Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Home / Free Data / Trainer / Aidan O'Brien

Trainer profile

Aidan O'Brien

Base: Cashel, Co Tipperary
Region: IRE

View yard file

Flat 2026 (GB & IRE): 104 wins from 551 runs (19%)
Prize money Flat 2026 (GB & IRE): £8,658,659 GB · €5,534,921 IRE
Last 14 days (GB & IRE): 6 wins from 40 runs (15%)
Last winner (GB & IRE): 4 days ago: Bengal Tiger (IRE), Naas (IRE)
Career (GB & IRE since 1993): 4,305 wins from 22,113 runs (19%)

Next entry · 15 Oct · 13:02 Curragh · Irish EBF Median Sires Series Maiden

Stats

Flat · by race type


Flat Turf non-handicap	2,570	588	22.9%	720	£33,905,557	€27,352,109
Flat Turf handicap	219	30	13.7%	47	£461,966	€1,578,824
Flat AW non-handicap	140	38	27.1%	43	£24,209	€559,193
Flat AW handicap	21	1	4.8%	9	£0	€40,690

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by course


Curragh (IRE)	753	168	22.3%	190	£0	€17,838,493
Leopardstown (IRE)	429	94	21.9%	135	£0	€6,433,568
Naas (IRE)	235	65	27.7%	63	£0	€1,592,527
Ascot	204	30	14.7%	36	£9,031,670	€0
Dundalk (AW) (IRE)	154	37	24.0%	49	£0	€575,483

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by month


March	77	21	27.3%	26	£0	€471,189
April	271	64	23.6%	85	£179,004	€1,364,569
May	413	114	27.6%	112	£2,874,270	€4,609,358
June	428	94	22.0%	100	£12,810,814	€4,581,845
July	396	80	20.2%	123	£6,093,025	€4,109,625

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by distance


5f to 6f	521	126	24.2%	134	£3,411,972	€3,513,231
7f to 1m	1,219	275	22.6%	372	£7,591,229	€10,752,112
9f to 11f	628	133	21.2%	164	£6,976,779	€6,640,912
12f to 13f	415	81	19.5%	111	£10,978,461	€5,810,506
14f and over	167	42	25.1%	38	£5,433,290	€2,814,057

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by going


Heavy	282	60	21.3%	85	£679,504	€1,139,714
Soft	446	93	20.9%	132	£5,177,520	€3,916,084
Good to Soft / Yielding	511	94	18.4%	137	£3,813,089	€5,584,828
Good	1,173	299	25.5%	321	£8,807,686	€17,538,715
Good to Firm / Firm	377	72	19.1%	92	£15,889,724	€751,593

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by class


Group 1	402	69	17.2%	92	£24,987,192	€13,912,602
Group 2	238	54	22.7%	68	£4,477,629	€2,876,109
Group 3	419	86	20.5%	104	£2,411,075	€3,153,704
Listed	345	65	18.8%	84	£1,105,607	€1,930,055
Class 2	74	10	13.5%	24	£1,329,668	€0

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by horse age


2yo	1,232	329	26.7%	393	£6,593,257	€10,587,207
3yo	1,530	279	18.2%	376	£20,907,109	€15,270,978
4yo	128	33	25.8%	33	£3,995,186	€2,734,317
5yo	36	5	13.9%	13	£1,183,242	€317,550
6yo	12	8	66.7%	1	£1,109,188	€553,950

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by field size


2 to 5 runners	241	86	35.7%	105	£5,000,617	€3,321,180
6 to 8 runners	854	209	24.5%	274	£11,491,987	€13,128,372
9 to 12 runners	1,056	216	20.5%	270	£9,444,088	€8,663,927
13 to 16 runners	575	111	19.3%	126	£5,441,216	€2,081,570
17+ runners	224	35	15.6%	44	£3,013,824	€2,335,768

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by days since last run


Debut	498	90	18.1%	132	£69,527	€1,398,395
1 to 14 days	397	71	17.9%	116	£2,892,376	€3,629,982
15 to 30 days	946	241	25.5%	278	£13,841,127	€13,745,692
31 to 60 days	577	144	25.0%	132	£13,834,273	€6,709,019
61 to 120 days	148	30	20.3%	39	£1,381,752	€1,754,084

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by first-time headgear


First time headgear	239	39	16.3%	52	£860,643	€807,668
Headgear (worn before)	450	68	15.1%	113	£2,296,482	€2,866,954
No headgear	2,261	550	24.3%	654	£31,234,607	€25,856,195

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by jockey (top 20)


