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Horse profile

Miss Clairton (GB)

2yo filly (at last run, Aug 2010) · Last trainer Sir Mark Prescott Bt · Last owner Mrs June Rooney
by Marju (IRE) out of Spirito Libro (USA) (Lear Fan)
6 runs · 4 courses · from May 2010
As at 21 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 17 Aug 2010 — 5,909 days ago. Our archive can't say whether the horse is still in training.
Last run Aug 2010 · 2nd of 4 2 wins · Wolverhampton (AW) & Lingfield (AW) Beaten favourite LTO Last raced off OR 77
KTB Profile

Miss Clairton (GB) is 2 from 6. Hasn't won since Aug 2010. Each win came on a first visit to the course.

Based on 6 archived runs · updated 21 Oct 2026

KTB Speed and Rating

KTB Speed

No KTB Speed figures for this horse. The engine scores GB and Irish racing from Oct 2016; runs elsewhere, or earlier, have no figure.

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 0 figures from 0 runs · a record, not a forecast

KTB Rating

Best recent KTB Rating 101A the best of the last 3 rated runs · Wolverhampton (AW), 9 Aug 2010 Official rating 77 at the last run, 17 Aug 2010

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 6 figures · best 101A · median 75
GoingRunsBestMedianSince 21 Oct 2025
Standard (AW)4101A84.5—
Good to Firm267A64—
DistanceRunsBestMedianSince 21 Oct 2025
6f – 7f3101A89—
Under 6f380A67—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 6 figures from 6 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
Marju (IRE)

Progeny in our archive have won 10.2% of 3,553 runs since Jan 2008 (286 horses).

GoingRunsWinsSRvs sireThis horse
Firm51917.6%+7.4—
Good to Firm6236510.4%+0.20 from 2
Good861809.3%−0.9—
Good to Soft383369.4%−0.8—
Soft4895310.8%+0.6—
Heavy176148%−2.2—
Standard (AW)97010510.8%+0.62 from 4
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f1461711.6%+1.41 from 3
6f – 7f858657.6%−2.61 from 3
1m – 1m1f7017510.7%+0.5—
1m2f – 1m4f78710213%+2.8—
1m5f – 2m651649.8%−0.4—
2m1f – 2m4f335329.6%−0.6—
2m5f – 3m6469.4%−0.8—
Over 3m1119.1%−1.1—

Flat and jumps together (all codes) · since Jan 2008 · as at 21 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Spirito Libro (USA) (Lear Fan)

7 siblings in the archive, 1 winner — best of them Memphis Marie (GB) (1 win).

The wins came over 7f; the highest grade won is Class 5 (Memphis Marie (GB)).

ProduceRunsWinsWin tripsBest grade
Memphis Marie (GB)1117fClass 5
Prince Aaron (IRE)40——
Essanar (GB)100——
Jayarbee (IRE)50——
Tennessee Belle (IRE)150——
Littlemisspositive (GB)40——
Lord Wishingwell (IRE)40——

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 4 2 50% +5.88
Good to Firm 2 0 0% −2.00

ClassRunsWinsSR£1
Class 4 3 1 33% +4.00
Class 5 3 1 33% −0.12

CourseRunsWinsSR£1
Kempton (AW) 2 0 0% −2.00
Catterick 2 0 0% −2.00
Wolverhampton (AW) 1 1 100% +6.00
Lingfield (AW) 1 1 100% +1.88

DistanceRunsWinsSR£1
6f – 7f 3 1 33% +4.00
Under 6f 3 1 33% −0.12

JockeyRunsWinsSR£1
Seb Sanders 4 0 0% −4.00
Stevie Donohoe 2 2 100% +7.88

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 ORKTB Jockey SP
17 Aug 10+8d Kempton (AW) digibet.com Nursery Class 4 · 7f · Standard · 4 ran 2/4 2¼ 9-8 7789B Seb Sanders 8/13F
09 Aug 10+5d Wolverhampton (AW) Bet In-play At Ladbrokes.com Nursery Handicap Class 4 · 7f · Standard · 7 ran 1/7 9-5 79101A Stevie Donohoe 6/1
04 Aug 10+44d Kempton (AW) digibet Nursery Class 4 · 6f · Standard · 7 ran 5/7 2 9-3 7970A Seb Sanders 11/4F
21 Jun 10+17d Lingfield (AW) European Breeders' Fund Maiden Fillies' Stakes (AWT) Class 5 · 5f · Standard · 8 ran 1/8 9-0 7980A Stevie Donohoe 15/8
04 Jun 10+14d Catterick European Breeders' Fund Maiden Stakes Class 5 · 5f · Good To Firm · 12 ran 4/12 1½ 8-12 —67A Seb Sanders 11/4
21 May 10 Catterick E.B.F. Maiden Stakes Class 5 · 5f · Good To Firm · 9 ran 4/9 1½ 8-12 —61A Seb Sanders 13/2

Quick answers

How many races has Miss Clairton (GB) won?
Miss Clairton (GB) won 2 of 6 archived starts in 2010, a strike rate of 33.3%. Placed 2 times in total (33.3% of starts).
Who trained Miss Clairton (GB)?
Miss Clairton (GB) was trained by Sir Mark Prescott Bt on the most recent run on record, at Kempton (AW) on 17 August 2010.
Who is Miss Clairton (GB)'s sire?
Miss Clairton (GB) is by Marju (IRE) out of Spirito Libro (USA), whose sire is Lear Fan.
What going does Miss Clairton (GB) prefer?
Miss Clairton (GB) has the best record on standard (aw) going: 2 wins from 4 starts (50%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Miss Clairton (GB)'s official rating?
The most recent official rating on record is 77, from the run on 17 August 2010. The highest on record is 79.
What is Miss Clairton (GB)'s sire's record?
Marju (IRE)'s progeny in our archive have won 10.2% of 3,553 runs since Jan 2008 (286 horses), Flat and jumps together.
Who are Miss Clairton (GB)'s siblings?
Out of Spirito Libro (USA), Miss Clairton (GB) has 7 other produce in our archive, 1 of them a winner. Most wins: Memphis Marie (GB) (1). Highest grade won: Class 5 (Memphis Marie (GB)). The wins came over 7f. As at Oct 2026.

Record shown from May 2010. 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.