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Horse profile

Serotonin (GB)

5yo gelding (at last run, Oct 2025) · Trainer Paul W Flynn · Owner Staysallday Syndicate
by Fast Company (IRE) out of Victorian Beauty (USA) (Rahy)
18 runs · 14 courses · from Oct 2022
As at 18 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Off 355 days · 12th of 18 Last raced off OR 53
KTB Profile

Serotonin is a maiden who has shown little for his 18 starts on the Flat, recording two places from 18 runs. His best effort came when second of seven at Tramore in Jul 2025. Typically held up, he finished 12 of 18 in the Galway Races Handicap at Galway in Oct 2025 when last raced off 53, 14lb below his highest ever mark of 67. He has raced on turf in 17 of those starts.

Based on 18 archived runs · run-style from 5 commented runs · updated 18 Oct 2026
KTB at a glance Typically held up OR ↓ 14lb off peak
Official rating53↓ 14lb off peak
53 53–67

KTB Speed and Rating

KTB Speed

Best recent Speed 110 the best of the last 3 graded (A or B) runs · Ffos Las, 30 Jun 2025

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 15 figures · best 110B · median 73
GoingRunsBestMedianSince 18 Oct 2025
Good to Soft4110B88—
Good496A85—
Heavy370C641 · —
Soft376C691 · —
Standard (AW)1———
DistanceRunsBestMedianSince 18 Oct 2025
1m2f – 1m4f996A731 · —
1m5f – 2m4110B791 · —
6f – 7f1———
1m – 1m1f1———
Jumps 3 figures · best 90C · median 73
GoingRunsBestMedianSince 18 Oct 2025
Good273C69—
Good to Soft1———
DistanceRunsBestMedianSince 18 Oct 2025
2m1f – 2m4f390C73—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 18 figures from 18 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating (flat) 78A the best of the last 3 rated runs · Sligo, 6 Aug 2025 Official rating 53 at the last flat run, 27 Oct 2025

Best recent KTB Rating (jumps) 103A the best of the last 3 rated runs · Galway, 2 Aug 2025

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 15 figures · best 78A · median 61
GoingRunsBestMedianSince 18 Oct 2025
Good to Soft478A67—
Good472A50.5—
Heavy363C621 · —
Soft361C571 · —
Standard (AW)1———
DistanceRunsBestMedianSince 18 Oct 2025
1m2f – 1m4f972A611 · —
1m5f – 2m478A631 · —
6f – 7f1———
1m – 1m1f1———
Jumps 3 figures · best 103A · median 91
GoingRunsBestMedianSince 18 Oct 2025
Good2103A96.5—
Good to Soft1———
DistanceRunsBestMedianSince 18 Oct 2025
2m1f – 2m4f3103A91—

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 18 figures from 18 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 5 analysed runs

  • Held up 5 (100%) · 0 wins

Pedigree intelligence

Sire
Fast Company (IRE)

Progeny in our archive have won 9.4% of 7,589 runs since Jan 2008 (492 horses).

Strongest on heavy going: 12.7% from 557. Strongest over 2m5f – 3m (all codes): 12.8% from 109.

GoingRunsWinsSRvs sireThis horse
Firm24312.5%+3.1—
Good to Firm944737.7%−1.7—
Good1,6561549.3%−0.10 from 6
Good to Soft936909.6%+0.20 from 5
Soft1,38816511.9%+2.50 from 3
Heavy5577112.7%+3.30 from 3
Standard (AW)2,0831557.4%−20 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f684679.8%+0.4—
6f – 7f2,7732328.4%−10 from 1
1m – 1m1f1,6911539%−0.40 from 1
1m2f – 1m4f1,21613711.3%+1.90 from 9
1m5f – 2m776759.7%+0.30 from 4
2m1f – 2m4f327329.8%+0.40 from 3
2m5f – 3m1091412.8%+3.4—
Over 3m1317.7%−1.7—

Flat and jumps together (all codes) · since Jan 2008 · as at 18 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Victorian Beauty (USA) (Rahy)

3 siblings in the archive, 2 winners — best of them Victoriano (IRE) (7 wins).

The wins came over 1m1½f–2m½f; the highest grade won is Class 4 (Victoriano (IRE)).

