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Horse profile

Boston Blue (GB)

10yo gelding (at last run, Nov 2017) · Last trainer Tony Carroll · Last owner B J Millen
by Halling (USA) out of City of Gold (IRE) (Sadler's Wells)
64 runs · 25 courses · from Oct 2009
As at 27 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 20 Nov 2017 — 3,263 days ago. Our archive can't say whether the horse is still in training.
Last run Nov 2017 · 4th of 4 7 wins · 6 courses Last raced off OR 105
KTB Profile

Boston Blue (GB) is 7 from 64. Hasn't won since Dec 2014. Last raced off 105, 13lb below the career-high mark.

Based on 64 archived runs · updated 27 Oct 2026
KTB at a glance OR ↓ 13lb off peak
Official rating105↓ 13lb off peak
105 51–118

KTB Speed and Rating

KTB Speed

Best recent Speed — no A or B graded figure in the last 3 runs; the figures below carry grade C

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 →

Jumps 2 figures · best 69C · median 60
GoingRunsBestMedianSince 27 Oct 2025
Good to Firm269C60—
DistanceRunsBestMedianSince 27 Oct 2025
1m5f – 2m269C60—

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 2 figures from 2 runs · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating (jumps) 114A the best of the last 3 rated runs · Stratford, 17 Jul 2016 Official rating 105 at the last jumps run, 20 Nov 2017

Best recent KTB Rating (flat) 63B the best of the last 3 rated runs · Lingfield (AW), 1 Apr 2016 Official rating 51 at the last flat run, 1 Apr 2016

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 →

Jumps 19 figures · best 138B · median 106
GoingRunsBestMedianSince 27 Oct 2025
Heavy6119A110—
Good to Firm3106A93—
Good3129A114—
Good to Soft3123A91—
Soft3138B107—
Standard (AW)1———
DistanceRunsBestMedianSince 27 Oct 2025
1m5f – 2m14138B102.5—
2m1f – 2m4f5115A108—
Flat 43 figures · best 89A · median 67
GoingRunsBestMedianSince 27 Oct 2025
Standard (AW)2074A62.5—
Good1389A71—
Soft487A69—
Good to Firm384B83—
Good to Soft283A72.5—
Heavy1———
DistanceRunsBestMedianSince 27 Oct 2025
1m5f – 2m2482A67.5—
1m2f – 1m4f1689A63.5—
1m – 1m1f272A71—
2m1f – 2m4f1———

Of 64 runs looked at, 2 have no figure: did not complete (or a non-runner row) (2).

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 62 figures from 64 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
Halling (USA)

Progeny in our archive have won 11% of 6,095 runs since Jan 2008 (409 horses).

Weakest over 2m5f – 3m (all codes): 4.8% from 187.

GoingRunsWinsSRvs sireThis horse
Firm72811.1%+0.1—
Good to Firm1,15114612.7%+1.71 from 6
Good1,60617911.1%+0.13 from 16
Good to Soft7518311.1%+0.10 from 6
Soft7898911.3%+0.31 from 8
Heavy2562810.9%−0.11 from 7
Standard (AW)1,4701369.3%−1.71 from 21
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f3638.3%−2.7—
6f – 7f578488.3%−2.7—
1m – 1m1f979939.5%−1.50 from 2
1m2f – 1m4f2,07924711.9%+0.92 from 16
1m5f – 2m1,59219612.3%+1.35 from 39
2m1f – 2m4f6146811.1%+0.10 from 7
2m5f – 3m18794.8%−6.2—
Over 3m30516.7%+5.7—

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
City of Gold (IRE) (Sadler's Wells)

2 siblings in the archive, 1 winner — best of them Mabuya (UAE) (2 wins).

The wins came over 1m2f–1m4f; the highest grade won is Class 4 (Mabuya (UAE)).

