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Backing a horse weeks or months before the race can land you a price you will never see again, or lose your stake before the tapes go up. How ante-post betting works, when non-runner no bet changes the maths, and how to approach the big festivals.
By Horse.bet Team · Updated 23 October 2026
The basics
Ante-Post Betting Explained: Backing a Horse Before Race Day
An ante-post bet is one struck well before the day of the race. For the Classics and the biggest jumps races, the markets open a year or more in advance: prices for the next Gold Cup and the next Derby are available by the autumn, and the following year’s Grand National market can be up within days of the last one finishing.
Only a small fraction of British races carry an ante-post market, around one in a hundred according to the Racing Post, and they are the races that matter most: the Cheltenham Festival championships, the Grand National, the Guineas, the Derby and the Oaks, the big Royal Ascot races, and major handicaps such as the Ebor once the summer form has taken shape.
Ante-post betting normally runs until the declaration stage for the race. For most races that is the morning before; for a few, including the Grand National, final declarations come 48 hours before the off. Once runners are declared, the race moves into the day-of-race market, with its own rules on non-runners and prices.
The appeal is the price. The more uncertainty there is about whether a horse will run, which race it will go for and what the ground will be like, the bigger the odds a bookmaker will offer. If your horse turns up and wins, an ante-post bet can return several times what the same stake would have made at the starting price. If it does not turn up, the stake is usually gone.
The key rule
All-In, Run or Not: The Rule That Defines Ante-Post
Standard ante-post bets are all-in, run or not. If your horse is injured, rerouted to another race, balloted out or simply not declared, you lose your stake. That is the trade you make for the bigger price, and it is the single most important thing to understand before striking an ante-post bet.
The most famous recent example came at Cheltenham in 2024. Constitution Hill, the reigning Champion Hurdle winner, was ruled out by Nicky Henderson on 4 March, eight days before the race, after a poor piece of work at Kempton and unsatisfactory blood tests. Anyone holding a standard ante-post bet on him lost their money. State Man won the race as the 2/5 (1.4) favourite.
Worked example
In December you back a Champion Hurdle contender at 20/1 (21.0) for £10. By the day it is 5/1 (6.0).
If it runs and wins: £10 × 20 = £200 profit, a £210 return, against £60 at the 5/1 starting price.
If it runs and loses: you lose £10. If it misses the race: you also lose £10, unless the bet was non-runner no bet.
An illustration, not a real result.
Two things work in your favour. First, ante-post bets are not subject to Rule 4: if a rival is withdrawn, your winnings are not reduced, whereas a bet struck on the day would be. Our guide to Rule 4 deductions explains why that matters in big fields. Second, if the conditions of the race itself are changed before it is run, Tattersalls Committee rules entitle you to a refund. When Cheltenham announced in September 2024 that the Grade 1 Turners Novices’ Chase would become a novice handicap, bookmakers including bet365, Paddy Power, Sky Bet, Betfair, BetMGM and Betfred refunded ante-post stakes on the race.
The safety net
Non-Runner No Bet: Ante-Post With Insurance
Non-runner no bet (NRNB) removes the biggest risk. If your horse does not run, the bet is void and your stake comes back. Bookmakers offer it on selected ante-post markets, most often in the run-up to the big festivals, and the terms are shown on the market itself. bet365, for example, applies NRNB on selected ante-post races, refunding win and each-way stakes placed after the concession starts.
The timing varies by bookmaker and by race. William Hill went non-runner money back on all 28 races at the 2024 Cheltenham Festival from New Year’s Day, the first bookmaker to cover the whole meeting. For the Grand National, some firms go NRNB months before the race and others only a week or two out; William Hill’s terms run until the final declarations 48 hours before the race, and refund stakes on horses that are balloted out of the 34-runner field.
The cost of NRNB is the price. Once a market goes non-runner no bet, the odds on the leading contenders usually shorten, because the bookmaker no longer collects on horses that miss the race. The choice is between a bigger price with all the risk and a smaller price with the insurance.
Bet type
Typical price
If the horse wins
If it does not run
Standard ante-post
Biggest
Paid at the price taken
Stake lost
Ante-post with NRNB
Shorter
Paid at the price taken
Stake returned
On the day with BOG
Shortest
Paid at the bigger of your price and the SP
Stake returned
In multiples, a non-runner under NRNB is treated as void and the bet settles on the remaining selections, so an ante-post treble becomes a double.
