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Mares' allowance: how mares and fillies do in open races

How mares do against geldings in open jumps races, and fillies against colts and geldings in open Flat races, with strike rate The current season rows update after every racing day.

Results to 17 October 2026 · Refreshed 18 October 2026
242
Open jumps wins by mares this season

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Key takeaways

  • Mares win 7.5% of their runs in open jumps races against 11.4% for geldings, though mares tend to start at longer prices.
  • Open races on the mares' allowance page exclude any race restricted by sex in its conditions or with Mares, Fillies, Colts or Geldings in its title.

Mares v geldings in open jumps races, by race type

Chase10.0%12.8%11,775123,456
Hurdle7.0%10.5%45,856204,707
NH Flat6.9%11.4%6,07625,807

Open races = no sex restriction in the race conditions and no Mares, Fillies, Colts or Geldings in the race title, so mares-only races are excluded. Mares include fillies. British and Irish jumps, 2016/17 to 2025/26.

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Mares v geldings, handicaps and non-handicaps

Chase non-handicaps9.9%14.5%2,84627,181
Chase handicaps10.1%12.3%8,92996,275
Hurdle non-handicaps5.8%11.5%17,39085,543
Hurdle handicaps7.7%9.7%28,466119,164
NH Flat non-handicaps6.8%11.4%5,94225,552
NH Flat handicaps9.0%9.8%134255

Same open races, 2016/17 to 2025/26, split by handicap status.

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Mares v geldings by class

Class 111.5%10.0%86815,480
Class 210.2%11.5%1,03118,515
Class 311.3%14.2%2,70539,071
Class 48.6%12.9%13,44598,417
Class 58.3%11.3%13,67064,854
Class 65.8%13.6%5363,227
No class (Ireland)6.3%9.2%31,452114,406

Open jumps races by official class, 2016/17 to 2025/26. Irish races are mostly unclassified. Min 100 runs per group.

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Mares v geldings by season

2016/177.8%11.2%5,81539,290
2017/187.5%11.7%5,53535,845
2018/197.4%11.2%6,72138,160
2019/207.7%11.3%5,75530,704
2020/217.3%10.4%6,47135,844
2021/227.3%11.4%6,99938,599
2022/238.2%11.5%6,60635,291
2023/247.5%11.7%6,29333,508
2024/257.0%11.4%7,14835,219
2025/267.7%11.9%6,36431,510
2026/27 to date8.1%12.0%2,97410,347

Open jumps races, one row per season from 2016/17, current season to date.

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Flat win % in open races by month: fillies v colts and geldings
Fillies and maresColts, geldings and entires
5%7.5%10%12.5%15%JanFebMarAprMayJunJulAugSepOctNovDecFillies and mares Jan: 8%Fillies and mares Feb: 8%Fillies and mares Mar: 7.5%Fillies and mares Apr: 8.5%Fillies and mares May: 8.9%Fillies and mares Jun: 9.6%Fillies and mares Jul: 10.3%Fillies and mares Aug: 9.9%Fillies and mares Sep: 8.8%Fillies and mares Oct: 7.6%Fillies and mares Nov: 7.4%Fillies and mares Dec: 7%7%Colts, geldings and entires Jan: 12.3%Colts, geldings and entires Feb: 12.5%Colts, geldings and entires Mar: 11.8%Colts, geldings and entires Apr: 11.1%Colts, geldings and entires May: 10.9%Colts, geldings and entires Jun: 10.7%Colts, geldings and entires Jul: 11.2%Colts, geldings and entires Aug: 11.1%Colts, geldings and entires Sep: 10.5%Colts, geldings and entires Oct: 9.8%Colts, geldings and entires Nov: 10.2%Colts, geldings and entires Dec: 11%11%

Win % by Month

Fillies v colts and geldings in open Flat races, by age

2yo8.8%11.9%28,63164,289
3yo9.0%12.6%68,368126,709
4yo8.8%11.2%38,72092,553
5yo+8.4%9.3%35,050185,360

Open races (no sex restriction), British and Irish Flat, 2016 to 2025. Fillies includes mares; colts and geldings includes entires.

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Fillies v colts and geldings by month

Jan8.0%12.3%9,11723,496
Feb8.0%12.5%6,55819,104
Mar7.5%11.8%7,04322,064
Apr8.5%11.1%11,02435,440
May8.9%10.9%15,78747,664
Jun9.6%10.7%19,55457,951
Jul10.3%11.2%20,59056,446
Aug9.9%11.1%21,90357,705
Sep8.8%10.5%19,89453,706
Oct7.6%9.8%19,26048,023
Nov7.4%10.2%11,33225,483
Dec7.0%11.0%8,70721,829

Open Flat races, 2016 to 2025, by calendar month.

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Fillies v colts and geldings by season

20169.2%10.9%16,18745,918
20178.6%10.9%16,29947,253
20188.6%11.0%16,94848,147
20198.5%10.6%18,05048,274
20208.2%10.5%15,34440,708
20218.5%11.2%18,16548,754
20228.9%11.1%17,65546,504
20239.1%10.9%17,76447,229
20248.8%10.9%17,51748,521
20259.1%11.1%16,84047,603
2026 to date9.2%11.2%14,57439,578

Open Flat races, one row per year from 2016, current year to date.

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Do mares win their share of open jumps races?

Public racing records and results from Britain and Ireland.

How were open races identified?

A race counts as open when its conditions carry no sex restriction and its title has no Mares, Fillies, Colts or Geldings. Mares-only races are therefore excluded.

Do mares do better in hurdles or chases?

The race type table also splits bumpers and the handicap table splits handicaps.

How do fillies do against colts on the Flat?

The age and month tables show where the gap is widest.

How are mares doing this season?

The season tables add a row for the current season, updated daily.

Questions people ask

What is the mares' allowance?

The mares' allowance is a weight concession given to mares and fillies when they race against male horses in many races. The size of the allowance depends on the code and the type of race.

Do mares win as often as geldings over jumps?

Mares win 7.5% of their runs in open jumps races against 11.4% for geldings.

Which races count as open races here?

Open races have no sex restriction in their conditions and no Mares, Fillies, Colts or Geldings in their title. Races confined to mares or fillies are left out of every comparison.

Do fillies beat colts on the Flat?

Among 3yos the figures are 0.98 and 1.02.

How often is the mares' allowance page updated?

The current season rows refresh after every racing day from British and Irish results. The ten-season tables change when a season ends.

More free data

Weight-for-age3yos v older horses on the Flat and young hurdlers v older.Win rate by ageStrike rate by age for Flat and jumps runners.Win rate by classHow results change with the class of race.Weight changesHow horses do when their weight goes up or down.Racing reportsMonthly reports and the annual review

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