ProduceRunsWinsWin tripsBest grade
Mabuya (UAE)2221m2f–1m4fClass 4
History Girl (IRE)70——

Record by conditions

GoingRunsWinsSR£1
Standard (AW) 21 1 5% −16.50
Good 16 3 19% +0.25
Soft 8 1 13% −1.50
Heavy 7 1 14% −1.50
Good to Firm 6 1 17% −2.25
Good to Soft 6 0 0% −6.00

ClassRunsWinsSR£1
Class 5 27 6 22% +5.00
Class 4 21 0 0% −21.00
Class 6 12 1 8% −7.50
Class 3 3 0 0% −3.00
Class 2 1 0 0% −1.00

CourseRunsWinsSR£1
Kempton (AW) 13 1 8% −8.50
Leicester 7 1 14% −0.50
Lingfield (AW) 6 0 0% −6.00
Doncaster 6 1 17% +2.00
Goodwood 6 2 33% +2.25
Kempton 2 0 0% −2.00
Chepstow 2 0 0% −2.00
Windsor 2 0 0% −2.00
Wolverhampton (AW) 2 0 0% −2.00
Uttoxeter 2 1 50% +3.50
York 2 0 0% −2.00
Towcester 1 0 0% −1.00
Stratford 1 0 0% −1.00
Sandown 1 0 0% −1.00
Newcastle 1 0 0% −1.00
Brighton 1 1 100% +2.75
Salisbury 1 0 0% −1.00
Epsom Downs 1 0 0% −1.00
Thirsk 1 0 0% −1.00
Newmarket 1 0 0% −1.00
Musselburgh 1 0 0% −1.00
Newbury 1 0 0% −1.00
Haydock 1 0 0% −1.00
Nottingham 1 0 0% −1.00
Ripon 1 0 0% −1.00

DistanceRunsWinsSR£1
1m5f – 2m 39 5 13% −9.50
1m2f – 1m4f 16 2 13% −9.00
2m1f – 2m4f 7 0 0% −7.00
1m – 1m1f 2 0 0% −2.00

JockeyRunsWinsSR£1
Jim Crowley 14 2 14% −5.75
Lee Edwards 9 2 22% +5.50
Mr C Carroll 3 1 33% +0.25
George Baker 3 1 33% +2.00
Liam Keniry 3 0 0% −3.00
Nick Slatter 2 0 0% −2.00
Tom Queally 2 0 0% −2.00
Josh Hamer 2 0 0% −2.00
Wayne Hutchinson 2 0 0% −2.00
Harry Bentley 2 0 0% −2.00
Dale Swift 2 0 0% −2.00
Shane Kelly 2 0 0% −2.00
Harry Stock 1 0 0% −1.00
Miss Sophie Coll 1 0 0% −1.00
Ryan Hatch 1 0 0% −1.00
Mr Michael J Murphy 1 0 0% −1.00
Russell Harris 1 0 0% −1.00
Trevor Whelan 1 0 0% −1.00
Mr Max Chenery 1 0 0% −1.00
George Downing 1 0 0% −1.00
Jimmy Quinn 1 0 0% −1.00
Martin Lane 1 0 0% −1.00
Graham Lee 1 0 0% −1.00
Noel Fehily 1 0 0% −1.00
Lucy K Barry 1 0 0% −1.00
Robert Kirk 1 1 100% +4.50
Mattie Batchelor 1 0 0% −1.00
Jamie Spencer 1 0 0% −1.00
Royston Ffrench 1 0 0% −1.00
Martin Dwyer 1 0 0% −1.00

HeadgearRunsWinsSR£1
None 54 7 13% −17.50
Visor 6 0 0% −6.00
Cheekpieces 3 0 0% −3.00
Blinkers 1 0 0% −1.00

SeasonRunsWinsSR£1
2017 2 0 0% −2.00
2016 7 0 0% −7.00
2015 5 0 0% −5.00
2014 10 1 10% −3.50
2013 12 2 17% +0.50
2012 6 2 33% +3.25
2011 11 1 9% −7.75
2010 9 1 11% −4.00
2009 2 0 0% −2.00

