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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

Form

Flat 2026 season


Flat Turf	537	99	18.4%	146	£8,658,659	€5,463,978	64/168	Sun Goddess (IRE)
Flat AW	14	5	35.7%	2	£0	€70,943	5/14	New Yorker (USA)
All races	551	104	18.9%	148	£8,658,659	€5,534,921	69/171	Sun Goddess (IRE)

GB and IRE. Placed = 2nd or 3rd.

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Flat last 5 seasons (2022 to date)


Flat Turf	2,789	618	22.2%	767	£34,367,523	€28,930,933	346/553	Kyprios (IRE)
Flat AW	161	39	24.2%	52	£24,209	€599,883	39/113	Romantic Thor (USA)
All races	2,950	657	22.3%	819	£34,391,732	€29,530,816	364/557	Kyprios (IRE)

GB and IRE. Placed = 2nd or 3rd.

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Career (GB and IRE, records from 1990)


Hurdle	2,351	404	17.2%	533	£990,509	€681,639	178/423	Istabraq (IRE)
Chase	682	90	13.2%	189	£64,391	€82,234	49/115	Life Of A Lord (GB)
NH Flat	1,064	198	18.6%	275	£0	€259,347	149/392	Tesseract (IRE)
Flat Turf	17,050	3,395	19.9%	4,616	£115,326,612	€120,768,236	1872/2863	Kyprios (IRE)
Flat AW	966	218	22.6%	260	£205,964	€3,186,465	192/551	Clear Skies (GB)
All races	22,113	4,305	19.5%	5,873	£116,587,476	€124,977,920	2189/3336	Istabraq (IRE)

Best horse = most wins in the category.

