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Horse profile

Rationale (GB)

2yo filly (at last run, Oct 2024) · Last trainer Rae Guest · Last owner The Good Reason Partners
by Kameko (USA) out of Good Reason (GB) (Dark Angel)
4 runs · 4 courses · from Sep 2024
As at 22 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 8 Oct 2024 — 743 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2024 · 10th of 14 Last raced off OR 52
KTB Profile

Rationale (GB) is a filly by Kameko out of a Dark Angel mare who has failed to win or place in four starts. She raced over trips from under 6f to 7f on good to soft, good and standard surfaces, recording her highest official rating of 52. Her last run came at Brighton in Oct 2024 when she finished 10 of 14 in a Class 6 nursery off a mark of 52. She has raced once at Brighton, Chelmsford City, Wolverhampton and Bath.

Based on 4 archived runs · run-style from 3 commented runs since Sep 2024 · updated 22 Oct 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 69 the best of the last 2 graded (A or B) runs · Wolverhampton (AW), 21 Sep 2024

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 4 figures · best 69A · median 60
GoingRunsBestMedianSince 22 Oct 2025
Standard (AW)269A61—
Good to Soft1———
Good1———
DistanceRunsBestMedianSince 22 Oct 2025
6f – 7f369A53—
Under 6f1———

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 4 figures from 4 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 46A the best of the last 3 rated runs · Wolverhampton (AW), 21 Sep 2024 Official rating 52 at the last run, 8 Oct 2024

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 4 figures · best 46A · median 42
GoingRunsBestMedianSince 22 Oct 2025
Standard (AW)246A42—
Good to Soft1———
Good1———
DistanceRunsBestMedianSince 22 Oct 2025
6f – 7f346A38—
Under 6f1———

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 4 figures from 4 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 from 3 analysed runs since Sep 2024

  • Held up 1 (33%) · 0 wins
  • Prominent 1 (33%) · 0 wins
  • Mid-division 1 (33%) · 0 wins

Pedigree intelligence

Sire
Kameko (USA)

Progeny in our archive have won 9.8% of 981 runs since Jan 2008 (133 horses).

GoingRunsWinsSRvs sireThis horse
Firm7114.3%+4.5—
Good to Firm2252410.7%+0.9—
Good2392711.3%+1.50 from 1
Good to Soft9699.4%−0.40 from 1
Soft59711.9%+2.1—
Heavy18211.1%+1.3—
Standard (AW)337267.7%−2.10 from 2
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f751013.3%+3.50 from 1
6f – 7f385287.3%−2.50 from 3
1m – 1m1f2813111%+1.2—
1m2f – 1m4f1711911.1%+1.3—
1m5f – 2m55712.7%+2.9—
2m1f – 2m4f1417.1%−2.7—

Flat and jumps together (all codes) · since Jan 2008 · as at 22 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Good Reason (GB) (Dark Angel)

No other produce in our archive. It holds racing in Great Britain, Ireland and France from 2005, so siblings racing elsewhere won’t appear here.

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 2 0 0% −2.00
Good to Soft 1 0 0% −1.00
Good 1 0 0% −1.00

ClassRunsWinsSR£1
Class 5 3 0 0% −3.00
Class 6 1 0 0% −1.00

CourseRunsWinsSR£1
Brighton 1 0 0% −1.00
Chelmsford City (AW) 1 0 0% −1.00
Wolverhampton (AW) 1 0 0% −1.00
Bath 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 3 0 0% −3.00
Under 6f 1 0 0% −1.00

JockeyRunsWinsSR£1
Kieran O'Neill 2 0 0% −2.00
Darragh Keenan 1 0 0% −1.00
Christian Howarth 1 0 0% −1.00

HeadgearRunsWinsSR£1
Hood 3 0 0% −3.00
Blinkers 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 ORSpdKTB Jockey SP
08 Oct 24+10d Brighton Sky Sports Racing Sky 415 Nursery Class 6 · 7f · Good To Soft · 14 ran Fought for control early - disputed the front end until 3f out - knocked sideways and dropped back over 2f out - well held at the finish 10/14 4¾ 9-6 5229C32C Kieran O'Neill 50/1
28 Sep 24+7d Chelmsford City (AW) EBF Restricted Novice Stakes (GBB Race) (Div 1) Class 5 · 7f · Standard · 13 ran Settled towards the back early - failed to get involved and dropped away - finished last of the runners 13/13 2 8-11 —53C38C Darragh Keenan 250/1
21 Sep 24+17d Wolverhampton (AW) At The Races 1M Social Followers EBF Restricted Maiden Stakes (GBB Race) (Div 1) Class 5 · 7f · Standard · 10 ran Sat close to the front group early - pressed for advantage before the 2f marker - lost ground inside the final furlong - finished ninth 9/10 1 8-13 —69A46A Christian Howarth 125/1
04 Sep 24 Bath Bet 20 Get 20 With DragonBet EBF Restricted Maiden Stakes (GBB Race) Class 5 · 5.5f · Good · 9 ran Held up early - stayed off the pace as leaders went clear - no impression made and beaten a long way home 8/9 1¾ 9-2 —67A46A Kieran O'Neill 33/1

Quick answers

How many races has Rationale (GB) won?
Rationale (GB) has yet to win, from 4 archived starts in 2024.
Who trained Rationale (GB)?
Rationale (GB) was trained by Rae Guest on the most recent run on record, at Brighton on 8 October 2024.
Who is Rationale (GB)'s sire?
Rationale (GB) is by Kameko (USA) out of Good Reason (GB), whose sire is Dark Angel.
What is Rationale (GB)'s official rating?
The most recent official rating on record is 52, from the run on 8 October 2024. That is also the highest on record.
What is Rationale (GB)'s sire's record?
Kameko (USA)'s progeny in our archive have won 9.8% of 981 runs since Jan 2008 (133 horses), Flat and jumps together.

Record shown from September 2024. 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.