Weighing it up
Price Versus Risk: When an Ante-Post Bet Makes Sense
An ante-post bet is a bet on two things: that the horse will run in the race, and that it will win. A good ante-post price is one that pays you properly for both.
Worked example: three ways to back the same horse
A £10 win bet on the same horse, struck at three different stages: 20/1 (21.0) ante-post in the autumn, 12/1 (13.0) non-runner no bet in the final month, or 8/1 (9.0) on the day.
If it runs and wins, the returns are £210, £130 and £90.
If it is ruled out, the returns are £0, £10 and £10 (no bet was ever struck on the day).
The ante-post bet returns £80 more than NRNB if the horse wins, and £10 less if it does not run. Whether that is worth it depends on how confident you are that the horse will get there. Illustrative prices only.
Some patterns help.
Horses with one obvious target are safer ante-post bets than versatile ones. A staying chaser aimed all season at the Gold Cup carries less route risk than a horse whose connections could choose between two or three Festival races.
Trainers with big strings often have several candidates for the same race and decide late. That can leave ante-post backers of the second string without a runner.
Ground dependency matters. A horse that needs soft ground is a riskier ante-post bet for a race run in a dry spring.
The trials move the market. Cheltenham’s trials meetings, the spring Guineas trials and the Dante at York reshape prices. Backing before them gets the bigger price; backing after them gets more information.
Exchanges add another option. Smarkets and Matchbook run ante-post win markets on the big races, and if your horse’s price shortens you can lay it back to lock in some profit before the race. Betfair Starting Price is not available on ante-post markets, so you bet at the price on offer.
The big markets
Ante-Post Betting on Cheltenham, the Grand National and the Derby
Cheltenham Festival
The Cheltenham Festival is the heart of ante-post jumps betting. The championship markets for March are open through the winter, and they move on every big trial through the winter. The risk is route: the largest stables often hold several entries for the same race, and the final picture only becomes clear at declarations. That is why NRNB in the closing weeks has become so popular. Course details and runners appear on our Cheltenham racecourse page.
Grand National
The Grand National is the hardest ante-post race of all. The field is capped at 34, down from 40 before 2024, and many of the names in an early market will never make the final line-up: they are campaigned elsewhere, fail to make the cut on handicap ratings, or meet with a setback. The next year’s book opens almost as soon as the last one is run; William Hill priced up the 2027 race three days after I Am Maximus won his second National in April 2026. For most punters, the National is a race to bet once NRNB is on offer or after the final declarations at Aintree.
The Derby and the Classics
Flat ante-post betting centres on the Classics. The 2,000 Guineas and the Derby markets form during the two-year-old season, when the big autumn races at Newmarket and the Curragh decide the winter favourites. The risk is different from jumps racing: a juvenile champion may not stay a mile and a half, may be rerouted to the French Derby, or may not train on at three. Backing a horse for the Derby at Epsom in the autumn is a bet on stamina, temperament and the trainer’s plans as much as on talent.
Royal Ascot and the big handicaps
The Royal Ascot markets open months before June, with most of the movement coming in the final six weeks after the spring Group races and the Guineas. Big handicaps such as the Ebor carry an extra layer of risk: with the field capped at 22, a horse can miss the cut as well as be withdrawn, which is why NRNB terms carry real value there.
The small print
Best Odds Guaranteed, Rule 4 and Each-Way Terms on Ante-Post Bets
Best Odds Guaranteed does not apply.BOG covers bets struck on the day from the bookmaker’s start time. bet365, William Hill, Ladbrokes, Paddy Power, Sky Bet and Betfred all exclude ante-post bets from their BOG terms, so if your horse drifts before the race you are paid at the price you took, and if it shortens, the bigger price is already yours.
Rule 4 does not apply to standard ante-post bets when other runners are withdrawn.
Each-way terms are fixed by the market you bet into. Check the places and fraction shown on the ante-post market when you place the bet; they may differ from the terms offered on the day, when bookmakers often add extra places.