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Last 14 days runners


11 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Bluebell Stakes	Flat Turf	Listed	1m4f	Soft	Moments Of Joy (USA)	Ryan Moore	6/14	28/1	98	€999
11 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Garnet Stakes	Flat Turf	Listed	1m	Soft	Drop Dead Gorgeous (IRE)	Ryan Moore	8/16	9/1	91	€0
11 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Garnet Stakes	Flat Turf	Listed	1m	Soft	Classiest (IRE)	Wayne Lordan	12/16	25/1	90	€0
11 Oct 26	Naas (IRE)	Tifrums Irish EBF (C & G) Maiden	Flat Turf	-	6f	Soft	Major Triumph (IRE)	Wayne Lordan	3/7	6/1	-	€2,200
11 Oct 26	Naas (IRE)	Tifrums Irish EBF (C & G) Maiden	Flat Turf	-	6f	Soft	Bengal Tiger (IRE)	Ryan Moore	1/7	2/9F	-	€13,200
11 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Fillies Maiden	Flat Turf	-	6f	Soft	Film Set (USA)	Ryan Moore	3/13	3/1J	77	€2,200
11 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Fillies Maiden	Flat Turf	-	6f	Soft	Be In Love (IRE)	Wayne Lordan	6/13	7/1	-	€440
10 Oct 26	Newmarket	Darley Dewhurst Stakes	Flat Turf	Group 3	7f	Good	Great Barrier Reef (IRE)	Wayne Lordan	3/5	15/2	-	£53,800
10 Oct 26	Newmarket	Darley Dewhurst Stakes	Flat Turf	Group 3	7f	Good	Darkness Falls (IRE)	Ryan Moore	1/5	6/4	-	£283,550
10 Oct 26	Naas (IRE)	Irish Stallion Farms EBF Birdcatcher Premier Nursery Handicap	Flat Turf	-	6f	Soft	New Yorker (USA)	Jack Cleary	7/7	14/1	84	€0
10 Oct 26	Newmarket	Emirates Autumn Stakes	Flat Turf	Group 3	1m	Good	Sergei Diaghilev (IRE)	Ryan Moore	2/7	15/8	-	£16,125
10 Oct 26	Newmarket	Native Trail Zetland Stakes	Flat Turf	Group 3	1m2f	Good	Drumbeat (IRE)	Ryan Moore	1/6	10/11F	-	£42,532
10 Oct 26	Naas (IRE)	Irish EBF Maiden	Flat Turf	-	1m	Soft	True Sovereign (USA)	Shane B Kelly	14/18	20/1	-	€0
10 Oct 26	Naas (IRE)	Irish EBF Maiden	Flat Turf	-	1m	Soft	Knight's Honour (IRE)	Liam Keniry	12/18	16/1	-	€0
10 Oct 26	Naas (IRE)	Irish EBF Maiden	Flat Turf	-	1m	Soft	Iveagh House (IRE)	Jack Cleary	4/18	5/6F	-	€1,250
9 Oct 26	Newmarket	Bet365 Fillies' Mile	Flat Turf	Group 2	1m	Good	Exceptionally (USA)	Colin Keane	8/8	50/1	-	£0
9 Oct 26	Newmarket	Bet365 Fillies' Mile	Flat Turf	Group 2	1m	Good	Haven (IRE)	Ryan Moore	2/8	28/1	-	£107,500
9 Oct 26	Newmarket	Godolphin Lifetime Care Oh So Sharp Stakes	Flat Turf	Group 3	7f	Good	Golden Ring (IRE)	Ryan Moore	7/14	9/1	-	£0
9 Oct 26	Newmarket	Newmarket Academy Godolphin Beacon Project Cornwallis Stakes	Flat Turf	Group 3	5f	Good	Marco Polo (IRE)	Ryan Moore	8/13	17/2	-	£0
9 Oct 26	Newmarket	Newmarket Academy Godolphin Beacon Project Cornwallis Stakes	Flat Turf	Group 3	5f	Good	Carry The Flag (IRE)	Declan McDonogh	4/13	20/1	-	£4,020
8 Oct 26	Thurles (IRE)	Irish Stallion Farms EBF Fillies Maiden	Flat Turf	-	1m½f	Good To Yielding	Beach (IRE)	Jack Cleary	6/10	28/1	-	€440
8 Oct 26	Thurles (IRE)	Irish Stallion Farms EBF Fillies Maiden	Flat Turf	-	1m½f	Good To Yielding	Ophelia (IRE)	Ben Coen	4/10	25/1	-	€1,100
7 Oct 26	Navan (IRE)	Navan Racecourse Welcomes Our Local Community Maiden	Flat Turf	-	1m	Yielding	Aachen (USA)	Jack Cleary	4/9	6/1	-	€900
7 Oct 26	Navan (IRE)	Navan Racecourse Welcomes Our Local Community Maiden	Flat Turf	-	1m	Yielding	Choctaw Nation (IRE)	Wayne Lordan	2/9	3/1	-	€3,600
7 Oct 26	Navan (IRE)	Navan Racecourse Welcomes Our Local Community Maiden	Flat Turf	-	1m	Yielding	Magna Cum Laude (USA)	Declan McDonogh	5/9	40/1	-	€540
5 Oct 26	Killarney (IRE)	Irish Stallion Farms EBF Fillies Maiden	Flat Turf	-	1m3f	Soft	Together Now (USA)	Wayne Lordan	2/7	2/7F	-	€3,000
5 Oct 26	Killarney (IRE)	Irish Stallion Farms EBF Navigation Stakes	Flat Turf	Listed	1m3f	Soft	Garden Party (IRE)	Gavin Ryan	8/8	40/1	85	€0
5 Oct 26	Killarney (IRE)	Irish Stallion Farms EBF Navigation Stakes	Flat Turf	Listed	1m3f	Soft	Action (IRE)	Wayne Lordan	6/8	7/2	109	€999
5 Oct 26	Killarney (IRE)	Carry Out Off-Licence Handicap	Flat Turf	-	1m	Soft	Closely (IRE)	Wayne Lordan	5/10	25/1	68	€361
5 Oct 26	Killarney (IRE)	Irish Stallion Farms EBF Maiden	Flat Turf	-	1m	Yielding To Soft	Lake Lugano (IRE)	Wayne Lordan	3/12	15/2	-	€1,800
4 Oct 26	Curragh (IRE)	Hailey Equine Irish EBF Brigid's Pastures Stakes	Flat Turf	Listed	6f	Soft	Institute (IRE)	Wayne Lordan	15/16	40/1	77	€0
4 Oct 26	Curragh (IRE)	Coolmore Sioux Nation Concorde Stakes	Flat Turf	Listed	7f	Soft	Lewis Carroll (IRE)	Wayne Lordan	4/10	40/1	85	€2,500
4 Oct 26	Curragh (IRE)	Bermingham Cameras Irish EBF (C & G) Maiden	Flat Turf	-	7f	Soft	Paraguay (USA)	Jack Cleary	6/12	16/1	-	€440
4 Oct 26	Curragh (IRE)	Bermingham Cameras Irish EBF (C & G) Maiden	Flat Turf	-	7f	Soft	Hmas Perth (USA)	Wayne Lordan	1/12	30/100F	-	€13,200
4 Oct 26	Curragh (IRE)	Final Furlong Podcast With 1xBet.ie Irish EBF Fillies Maiden	Flat Turf	-	7f	Soft	Petticoat Bay (USA)	Jack Cleary	3/7	11/1	-	€2,200
2 Oct 26	Dundalk (AW) (IRE)	BAR 1 Betting 'Best Odds Guaranteed Overnight' Maiden	Flat AW	-	7f	Standard	Purely (IRE)	Wayne Lordan	2/13	8/1	63	€2,399
2 Oct 26	Dundalk (AW) (IRE)	Irish Stallion Farms EBF Star Appeal Stakes	Flat AW	Listed	7f	Standard	South Dakota (IRE)	Wayne Lordan	7/10	7/2	98	€0
2 Oct 26	Dundalk (AW) (IRE)	Irish EBF Fillies Maiden	Flat AW	-	1m	Standard	Golden Ring (IRE)	Wayne Lordan	1/7	2/5F	-	€15,000
2 Oct 26	Dundalk (AW) (IRE)	Irish EBF Fillies Maiden	Flat AW	-	1m	Standard	Somebody Loves Me (GB)	Jack Cleary	6/7	13/2	-	€500
1 Oct 26	Bellewstown (IRE)	Bellewstown Inn Fillies Maiden	Flat Turf	-	1m	Soft To Heavy	White Sand Beach (USA)	Jack Cleary	1/5	5/6F	79	€7,200