ProduceRunsWinsWin tripsBest grade
Victoriano (IRE)3871m6f–2m½fClass 4
Wilkie (GB)2211m1½f—
Riccoboni (GB)10——

Record by conditions

GoingRunsWinsSR£1
Good 6 0 0% −6.00
Good to Soft 5 0 0% −5.00
Heavy 3 0 0% −3.00
Soft 3 0 0% −3.00
Standard (AW) 1 0 0% −1.00

ClassRunsWinsSR£1
Class 6 1 0 0% −1.00

CourseRunsWinsSR£1
Sligo 3 0 0% −3.00
Galway 2 0 0% −2.00
Curragh 2 0 0% −2.00
Navan 1 0 0% −1.00
Downpatrick 1 0 0% −1.00
Ballinrobe 1 0 0% −1.00
Tramore 1 0 0% −1.00
Ffos Las 1 0 0% −1.00
Tipperary 1 0 0% −1.00
Gowran Park 1 0 0% −1.00
Fairyhouse 1 0 0% −1.00
Down Royal 1 0 0% −1.00
Leopardstown 1 0 0% −1.00
Dundalk (AW) 1 0 0% −1.00

DistanceRunsWinsSR£1
1m2f – 1m4f 9 0 0% −9.00
1m5f – 2m 4 0 0% −4.00
2m1f – 2m4f 3 0 0% −3.00
6f – 7f 1 0 0% −1.00
1m – 1m1f 1 0 0% −1.00

JockeyRunsWinsSR£1
Robert Whearty 3 0 0% −3.00
Dylan Browne McMonagle 3 0 0% −3.00
Kevin Sexton 2 0 0% −2.00
Oisin McSweeney 2 0 0% −2.00
Rory Cleary 2 0 0% −2.00
Benjamin P Kennedy 1 0 0% −1.00
Leigh Roche 1 0 0% −1.00
Richard Kingscote 1 0 0% −1.00
Conor Maxwell 1 0 0% −1.00
Luke McAteer 1 0 0% −1.00
Mark Enright 1 0 0% −1.00

HeadgearRunsWinsSR£1
Blinkers 11 0 0% −11.00
None 4 0 0% −4.00
Cheekpieces 2 0 0% −2.00
Visor 1 0 0% −1.00

SeasonRunsWinsSR£1
2025 9 0 0% −9.00
2024 2 0 0% −2.00
2023 6 0 0% −6.00
2022 1 0 0% −1.00