Ryan Moore	1,013	336	33.2%	300	£25,779,103	€17,034,126
Wayne Lordan	873	171	19.6%	247	£3,744,263	€5,337,049
Seamie Heffernan	313	63	20.1%	86	£98,785	€1,763,025
Jack Cleary	204	29	14.2%	58	£0	€1,102,604
Ronan Whelan	110	15	13.6%	29	£1,197,445	€1,258,989

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Flat · by owner (top 20)


Coolmore	1,074	231	21.5%	289	£12,643,371	€10,070,382
M Tabor & D Smith & Mrs J Magnier & Westerberg	274	52	19.0%	71	£3,296,395	€3,177,968
Mrs John Magniermichael Taborderrick Smithwesterberg	246	56	22.8%	71	£1,785,496	€2,400,993
Westerberg, Mrs J Magnier, M Tabor, D Smith	220	49	22.3%	65	£2,185,975	€3,351,988
D Smith, Mrs J Magnier, M Tabor, Westerberg	214	43	20.1%	63	£1,047,103	€1,324,090

Flat seasons 2022 to date, GB and IRE.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Record by season (last 10)


2026	Flat	551	104	18.9%	148	£8,658,659	€5,534,921	69/171	134	417
2025	Flat	614	143	23.3%	162	£8,118,659	€6,881,220	98/171	136	478
2024	Flat	654	162	24.8%	197	£8,338,346	€6,217,500	116/183	155	499
2023	Flat	568	128	22.5%	168	£6,456,282	€6,468,288	88/165	122	446
2022	Flat	563	120	21.3%	144	£2,819,786	€4,428,888	84/161	84	479

GB and IRE. Flat seasons are calendar years; jumps seasons follow the official British and Irish dates. Current season is to date.

Additional research statistics and historical returns are in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Full breakdown in the RaceWatch app.

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.

Matched or beat their market rank


Last 14 days	40	21	52.5%
Flat 2026	551	257	46.6%

Results-only market proxy: share of runners that finished in the same place as, or better than, their SP rank (favourite = 1). Not a ratings-based running-to-form figure. Season figure refreshed nightly.

Quick answers

Where is Aidan O'Brien based?: Aidan O'Brien is a racehorse trainer based in Cashel, Co Tipperary, Ireland.
How many winners has Aidan O'Brien had this season?: In the 2026 Flat season, Aidan O'Brien has trained 104 winners from 551 runners in Britain and Ireland (19%).
How much prize money has Aidan O'Brien won this season?: Aidan O'Brien's runners have won £8,658,659 in Britain and €5,534,921 in Ireland in the 2026 Flat season.
How many winners has Aidan O'Brien trained in total?: Aidan O'Brien has trained 4,305 winners from 22,113 runners in Britain and Ireland since 1993 (19%). Runners abroad are not included.
How much prize money has Aidan O'Brien won in total?: Aidan O'Brien's runners have earned £116,587,476 in Britain and €124,977,920 in Ireland since 1993. Runners abroad are not included.
How many Group or Grade 1 races has Aidan O'Brien won?: Aidan O'Brien has won 139 Group or Grade 1 races in Britain and Ireland in the last 10 years, most recently with Sun Goddess (IRE) in the Moyglare Stud Stakes (Group 1) at Curragh (IRE) on 13 September 2026.
Who has been Aidan O'Brien's most successful horse in the last 12 months?: Aidan O'Brien's most successful horse in Britain and Ireland over the last 12 months is Sun Goddess (IRE), with 6 wins.
Where does Aidan O'Brien have the most winners?: Curragh (IRE) is Aidan O'Brien's most successful course on the Flat since the start of 2022, with 168 winners from 753 runners (22%).
Does Aidan O'Brien have any runners coming up?: Aidan O'Brien has 80 runners entered or declared in the next 7 days, starting with Captain James Cook in the 13:02 at Curragh on 15 October 2026.
When did Aidan O'Brien last have a winner?: Aidan O'Brien's most recent winner in Britain or Ireland was Bengal Tiger (IRE) at Naas (IRE) on 11 October 2026.

Updated 2026-10-10

Follow Aidan O'Brien in Tracker+

Keep this record close when the next race is declared.

Join RaceWatch

Updated 2026-10-10

Go deeper before the next race.

Open every racecard in full and get your research done before they go to post.

14racecard tabs per race
20+bookmaker prices side by side
Trackeralerts when your horses are declared

30-day free trial

£0today

Start my 30-day free trial

By continuing you agree to our Terms and Intellectual Property and Acceptable Use policy.

£0 today. Card on step 2. £24.99 from day 31.Cancel any time.