The 2027 Grand National takes place at Aintree on Saturday 10 April at 4.00pm. Grand National betting odds can differ between bookmakers, and prices can change before the final runners are declared.

Comparing Grand National odds involves more than finding the biggest price beside a horse’s name.

The type of market, non-runner terms, each-way places and place fraction can all affect the value of a bet.

Ante-post markets can contain horses that will not make the final field. A horse appearing in the betting is therefore not a confirmed runner.

This page explains how to compare Grand National prices and understand the terms available before and after the final declarations.

Grand National Betting Odds 2027

Grand National ante-post prices can be available before the final field is declared.

The odds offered on a horse may change following a race, an update from its connections, the publication of the handicap weights or a change in the expected ground.

A price should be treated as current only when it has been checked against an available bookmaker market. A predicted price is not a bookmaker offer.

The maximum Grand National field is 34 runners, but ante-post markets can contain considerably more potential participants.

Our Grand National runners and riders page follows the developing field.

How to Compare Grand National Betting Odds

Two bookmakers can offer different prices on the same horse.

For example, a £10 win bet at 14/1 returns £150 if successful, including the original stake. The same bet at 20/1 returns £210.

The difference is £60, even though the selection and stake are identical.

£10 Win Bet	Profit if Successful	Total Return
14/1	£140	£150
16/1	£160	£170
20/1	£200	£210

These are calculation examples, not current Grand National prices.

The comparison is straightforward for an ordinary win bet. Each-way bets require an additional check because bookmakers can offer different numbers of places and place fractions.

A bookmaker offering the highest win price will not necessarily offer the most favourable each-way return.

Grand National Ante-Post Odds

Ante-post odds are prices offered before the final field is declared.

A horse’s price may shorten after a strong performance, drift following a disappointing run or disappear if its connections decide not to target the race.

An ante-post market can contain considerably more horses than the maximum field of 34.

What Happens if an Ante-Post Selection Does Not Run?

Under ordinary ante-post terms, a bet generally loses if the selected horse does not take part.

This differs from a qualifying non-runner, no bet market.

Before placing an ante-post bet, check the exact market name and settlement conditions. Do not assume that a bookmaker’s race-day refund terms apply to an early wager.

Should You Take an Early Grand National Price?

An early price fixes the odds for the bet, subject to its terms.

That price could be bigger or smaller than the one available closer to the race. The horse could also fail to make the final field.

A shorter price with non-runner protection and a bigger ordinary ante-post price are different propositions.

Compare the potential return alongside what happens if the horse does not run.

Grand National Non-Runner No Bet Odds

Non-runner no bet, often shortened to NRNB, is a market in which a qualifying stake is returned if the selected horse does not run.

Bookmakers can introduce NRNB at different points in the build-up to the Grand National.

It should not be assumed to apply to every ante-post market or every bet placed with a bookmaker.

The market’s terms at the time of the bet determine whether the stake qualifies for a refund.

Market	If the Horse Does Not Run
Ordinary ante-post	Stake generally loses
Qualifying non-runner, no bet	Stake returned under the offer’s terms
Race-day bet on a declared non-runner	Settled under the applicable non-runner rules

A horse that starts and then falls, unseats its rider or is pulled up is not a non-runner.

Our non-runners guide explains the difference.

Grand National Win Odds

A win bet pays only if the selected horse wins the race.

Fractional odds show the profit relative to the stake.

At 10/1, a successful £10 win bet makes £100 profit and returns £110 in total.

At 20/1, the same stake makes £200 profit and returns £210.

A bigger price produces a bigger return if the bet wins, but it does not mean the horse is more likely to win.

The odds represent the bookmaker’s offered price, which includes its commercial margin. They should not be treated as an exact, independent measurement of a horse’s chance.

For more examples, see our horse racing betting odds guide.

Grand National Each-Way Odds

An each-way bet contains two equal parts: a win bet and a place bet.

A £10 each-way bet costs £20 in total.

The win part is settled at the horse’s full odds if it wins. The place part is settled at a fraction of those odds if the horse finishes in one of the qualifying paid positions.

The number of places and place fraction are determined by the market terms when the bet is placed.

Example: £10 Each-Way at 20/1

Assume the bookmaker offers six places at one-fifth of the win odds.

The total stake is £20: £10 to win and £10 to place.

If the horse finishes fifth, the win part loses. The place part is settled at 4/1, producing £40 profit and returning £50 including the £10 place stake.

The total return is £50 against the original £20 outlay, giving a £30 net profit.

If the bookmaker instead paid only four places, a fifth-place finish would not qualify for the place payout.

The example shows why the number of places matters as much as the headline win odds.

How Many Places Do Bookmakers Pay in the Grand National?

The standard each-way terms for a handicap with 16 or more runners are four places at one-quarter of the odds.

Bookmakers can offer additional places for the Grand National, often with a different place fraction.

The precise offer can depend on the bookmaker, market, time of the bet and number of runners.

A six-place offer should not be described as better than a four-place offer without considering the place fraction and odds available.

Our Grand National each-way places page explains the standard terms and extra-place calculations.

Are Extra Places Worth a Shorter Price?

Extra places increase the number of finishing positions that can qualify for a payout.

However, a bookmaker may offer shorter win odds or a smaller place fraction in its extra-place market.

For a horse at 20/1, one-quarter of the odds is 5/1 for the place part, while one-fifth is 4/1.

A four-place market at one-quarter pays more on the place part for a horse finishing in the first four, assuming the same win price and stake.

A six-place market at one-fifth also pays for fifth and sixth.

Which terms suit a particular bet depends on the price and the finishing positions covered.

