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Horse profile

Curlew River (GB)

3yo filly (at last run, Oct 2017) · Last trainer Mark Johnston · Last owner Sheikh Hamdan Bin Mohammed Al Maktoum
by Casamento (IRE) out of Dubai Opera (USA) (Dubai Millennium)
11 runs · 8 courses · from Oct 2016
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 7 Oct 2017 — 3,307 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2017 · 5th of 10 3 wins · Brighton, Leicester & Chelmsford City (AW) Last raced off OR 92
KTB Profile

Curlew River (GB) is 3 from 11, all wins coming at Class 4 level. Hasn't won since Aug 2017. All 3 wins have come over 1m2f – 1m4f.

Based on 11 archived runs · updated 27 Oct 2026
KTB at a glance All wins at Class 4

Progeny in our archive

Produce record

As a dam, Curlew River (GB) has 1 produce in the archive, 0 winners.

ProduceRunsWinsWin tripsBest grade
Lark (FR)20——
Official rating92↓ 3lb off peak
92 80–95

KTB Speed and Rating

KTB Speed

Best recent Speed 93 the best of the last 3 graded (A or B) runs · Chester, 2 Sep 2017

How fast the horse ran, as points against the day-corrected standard time for its course and distance: 100 is the median GB Class 4 handicap winner on that code; one point is 0.1% of the standard time. A, B or C is how much the day's card could tell us, not how good the run was. What this means →

Flat 11 figures · best 93A · median 81
GoingRunsBestMedianSince 27 Oct 2025
Good493A78.5—
Good to Soft289A79.5—
Good to Firm285A83—
Standard (AW)286A77—
Heavy1———
DistanceRunsBestMedianSince 27 Oct 2025
1m2f – 1m4f886A76—
6f – 7f289A85—
1m5f – 2m1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 11 figures from 11 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 83A the best of the last 3 rated runs · Newmarket, 7 Oct 2017 Official rating 92 at the last run, 7 Oct 2017

What the horse achieved in each race, in pounds on the official-rating scale, from the weight carried, the lengths beaten and the race's own level solved across the archive — never the market, never the official rating as a starting point. The headline is the best of the horse's last three rated runs on that code. A, B or C on a run is how much known form was in that race. What this means →

Flat 11 figures · best 97A · median 75
GoingRunsBestMedianSince 27 Oct 2025
Good487A79—
Good to Soft284A78—
Good to Firm297A84—
Standard (AW)282B73.5—
Heavy1———
DistanceRunsBestMedianSince 27 Oct 2025
1m2f – 1m4f897A78.5—
6f – 7f284A77.5—
1m5f – 2m1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 11 figures from 11 runs · as at 4 Oct 2026 · a record, not a forecast

Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.

Run style is derived from in-running commentary, which our data provider does not supply for this horse's races.

Pedigree intelligence

Sire

Progeny in our archive have won 8.6% of 3,623 runs since Jan 2008 (299 horses).

Weakest at trips under 6f (all codes): 4.9% from 287.

GoingRunsWinsSRvs sireThis horse
Firm20210%+1.4—
Good to Firm450449.8%+1.21 from 2
Good8088810.9%+2.31 from 4
Good to Soft413338%−0.60 from 2
Soft499295.8%−2.8—
Heavy170127.1%−1.50 from 1
Standard (AW)1,2631058.3%−0.31 from 2
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f287144.9%−3.7—
6f – 7f755668.7%+0.10 from 2
1m – 1m1f680436.3%−2.3—
1m2f – 1m4f8108510.5%+1.93 from 8
1m5f – 2m695639.1%+0.50 from 1
2m1f – 2m4f273269.5%+0.9—
2m5f – 3m971212.4%+3.8—
Over 3m26415.4%+6.8—

Flat and jumps together (all codes) · since Jan 2008 · as at 27 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Dubai Opera (USA) (Dubai Millennium)

4 siblings in the archive, 2 winners — best of them Grigolo (GB) (2 wins).

The wins came over 7f–1m1½f; the highest grade won is Class 2 (Grigolo (GB)).

ProduceRunsWinsWin tripsBest grade
Grigolo (GB)727f–1mClass 2
Rebel Song (IRE)411m1½fClass 5
Opera Buffa (IRE)330——
Minaret (IRE)10——

Record by conditions

GoingRunsWinsSR£1
Good 4 1 25% +2.00
Good to Soft 2 0 0% −2.00
Good to Firm 2 1 50% +3.00
Standard (AW) 2 1 50% +2.00
Heavy 1 0 0% −1.00

ClassRunsWinsSR£1
Class 2 4 0 0% −4.00
Class 4 4 3 75% +11.00
Class 1 2 0 0% −2.00
Class 5 1 0 0% −1.00

CourseRunsWinsSR£1
Newmarket 3 0 0% −3.00
Chelmsford City (AW) 2 1 50% +2.00
Newbury 1 0 0% −1.00
Haydock 1 0 0% −1.00
Chester 1 0 0% −1.00
York 1 0 0% −1.00
Brighton 1 1 100% +4.00
Leicester 1 1 100% +5.00