GB and IRE results, most recent first.

Great Britain only


Flat 2026 season	Flat Turf	134	26	19.4%	38	21/66	£8,658,659
Flat 2026 season	All races	134	26	19.4%	38	21/66	£8,658,659
Flat last 5 seasons (2022 to date)	Flat Turf	628	124	19.7%	163	80/250	£34,367,523
Flat last 5 seasons (2022 to date)	Flat AW	3	0	0.0%	2	0/3	£24,209
Flat last 5 seasons (2022 to date)	All races	631	124	19.7%	165	80/251	£34,391,732

GB races only, current and last 5 seasons per code. Placed = 2nd or 3rd.

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

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Ireland only


Flat 2026 season	Flat Turf	403	73	18.1%	108	55/165	€5,463,978
Flat 2026 season	Flat AW	14	5	35.7%	2	5/14	€70,943
Flat 2026 season	All races	417	78	18.7%	110	60/168	€5,534,921
Flat last 5 seasons (2022 to date)	Flat Turf	2,161	494	22.9%	604	325/547	€28,930,933
Flat last 5 seasons (2022 to date)	Flat AW	158	39	24.7%	50	39/111	€599,883
Flat last 5 seasons (2022 to date)	All races	2,319	533	23.0%	654	350/553	€29,530,816

Irish races only, current and last 5 seasons per code. Prize money in euro, never added to GB £.

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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.