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Horse profile

Mirth (GB)

3yo filly (at last run, Jul 2013) · Last trainer Mark Johnston · Last owner Sheikh Hamdan Bin Mohammed Al Maktoum
by Teofilo (IRE) out of Birthstone (GB) (Machiavellian)
8 runs · 5 courses · from Feb 2013
As at 28 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 9 Jul 2013 — 4,858 days ago. Our archive can't say whether the horse is still in training.
Last run Jul 2013 · 6th of 11 Last raced off OR 58
KTB Profile

Mirth (GB) is yet to win from 8 starts, though has placed 3 times. Best effort: 2nd of 7 at Lingfield (AW) (Mar 2013).

Based on 8 archived runs · updated 28 Oct 2026
Official rating58↓ 2lb off peak
58 58–60

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 64A the best of the last 3 rated runs · Beverley, 12 Jun 2013 Official rating 58 at the last run, 9 Jul 2013

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 8 figures · best 68A · median 47.5
GoingRunsBestMedianSince 28 Oct 2025
Standard (AW)668A47.5—
Good to Firm1———
Good1———
DistanceRunsBestMedianSince 28 Oct 2025
1m2f – 1m4f768A45—
1m – 1m1f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 8 figures from 8 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 12.5% of 10,076 runs since Jan 2008 (907 horses).

Weakest over 2m1f – 2m4f (all codes): 7% from 625.

GoingRunsWinsSRvs sireThis horse
Firm4149.8%−2.7—
Good to Firm1,51021814.4%+1.90 from 1
Good2,62534213%+0.50 from 1
Good to Soft1,13013812.2%−0.3—
Soft1,62818611.4%−1.1—
Heavy5285510.4%−2.1—
Standard (AW)2,61131211.9%−0.60 from 6
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f40615%+2.5—
6f – 7f1,29515411.9%−0.6—
1m – 1m1f2,10626312.5%00 from 1
1m2f – 1m4f3,76151213.6%+1.10 from 7
1m5f – 2m1,97725713%+0.5—
2m1f – 2m4f625447%−5.5—
2m5f – 3m230187.8%−4.7—
Over 3m4237.1%−5.4—

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
Birthstone (GB) (Machiavellian)

7 siblings in the archive, 6 winners — best of them Star Of Valour (IRE) (4 wins).

The wins came over 6f–1m3½f; the highest grade won is Class 5 (Star Of Valour (IRE)).

ProduceRunsWinsWin tripsBest grade
Star Of Valour (IRE)4047f–1m½fClass 5
Gift List (GB)527fClass 5
Lovemenot (IRE)1021m1½f–1m3½f—
Classic Win (IRE)316fClass 5
Diamond Ali (GB)1211mClass 6
Charm Bracelet (GB)311m—
Jewel Box (IRE)30——

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 6 0 0% −6.00
Good to Firm 1 0 0% −1.00
Good 1 0 0% −1.00

ClassRunsWinsSR£1
Class 5 6 0 0% −6.00
Class 6 2 0 0% −2.00

CourseRunsWinsSR£1
Lingfield (AW) 3 0 0% −3.00
Beverley 2 0 0% −2.00
Wolverhampton (AW) 1 0 0% −1.00
Kempton (AW) 1 0 0% −1.00
Southwell (AW) 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 7 0 0% −7.00
1m – 1m1f 1 0 0% −1.00

JockeyRunsWinsSR£1
Joe Fanning 4 0 0% −4.00
Franny Norton 2 0 0% −2.00
Darren Egan 1 0 0% −1.00
Nicky Mackay 1 0 0% −1.00

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 ORKTB Jockey SP
2013 · 8 runs
09 Jul 13+19d Wolverhampton (AW) Neal Wood Fourth Anniversary Memorial Handicap Class 5 · 12f · Standard · 11 ran 6/11 3¼ 7-11 5854A Darren Egan 33/1
20 Jun 13+8d Lingfield (AW) Breathe Spa At Lingfield Marriott Handicap Class 5 · 12f · Standard · 9 ran 8/9 6 8-11 5845C Joe Fanning 16/1
12 Jun 13+14d Beverley Promote Your Horse Pre-Auction At racehorsetrader.com Handicap (Part Of The Beverley Middle Distance Series) Class 6 · 12f · Good To Firm · 11 ran 3/11 hd 9-5 5864A Franny Norton 14/1
29 May 13+42d Beverley Beverley Middle Distance Series Handicap Class 5 · 12f · Good · 6 ran 6/6 6 8-13 6042B Joe Fanning 5/1
17 Apr 13+33d Kempton (AW) Book For 06.05.13 On 0844 579 3008 Handicap Class 6 · 12f · Standard · 8 ran 4/8 1¼ 9-7 6068A Franny Norton 14/1
15 Mar 13+14d Lingfield (AW) Cheltenham Betting Offers With bookmakers.co.uk Maiden Stakes Class 5 · 12f · Standard · 7 ran 6/7 17 9-0 —35C Joe Fanning 10/1
01 Mar 13+23d Lingfield (AW) Lingfield Park Owners Group Maiden Stakes Class 5 · 12f · Standard · 7 ran 2/7 1¾ 8-0 —42A Nicky Mackay 3/1
06 Feb 13 Southwell (AW) Bookmaker Reviews At Bookmakers.co.uk Maiden Fillies' Stakes Class 5 · 8f · Standard To Slow · 6 ran 2/6 8 8-9 —50B Joe Fanning 9/4

Quick answers

How many races has Mirth won?
Mirth (GB) has yet to win, from 8 archived starts in 2013. Placed 3 times in total (37.5% of starts).
Who trained Mirth?
Mirth (GB) was trained by Mark Johnston on the most recent run on record, at Wolverhampton (AW) on 9 July 2013.
Who is Mirth's sire?
Mirth (GB) is by Teofilo (IRE) out of Birthstone (GB), whose sire is Machiavellian.
What is Mirth's official rating?
The most recent official rating on record is 58, from the run on 9 July 2013. The highest on record is 60.
What is Mirth's sire's record?
Teofilo (IRE)'s progeny in our archive have won 12.5% of 10,076 runs since Jan 2008 (907 horses), Flat and jumps together. Weakest over 2m1f – 2m4f (all codes): 7% from 625.
Who are Mirth's siblings?
Out of Birthstone (GB), Mirth (GB) has 7 other produce in our archive, 6 of them winners. Most wins: Star Of Valour (IRE) (4). Highest grade won: Class 5 (Star Of Valour (IRE)). The wins came over 6f–1m3½f. As at Oct 2026.

Record shown from February 2013. 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.