Which Race at the St Leger Costs the Most to Bet In?

The big handicap, and at the 2026 meeting it was not close. The Betfred Portland (Heritage Handicap) took 39.5% out of a fair book with 21 runners, the dearest race of the week. The cheapest was the Betfred Champagne Stakes (Group 2), which drew 5 runners and took 7.3%.

Before the meeting we said the St Leger Stakes itself would be among the cheapest races on the card. It was not. It sat nearer the middle of the week than the cheap end. The forecast was wrong; the reasoning behind it was not, and it is the same reasoning that put the handicap top of the list. What a race costs has nothing to do with prestige, prize money or the quality of the horses. It is the number of runners.

We have measured the charge built into the starting-price book on every race at every festival we have covered. The relationship between field size and what a race costs to bet in is the strongest pattern in everything we have looked at, and it is close to mechanical.

The St Leger Stakes is a Group 1 (Classic) over 1m 6f 115y for 3yo colts and fillies (no geldings), first run in 1776. Classics draw small, select fields. The sprint handicaps on the same card draw very large ones. Those two facts, and not the billing, decide which race takes more out of your money, and a Classic only lands at the cheap end of a card when its field is small enough to put it there.

What we measured

Every race at every festival we have measured, grouped by how many runners went to post.

Read the overround column down. The biggest fields carry close to three times what the smallest do, and the takeout column says the same thing in the share of stakes that never comes back.

The mechanism is simple enough to check by hand. A bookmaker prices every runner and takes a slice on each one, and the slices at the back of the market are the fattest, because a horse quoted at 66/1 wins considerably less often than one time in sixty-seven. A twenty-runner handicap has several of those. A nine-runner Group race has none.

Sorting the same races by grade instead tells a weaker version of the same story.

Group races look cheap, and they are, but once you allow for field size most of that difference disappears. Group races are cheap because they are small, not because they are good. That distinction is the whole point: if you are picking a race to bet in, do not look for the classy one, look for the short field.

What that means at Doncaster

The meeting ran Thursday to Sunday, with the St Leger Stakes on the Saturday. Field sizes spread from single figures to the low twenties across the four days, at the same track, with the same bookmakers taking the bets, and the charge moved with them.

That spread was worth roughly a threefold difference in what you were charged. It was printed on the racecard, it needed no opinion about a horse, and it was visible before the first race of each day.

We said before the meeting that we would not be telling you what would win the Leger, and we would still be suspicious of anyone who did. What we did say was that history had the race going to the front of the market: Scandinavia at 2/1 favourite in 2025 and Jan Brueghel at 11/4 the year before, both for Aidan O'Brien, who has won the race nine times. The 2026 running ignored all of it. Highwayman won at 11/1 for a different O'Brien, Joseph, ridden by Saffie Osborne.

We have left that here beside what we wrote beforehand. The history was real and it was no use at all on the day, which is about what a pattern read off a handful of runnings is worth. What it could not touch is the thing this page is about. The charge inside each race was settled by the size of the field, before anyone had an opinion about the favourite and regardless of what the favourite then did.

If you want the runners, the times and the rest of the meeting, our St Leger Festival guide has them. This page is only about what the week cost.

Common questions

When is the St Leger run?

The St Leger Stakes is run on the Saturday of the meeting, which spans Thursday to Sunday. It is a Group 1 (Classic) over 1m 6f 115y.

Which race on the card is cheapest to bet in?

Almost always the one with fewest runners. Across every festival race we have measured, the smallest fields carried around a third of the charge the biggest did.

Why do big handicaps cost more?

Each runner priced carries a slice of the bookmaker's charge, and the long-priced runners at the back of the market carry the heaviest. A big handicap has many more of them, and they attract the least scrutiny.

Is the St Leger good value then?

Cheaper than the big handicaps around it and dearer than the small-field Group races on the same card, which is field size doing the work rather than the Classic billing. The clearest sign of it at the 2026 meeting was a Group 3 that drew a big field costing more to bet in than the Group 1 that drew a modest one. Cheaper is also not the same as profitable: no approach we have tested across 30,701 races makes money, and a Classic is no exception.

Who has won the St Leger most recently?

Highwayman took the 2026 running at 11/1, trained by Joseph O'Brien and ridden by Saffie Osborne. Before him, Scandinavia in 2025 and Jan Brueghel in 2024, both trained by Aidan O'Brien, who has won the race nine times in total.

Do you tip the St Leger?

No. Everything here is published research, including every losing figure, and there is nothing to subscribe to.

A word on all of this

None of these pages is a tip, and none describes a way to win. If your betting has stopped being fun, BeGambleAware has free, confidential help, and the National Gambling Helpline is on 0808 8020 133.