Our extra-place betting sites page explains the wider market.

Grand National Best Odds Guaranteed

Best Odds Guaranteed, or BOG, is a bookmaker offer that can pay at the bigger of the qualifying early price and the official starting price.

It does not apply automatically to every Grand National bet.

Ordinary ante-post wagers are generally excluded. Enhanced odds, extra-place markets and other special offers may also have different conditions.

Check the bookmaker’s qualifying time, eligible markets and exclusions before relying on BOG.

A bet placed in a market that does not qualify will be settled under that market’s own terms.

What Is the Grand National Starting Price?

The starting price, or SP, is the official price returned when the race starts.

A bettor can choose to take an available fixed price or place an SP bet, depending on the market.

With a fixed-price win bet, the odds are established when the bet is accepted, subject to the applicable rules. An SP bet is settled at the official starting price.

A horse’s price can move considerably between the ante-post stage and the start of the race.

An early price is not automatically better than SP, and SP is not automatically better than an early price. The outcome depends on the prices involved.

Why Do Grand National Odds Shorten or Drift?

A horse’s price shortens when its fractional odds become smaller. It drifts when the odds become bigger.

Market movements can follow new information, including a horse’s recent performance, a change in its intended programme, the publication of the handicap weights or a jockey booking.

Ground conditions and the withdrawal of other contenders can also affect the market.

Betting activity may contribute to price movements, but a shortening price is not proof that a horse will run well.

A market move should be considered alongside the information that caused it.

How Do Grand National Weights Affect the Odds?

The Grand National is a handicap, so the weight allocated to each horse is relevant to the market.

A horse’s price may change when the weights are published because bettors and bookmakers can assess its handicap position more precisely.

The initial weights are not the final declarations. A horse can remain in the weights list and still fail to make the field.

Our Grand National weights page explains the handicap.

How Does the Going Affect Grand National Prices?

Ground conditions can influence a horse’s chance of staying the distance and performing to its previous level.

A horse with strong form on soft ground may attract support if rain is forecast. Another may drift if the expected conditions are less suitable.

Forecasts are not the official race-day going. The ground can change during the build-up to the meeting.

Check the official description and the horse’s record on comparable surfaces before using the going as a reason to take or reject a price.

Our going guide explains the descriptions used in British racing.

Grand National Favourite Odds

The favourite is the horse with the shortest price in the betting market.

There may be joint-favourites if two or more horses share the shortest price.

Favourite status can change before the race, and the ante-post favourite may not be the starting-price favourite.

A favourite is not guaranteed to win. The Grand National’s distance, fences and large field create a demanding test even for horses with strong form.

The relevant betting question is whether the available odds adequately reflect the horse’s chance, not simply whether it heads the market.

Grand National Outsider Odds

The Grand National has produced long-priced winners, including Foinavon in 1967 and Mon Mome in 2009, both at 100/1.

Those results are part of the race’s history, but they do not make every outsider a value bet.

A long-priced horse may have a credible chance of outperforming market expectations. It may also have significant concerns about stamina, jumping, current form or participation.

Assess the horse’s record and the reasons behind its price.

For horse-by-horse analysis rather than an odds comparison, see our Grand National tips page.

Grand National Betting Sites to Compare

A useful bookmaker comparison should show the actual price and terms attached to it.

For Grand National betting, compare the available win odds, each-way places, place fraction, non-runner protection and withdrawal rules.

British Racecourses covers established horse racing bookmakers including bet365, William Hill, Betfred, BoyleSports, BetVictor, Ladbrokes and Coral.

Not every bookmaker will offer the same markets or promotions at the same time. A bookmaker’s general racing features should not be presented as a confirmed Grand National promotion.

Our horse racing betting sites page covers the wider features of bookmakers, while the horse racing betting apps page focuses on the mobile experience.

Grand National Betting Odds FAQs

When is the 2027 Grand National?

The race takes place at Aintree on Saturday 10 April 2027 at 4.00pm.

Are the 2027 Grand National odds available?

Ante-post markets can be available before the final field is declared. Prices should be checked against a current bookmaker market.

Are horses in the ante-post betting confirmed runners?

No. A horse appearing in an ante-post market is not necessarily a confirmed runner.

How many horses can run in the Grand National?

The maximum field is 34 runners.

What happens if my ante-post selection does not run?

Under ordinary ante-post terms, the stake generally loses. A qualifying non-runner, no bet market has different refund terms.

How many places are paid in the Grand National?

Standard terms for a handicap with at least 16 runners are four places at one-quarter of the odds. Bookmakers may offer additional places under separate terms.

Are extra places always better?

No. Compare the number of places, place fraction and win price together.

Does Best Odds Guaranteed apply to ante-post Grand National bets?

Ordinary ante-post bets are generally excluded. Check the terms of the exact market before placing a wager.

What is the difference between a fixed price and SP?

A fixed price is agreed when the bet is accepted, subject to the applicable rules. An SP bet is settled at the official starting price.

What does it mean when a horse’s odds shorten?

Its fractional price becomes smaller. That can reflect market activity or new information, but it does not guarantee a strong performance.

Where can I find the confirmed Grand National field?

Our Grand National runners and riders page follows the official declarations.

Summary

Grand National betting odds should be compared using current prices and the terms attached to each market.

The 2027 race takes place on Saturday 10 April at 4.00pm, but the final field has not yet been declared. Ante-post prices can change, and a horse listed in the betting is not necessarily a confirmed runner.

For a win bet, compare the available price. For an each-way bet, compare the price, number of places and place fraction. Before betting early, establish whether the market is ordinary ante-post or non-runner no bet.

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