TypeRunsWinsSR£1
Flat 15 0 0% −15.00
Hurdle 3 0 0% −3.00

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
27 Oct 25+5d Galway Galway Races Handicap (0-60) 12f · Heavy · 18 ran Shared the pace early - settled just behind the front group then 4th halfway - pushed along into 6th 3f out - no response from there and well held at the line 12/18 2½ 9-9 5357C61C Robert Whearty 25/1
22 Oct 25+58d Navan Sign Up To GavinLynchRacing.com Handicap (0-60) 14f · Soft · 23 ran Sat close to the pace early - 6th at halfway then 5th and pushed along 2f out - unable to go with them and held to the line 16/23 1½ 9-9 5376C61C Dylan Browne McMonagle 10/1
25 Aug 25+19d Downpatrick A J C Group Maiden Hurdle 18f · Good · 9 ran Held up at the back of the field - no impact on proceedings - driven to keep going but found nothing more after the second-last - well held at the finish 8/9 9½ 11-12 —65C90C Kevin Sexton 5/1
06 Aug 25+4d Sligo Rockshore Cider Handicap (0-60) 13.5f · Good To Yielding · 13 ran Sat just behind the front group - 4th at halfway - asked for effort over 2f out - up to 3rd early in straight - stayed on same rate finishing third 3/13 1¼ 9-11 5466C78A Dylan Browne McMonagle 7/1
02 Aug 25+12d Galway BoyleSports Best Odds Guaranteed Maiden Hurdle 17f · Good · 19 ran Held up towards the back - pushed along in 12th approaching 2 out - unable to close - beaten a long way at the finish 8/19 2¾ 11-5 —73C103A Benjamin P Kennedy 100/1
21 Jul 25+13d Ballinrobe Tote Multiples Available On Tote.ie Apprentice Handicap (0-60) 13f · Good To Yielding · 14 ran Held up handy early - clipped by rival after a furlong and a half - made ground to hit front with 5f left - stayed there until overtaken 2½f out - 4th turning into straight - dropped away final furlong to finish 6th 6/14 4¼ 9-11 5582C64C Robert Whearty 9/1
08 Jul 25+8d Tramore Follow Tote On X Claiming Race 12f · Good · 7 ran Towards the back of the pack early - moved up to 5th at halfway - advanced into 2nd over 4f out - lost a place and slipped to 3rd 2f out before responding under pressure inside the final furlong to claim 2nd near the line 2/7 ¾ 8-8 5396A72A Leigh Roche 14/1
30 Jun 25+34d Ffos Las Swift Sprite Sprint At 3A's Handicap Class 6 · 16f · Good To Soft · 8 ran Settled towards the back - made progress from 3f out and pressed for the lead over 1f out - lost ground final furlong to finish fourth 4/8 1½ 8-13 54110B62A Richard Kingscote 7/1
27 May 25+324d Tipperary Visit Tipperary Handicap (0-60) 12.5f · Yielding To Soft · 12 ran Settled in the pack - pressed for effort but couldn't land a challenge over 2f out - well held at the finish 7/12 6½ 9-12 5669C57C Dylan Browne McMonagle 20/1
07 Jul 24+20d Sligo Family Day At Sligo Races Maiden Hurdle 17.5f · Good To Yielding · 12 ran 4/12 ½ 10-13 —90C91C Kevin Sexton 18/1
17 Jun 24+341d Gowran Park Membership At Gowran Park Golf Club Handicap (47-65) 7f · Good · 14 ran 12/14 1¾ 9-8 6270C54A Robert Whearty 22/1
12 Jul 23+18d Fairyhouse Fairyhouse Summer Season Claiming Race 10f · Good · 11 ran 11/11 3¾ 10-0 6793A47A Conor Maxwell 20/1
24 Jun 23+39d Down Royal Polypipe Handicap 10.5f · Good · 10 ran 8/10 hd 9-1 6777C46C Oisin McSweeney 8/1
16 May 23+9d Sligo Irish Stallion Farms EBF Median Auction Maiden 10.5f · Good To Yielding · 11 ran 5/11 nk 9-3 6794A70A Oisin McSweeney 14/1
07 May 23+21d Leopardstown Captain Dara Fitzpatrick Memorial Maiden 12f · Soft To Heavy · 10 ran 8/10 14 9-5 —64C62C Luke McAteer 125/1
16 Apr 23+16d Curragh Tote Fantasy Who's In Your Stable Irish European Breeders Fund Maiden 10f · Heavy · 12 ran 5/12 1¾ 9-8 —70C63C Rory Cleary 150/1
31 Mar 23+174d Dundalk (AW) View Restaurant At Dundalk Stadium Maiden 10.5f · Standard · 14 ran 8/14 nk 9-8 —73B56A Rory Cleary 200/1
08 Oct 22 Curragh Mongey Communications Irish European Breeders Fund Maiden 9f · Yielding To Soft · 15 ran 12/15 4¾ 9-7 —26C49C Mark Enright 125/1

Quick answers

How many races has Serotonin (GB) won?
Serotonin (GB) has yet to win, from 18 archived starts between 2022 and 2025. Placed 2 times in total (11.1% of starts).
Who trains Serotonin (GB)?
Serotonin (GB) is trained by Paul W Flynn, who saddled the horse on its most recent run on 27 October 2025.
Who is Serotonin (GB)'s sire?
Serotonin (GB) is by Fast Company (IRE) out of Victorian Beauty (USA), whose sire is Rahy.
What is Serotonin (GB)'s official rating?
The most recent official rating on record is 53, from the run on 27 October 2025. The highest on record is 67.
What is Serotonin (GB)'s sire's record?
Fast Company (IRE)'s progeny in our archive have won 9.4% of 7,589 runs since Jan 2008 (492 horses), Flat and jumps together. Strongest on heavy going: 12.7% from 557. Strongest over 2m5f – 3m (all codes): 12.8% from 109.
Who are Serotonin (GB)'s siblings?
Out of Victorian Beauty (USA), Serotonin (GB) has 3 other produce in our archive, 2 of them winners. Most wins: Victoriano (IRE) (7). Highest grade won: Class 4 (Victoriano (IRE)). The wins came over 1m1½f–2m½f. As at Oct 2026.

Record shown from October 2022. 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.