grand National winner was joint favourite at 10/1, a price that barely qualifies as favouritism in most racing contexts. The race had no dominant market leader, and Don’t Push It prevailed partly because McCoy’s brilliance got the best out of a horse that needed things to fall right. This was a Grand National where the favourite won almost by default — as the shortest price in a wide-open market rather than as the clear class horse.

Tiger Roll — 2019, 4/1 Favourite

The most impressive winning favourite of the era, and possibly the most impressive of any era. Tiger Roll was seeking — and achieved — back-to-back Grand National victories, something no horse had done since Red Rum in 1973–74. At 4/1 he was the shortest-priced Grand National favourite in years, and his victory was built on a unique combination of course experience, ideal weight (11st 5lb, fair for his ability), and the sheer competitive intelligence that made him one of the great Aintree specialists. Tiger Roll is the exception that proves the rule: a generational talent who had already won the race and knew every fence. Most favourites are not Tiger Roll.

Corach Rambler — 2023, 8/1 Favourite

Lucinda Russell’s gelding went off at 8/1 — a relatively generous price for a favourite — and won impressively on ground that suited him. He had won the Ultima Handicap Chase at Cheltenham the previous month, which shortened him in the market, and his stamina credentials were beyond question. Corach Rambler was another “soft” favourite: well-fancied but not prohibitively short, carrying a manageable weight of 10st 12lb. His profile matched the historical template of what a winning Grand National favourite looks like.

I Am Maximus — 2024, 7/1 Favourite

The most recent winning favourite, trained by Willie Mullins and ridden by Paul Townend. I Am Maximus was a class act who had run in Cheltenham Gold Cups, and his eight-year-old profile placed him right in the sweet spot. At 7/1 he was well-backed but not an odds-on certainty, and his victory came in the first year of the reduced 34-runner field. Mullins’ fingerprints on Grand National success — Hedgehunter in 2005, I Am Maximus in 2024 — are impossible to ignore.

The pattern across all six winners is striking. None was priced shorter than 4/1, and most were in the 7/1 to 10/1 range — prices that reflect genuine contention rather than dominance. All carried relatively moderate weights for their ability. All had proven stamina over long distances. And five of the six were aged between eight and ten, right in the demographic sweet spot for Grand National success.

Why the Favourite Struggles at Aintree

The statistics above describe the outcome. The question is why the Grand National is so inhospitable to favourites, and the answer lies in the race’s unique combination of variables — each one individually manageable, but collectively devastating to predictability.

The field size is the first and most obvious factor. Since 2024, the Grand National has been run with a maximum of 34 runners, reduced from the previous limit of 40. That change was driven by safety concerns. As Dickon White, then Regional Director of The Jockey Club, noted: “There is a direct correlation between the number of runners and the risk of falling, unseating or being brought down.” The reduction improved safety outcomes, but 34 is still an enormous field by any standard. In most handicap chases, the favourite faces eight to fourteen opponents. Here, it faces 33. The simple probability maths — setting aside all form and class analysis — means that the favourite’s chance is diluted by sheer numbers.

The handicap system is the second structural headwind. The Grand National is a handicap race, meaning each horse carries a weight assigned by the BHA’s official handicapper based on its assessed ability. Better horses carry more weight. The favourite, almost by definition, is the horse the market considers most likely to win — which usually means it is one of the highest-rated and therefore one of the heaviest-burdened runners in the field. In a four-mile race with 30 fences, every extra pound matters. The weight spread in a typical Grand National field is roughly 25 to 30 pounds from top to bottom, and that gap is designed to make the outcome competitive rather than predictable.

According to the BHA’s 2025 Racing Report, the broader horse racing market shows increasing polarisation: average turnover per race on Premier fixtures rose by 1.1% year-on-year, while Core fixture turnover fell by 8.1%. Bettors are concentrating their money on the biggest events. The Grand National is the ultimate Premier fixture, which means it attracts disproportionate public money — and much of that money lands on the favourite simply because it is the name people recognise. The market may be efficient, but the favourite’s price is partly shaped by recreational money that follows familiarity rather than form.

Then there are the fences. Aintree’s Grand National course features 16 unique obstacles — jumped mostly twice, for 30 fences in total — that are unlike anything in normal National Hunt racing. Becher’s Brook, The Chair, and Canal Turn are testing enough for horses that know them; for a first-time runner, they are a genuine examination. The favourite may be the best horse on paper, but if it has never navigated Becher’s Brook at race pace with 33 other horses around it, the form book is of limited use. Course experience matters at Aintree more than at any other racecourse in Britain, and it is not always the favourite that has the most of it.

Finally, the sheer distance — four miles and two furlongs — is a test of endurance that exposes every weakness. Horses that stay well over three miles may find the extra distance a different challenge entirely when they are also carrying weight, jumping demanding fences, and being bumped and jostled by a large field. The last half-mile of the Grand National is where races are won and lost, and it is the section where the favourite’s class advantage is most likely to evaporate under fatigue.

The Value Zone: Winners Between 14/1 and 33/1

If the favourite wins only 15% of the time, where do the other 85% of winners come from? The data points consistently to a band of odds that might be called the value zone: roughly 14/1 to 33/1. This is the range where recent Grand National winners have clustered, and the range that offers the most attractive combination of reasonable probability and meaningful payout.