Your bet is on a named race. If your horse runs in a different race at the same meeting, the bet is still a loser unless NRNB terms say otherwise.
Check potential returns, including each-way parts, on our bet calculator before you commit.
Before you bet
Ante-Post Betting Checklist
Is the horse’s target clear? Look for quotes from the trainer naming the race.
Is the price big enough? Compare it with what you would expect on the day; a small difference does not justify the risk.
Is NRNB available yet? If it is, compare the NRNB price with the standard one.
What could go wrong? Ground, a rival target, the handicapper, a ballot or a setback.
Can you afford to lose it months early? An ante-post stake is tied up until the race, and a non-runner means it is gone well before the off.
Ante-post betting rewards patience and research, but it is still betting. Keep stakes within a budget you set in advance, and if it stops being fun, GambleAware.org offers free, confidential support. Betting is for over-18s only.
★ Racing offers
Where to bet ante-post on the big races
UK Gambling Commission-licensed bookmakers, offers checked . New customers, 18+. Significant terms under each offer.
New bet365 customers only. Min deposit requirement. Free Bets are paid as Bet Credits and are available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Registration required. The bonus code 365GMBLR can be used during registration but does not change the offer amount in any way. Time limits and T&Cs apply. 18+. GambleAware.org
New customers only. Opt in, deposit £10+ and place a first bet of £10+ on any football market at odds of 2.00 (1/1) or bigger within 7 days of registering. On settlement receive a £5 football acca (2+ selections), £5 Bet Builder (3+ selections), £5 Lucky Dip and 1 x 100% Win Boost (max £10 stake, selected football markets); 24 hours later a £10 acca (2+ selections) and £5 Bet Builder (3+ selections). Horse racing bets do not qualify. Free bets expire 7 days after credit. Time limits and T&Cs apply. 18+. GambleAware.org
Use Smarkets code COMMFREE to trade with 0% commission for 60 days. New UK, IE & Malta users only. Min. £10/€10 first deposit only using Debit Card or Instant Banking. First deposits by Skrill, Neteller, PayPal or a virtual/prepaid card (including virtual Monzo cards) do not qualify. Code must be entered at registration. 0% commission applies to bets that settle within 60 days of the first deposit; standard commission applies afterwards. Existing SBK sportsbook users and API/trading-software users not eligible. One per person and household. Full T&Cs apply. 18+. GambleAware.org
New customers only. Sign up with Promo Code REBATE20. Qualifying users receive a 20% rebate on overall qualifying losses recorded in the 30 calendar days from registration, paid as free bets: max £200 rebate per event, £1,000 overall. Free bets expire 7 days after crediting; stake not returned. First deposits by Skrill or Neteller do not qualify. Bets on Matchbook Zero do not count. Only losses on Matchbook Exchange markets count; losses on multiples, Bet Builders, casino or other products are excluded. Full T&Cs apply. 18+. GambleAware.org
Questions
Frequently asked questions
What does ante-post mean in horse racing?
A bet placed well before the day of the race, usually before the final declarations. Prices are bigger, but if the horse does not run, the stake is normally lost.
Do you get your money back if an ante-post horse does not run?
Not on a standard ante-post bet, which is all-in, run or not. You only get your stake back if you bet non-runner no bet, or if the conditions of the race are changed before it is run.
What does NRNB mean?
Non-runner no bet. If your horse does not run, the bet is void and your stake is returned. Bookmakers offer it on selected ante-post markets, usually at shorter prices.
Does Best Odds Guaranteed apply to ante-post bets?
No. Major bookmakers including bet365, William Hill, Ladbrokes, Paddy Power, Sky Bet and Betfred exclude ante-post bets from BOG. You are paid at the price you took.
Does Rule 4 apply to ante-post bets?
No. Standard ante-post bets are not reduced when other horses are withdrawn. Rule 4 applies to bets struck on the day when a runner is withdrawn after the bet.
When does ante-post betting close?
At the declaration stage, usually the morning before the race. For the Grand National, final declarations are made 48 hours before the race.
When do bookmakers go NRNB for Cheltenham?
It varies. William Hill covered all 28 races at the 2024 Festival from 1 January; other bookmakers switch individual markets to non-runner no bet in the weeks before the meeting.