DistanceRunsWinsSR£1
1m2f – 1m4f 8 3 38% +7.00
6f – 7f 2 0 0% −2.00
1m5f – 2m 1 0 0% −1.00

JockeyRunsWinsSR£1
Joe Fanning 3 1 33% +2.00
Richard Kingscote 2 0 0% −2.00
William Buick 2 0 0% −2.00
Harry Bentley 1 0 0% −1.00
James Doyle 1 0 0% −1.00
Franny Norton 1 1 100% +5.00
Silvestre De Sousa 1 1 100% +3.00

SeasonRunsWinsSR£1
2017 9 3 33% +6.00
2016 2 0 0% −2.00

Splits include every sample, however small — muted rows are under 3 runs. A one-from-one record is a fact, not a trend: read the Runs column before the strike rate.

Form

DateCourseRace PosBtn Wgt ORSpdKTB Jockey SP
2017 · 9 runs
07 Oct 17+14d Newmarket EBF Breeders' Fillies' Series thisfillycan Handicap Class 2 · 12f · Good · 10 ran 5/10 1¾ 9-2 9267A83A Joe Fanning 13/2
23 Sep 17+14d Newbury Dubai Duty Free Handicap Class 2 · 10f · Good · 19 ran 13/19 ½ 8-10 9582C75A Harry Bentley 40/1
09 Sep 17+7d Haydock EBF Breeders' Series 32Red Fillies' Handicap Class 2 · 10.5f · Heavy · 7 ran 5/7 4 9-4 9477A69A Richard Kingscote 17/2
02 Sep 17+9d Chester corbettsports.com Chester Stakes (Listed Handicap) Class 1 · 13.5f · Good · 11 ran 5/11 ¾ 8-10 9593A75A Richard Kingscote 8/1
24 Aug 17+14d York British EBF & Sir Henry Cecil Galtres Stakes (Fillies Listed) Class 1 · 12f · Good To Soft · 10 ran 8/10 ¾ 8-12 9570B72A James Doyle 7/1
10 Aug 17+8d Brighton Marathonbet Sportsbook Brighton Challenge Cup Handicap Class 4 · 12f · Good To Firm · 9 ran 1/9 9-10 8085A97A Joe Fanning 4/1
02 Aug 17+84d Leicester Joules Celebration Fillies' Handicap Class 4 · 10f · Good · 7 ran 1/7 9-6 8075B87A Franny Norton 5/1
10 May 17+27d Chelmsford City (AW) totepool Betting On All UK Racing Handicap Class 2 · 10f · Standard · 9 ran 7/9 2½ 8-7 8186A65A Joe Fanning 14/1
13 Apr 17+166d Chelmsford City (AW) Bet totequadpot At totesport.com Maiden Fillies' Stakes (Plus 10) Class 4 · 10f · Standard · 5 ran 1/5 9-0 —68C82B Silvestre De Sousa 3/1
2016 · 2 runs
29 Oct 16+10d Newmarket EBF Stallions Prestige Vehicles Maiden Fillies' Stakes (Plus 10) (Div 2) Class 4 · 7f · Good To Firm · 13 ran 7/13 ½ 9-0 —81C71A William Buick 2/1F
19 Oct 16 Newmarket discovernewmarket.co.uk Median Auction Maiden Fillies' Stakes (Plus 10) (Div 1) Class 5 · 7f · Good To Soft · 10 ran 2/10 hd 9-0 —89A84A William Buick 7/1

Quick answers

How many races has Curlew River won?
Curlew River (GB) won 3 of 11 archived starts between 2016 and 2017, a strike rate of 27.3%. Placed 4 times in total (36.4% of starts).
Who trained Curlew River?
Curlew River (GB) was trained by Mark Johnston on the most recent run on record, at Newmarket on 7 October 2017.
Who is Curlew River's sire?
Curlew River (GB) is by Casamento (IRE) out of Dubai Opera (USA), whose sire is Dubai Millennium.
What going does Curlew River prefer?
Curlew River (GB) has the best record on good going: 1 win from 4 starts (25%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Curlew River's official rating?
The most recent official rating on record is 92, from the run on 7 October 2017. The highest on record is 95.
What is Curlew River's sire's record?
Casamento (IRE)'s progeny in our archive have won 8.6% of 3,623 runs since Jan 2008 (299 horses), Flat and jumps together. Weakest at trips under 6f (all codes): 4.9% from 287.
Who are Curlew River's siblings?
Out of Dubai Opera (USA), Curlew River (GB) has 4 other produce in our archive, 2 of them winners. Most wins: Grigolo (GB) (2). Highest grade won: Class 2 (Grigolo (GB)). The wins came over 7f–1m1½f. As at Oct 2026.
Has Curlew River produced winners?
As a dam, Curlew River (GB) has 1 produce in our archive, 0 of them winners. As at Oct 2026.

Record shown from October 2016. Our archive holds racing in Great Britain, Ireland and France from January 2005. Runs in other countries are not in it, and earlier runs are not available from our data provider. In-running comments are available from 2024 onward.