Consider the winners from the past decade. Nick Rockett won at 33/1 in 2025. I Am Maximus at 7/1 in 2024 was the favourite — an outlier. Corach Rambler at 8/1 in 2023 was another favourite. Noble Yeats at 50/1 in 2022 was a genuine outsider. Minella Times at 11/1 in 2021. Tiger Roll at 4/1 in 2019 (another favourite, and a repeat winner). The pattern is irregular, but when you aggregate over a longer period — say, 15 to 20 years — the median winning price consistently lands in the mid-teens to low thirties.

The average winning odds over the last decade hover around 20/1. That is the market’s centre of gravity for Grand National outcomes: long enough that a win delivers a transformative return on a small stake, but not so long that you are relying on a miracle. A £5 each-way bet on a 20/1 winner returns £115 from the win part alone (plus £17.50 from the place part, for a total of £132.50 on a £10 outlay). Compare that to the favourite at, say, 6/1, where the same £5 each-way returns £42.50 total if it wins.

Why does this zone produce so many winners? Partly because it represents the largest segment of the field. In a typical Grand National market, you might have two or three horses at 10/1 or shorter, ten to twelve priced between 14/1 and 33/1, and the remainder at 40/1 or longer. The value zone contains the highest density of runners, and since the handicap system is designed to give every horse a chance, the probability is naturally spread across this band. The longer shots at 50/1 and above can win — Noble Yeats proved that — but they do so at a rate roughly consistent with their implied probability, which is very low.

The practical implication for bettors is straightforward. Rather than concentrating your Grand National stake on the favourite, consider spreading it across two or three horses in the 14/1 to 33/1 range that fit the race’s ideal winner profile: aged eight or nine, carrying no more than 11 stone, with at least three runs in the current season and proven stamina over long distances. This approach sacrifices the simplicity of backing one horse for a meaningfully higher probability of collecting a return — and the return, if it comes, is likely to be more satisfying than anything the favourite’s price can offer.

Current 2026 Favourite: Iroko and the Challengers

As the 2026 Grand National approaches, Iroko sits at the top of the ante-post market. Trained by Oliver Greenall and Josh Guerriero, the gelding finished fourth in the 2025 Grand National as the 13/2 favourite before bolstering his credentials with a win at Ascot in December, and his staying credentials over three miles and beyond mark him as a horse with the stamina profile this race demands. With Willie Mullins responsible for the last two Grand National winners — Nick Rockett and I Am Maximus — the Irish contingent remains formidable, but Iroko’s position at the head of the market represents a rare British challenge for favouritism.

Behind Iroko, the market features the defending champion Nick Rockett and I Am Maximus, who won in 2024 and would be seeking to become the first horse since Tiger Roll to win the race twice. Both carry the advantage of Aintree experience — they know the fences, they know the distance, and their connections know the specific demands of the race. For I Am Maximus in particular, the weight question looms: a repeat winner inevitably carries a higher mark, and the extra burden could be the difference between victory and a mid-field finish.

The composition of the 2026 entry list adds another layer to the favouritism debate. According to horseracing.guide, the total number of entries has dropped from 126 in 2015 to just 78 in 2026 — a decline of roughly 13% per year. Of those 78 entries, only 29 are from British-based trainers. Irish trainers dominate the entry list, with Willie Mullins and Gordon Elliott accounting for a substantial share of the quality entries. This concentration of Irish talent at the top of the market has implications for how the favourite is determined: the leading Irish-trained horses often attract early support from well-informed punters who follow the Irish form circuits closely, which can shorten their prices before the broader public even begins to engage with the race.

Should the market’s confidence in Iroko concern you? Not necessarily. Being favourite in the Grand National is a statement about relative probability, not about certainty. Even if Iroko is the most likely individual winner, the historical data says there is an 85% chance that something else crosses the line first. The question is not whether Iroko can win — he clearly can — but whether his price adequately reflects the Grand National’s capacity to upset even the best-laid plans. If he goes off at 5/1 or 6/1, the historical evidence suggests you are overpaying for what amounts to a one-in-six chance in a race where 33 other horses are also trying to win.

Should You Back the Favourite?

The data does not say “never back the Grand National favourite.” It says “understand what you are buying.” A 15% win rate means the favourite will win occasionally — and when it does, the collective vindication feels enormous. Tiger Roll in 2019 and I Am Maximus in 2024 were popular winners precisely because they were favourites, and the public rarely cheers louder than when the obvious choice delivers.

But if your goal is to maximise the probability of a return — particularly a meaningful return relative to your stake — the numbers point elsewhere. The value zone between 14/1 and 33/1 produces more winners over time, at prices that turn a small each-way bet into a memorable payout. A £5 each-way bet on a 25/1 winner returns over £160. The same outlay on a 6/1 favourite that wins returns around £52. The difference is not trivial.

The practical recommendation for 2026: if you want to back the favourite, consider doing so as part of a broader strategy rather than as your only bet. A small win-only stake on Iroko combined with an each-way selection or two in the 16/1 to 33/1 range gives you exposure to both the favourite’s class and the race’s inherent unpredictability. You are not choosing between the favourite and the field — you are acknowledging that the Grand National, more than any other race, belongs to both.

The favourite’s false promise is not that it cannot win. It is that it probably will not — and the odds rarely compensate you enough for the times it does not.