TypeRunsWinsSR£1
Flat 43 4 9% −26.50
Hurdle 16 3 19% +4.00
Chase 5 0 0% −5.00

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 · 2 runs
20 Nov 17+189d Leicester John O'gaunt Beginners' Chase Class 3 · 16f · Good To Firm · 4 ran 4/4 35 10-9 10551C88C Harry Stock 50/1
15 May 17+302d Towcester Toteexacta Beginners' Chase Class 4 · 16f · Good To Firm · 5 ran 2/5 28 11-2 10569C93B Lee Edwards 8/1
2016 · 7 runs
17 Jul 16+62d Stratford Amber Security Selling Hurdle Class 5 · 18.5f · Good · 9 ran 4/9 ¾ 11-12 110—114A Lee Edwards 18/1
16 May 16+45d Kempton Apollobet Cashback If You're 2nd Novices' Handicap Chase Class 4 · 18f · Good · 7 ran 3/7 1 10-13 107—108B Lee Edwards 40/1
01 Apr 16+21d Lingfield (AW) Retraining Of Racehorses Claiming Stakes Class 6 · 13f · Standard · 6 ran 5/6 nse 9-4 51—63B Jim Crowley 33/1
11 Mar 16+21d Leicester Royal Lancers Beginners' Chase Class 4 · 16f · Heavy · 4 ran 4/4 1¾ 10-11 110—94B Nick Slatter 4/1
19 Feb 16+18d Lingfield (AW) 10 Free At 32red.com Amateur Riders' Handicap Class 6 · 16f · Standard · 11 ran 7/11 ¾ 9-12 51—54C Miss Sophie Coll 33/1
01 Feb 16+10d Kempton (AW) Racing Uk Day Pass Just 10 Handicap Class 6 · 16f · Standard · 8 ran 8/8 14 9-3 52—43C Tom Queally 10/1
22 Jan 16+25d Lingfield (AW) 32red.com Classified Claiming Stakes Class 5 · 13f · Standard · 5 ran 3/5 nk 9-1 57—70B Tom Queally 16/1
2015 · 5 runs
28 Dec 15+25d Leicester Parsley Selling Hurdle Class 5 · 20.5f · Heavy · 9 ran 4/9 5 11-4 112—102C Lee Edwards 7/1
03 Dec 15+10d Leicester Barkby Conditional Jockeys' Selling Hurdle Class 5 · 20.5f · Heavy · 8 ran 2/8 3½ 11-1 113—115A Nick Slatter 8/1
23 Nov 15+239d Kempton Starlight Children's Foundation Conditional Jockeys' Handicap Hurdle Class 3 · 16f · Good To Soft · 12 ran 11/12 14 11-2 118—89C Ryan Hatch 66/1
29 Mar 15+80d Doncaster Safari Village Gentleman Amateur Riders' Handicap Class 5 · 12f · Good To Soft · 18 ran 12/18 ¾ 10-11 60—62C Mr Michael J Murphy 50/1
08 Jan 15+29d Leicester Dove Selling Hurdle Class 5 · 20.5f · Heavy · 7 ran 3/7 19 11-9 118—105C Lee Edwards 7/2
2014 · 10 runs
10 Dec 14+10d Leicester Mistletoe Selling Hurdle Class 5 · 16f · Soft · 6 ran 1/6 11-6 110—138B Lee Edwards 11/2
30 Nov 14+49d Leicester East Farndon Selling Hurdle Class 5 · 16f · Soft · 7 ran 3/7 3¾ 11-6 110—107B Lee Edwards 5/1
12 Oct 14+24d Goodwood Amateur Jockeys' Association Gentleman Amateur Handicap (Gentleman Amateur Riders) Class 5 · 12f · Soft · 10 ran 9/10 8 10-11 63—51C Mr C Carroll 25/1
18 Sep 14+16d Kempton (AW) Follow BetVictorRacing On Twitter Handicap Class 6 · 16f · Standard · 14 ran 12/14 11 9-8 54—54C Jim Crowley 8/1
02 Sep 14+150d Kempton (AW) Play Roulette & Blackjack At BetVictor.com Handicap Class 5 · 12f · Standard · 11 ran 11/11 hd 8-7 55—45C Russell Harris 33/1
05 Apr 14+29d Chepstow Unibet - By Players For Players Handicap Hurdle Class 4 · 16f · Soft · 13 ran 7/13 hd 11-1 112—92C Trevor Whelan 20/1
07 Mar 14+16d Sandown Annington Amateur Riders' Handicap Hurdle (Military Amateur Riders) Class 4 · 16f · Soft · 7 ran PU/7 — 11-11 115—— Mr Max Chenery 16/1
19 Feb 14+20d Kempton (AW) BetBright Chase Day 22.02.14 Handicap (Div 2) Class 6 · 16f · Standard · 11 ran 7/11 1¾ 9-6 56—99A Jim Crowley 8/1
30 Jan 14+22d Kempton (AW) BetVictor NonRunner Free Bet At Cheltenham Handicap Class 6 · 16f · Standard · 8 ran 4/8 ½ 9-8 56—70A Jim Crowley 3/1F
08 Jan 14+48d Doncaster Pegler Yorkshire Handicap Hurdle Class 4 · 16.5f · Good To Soft · 12 ran 10/12 14 11-5 118—91C Josh Hamer 40/1
2013 · 12 runs
21 Nov 13+15d Chepstow Pp Electrical Systems Supporting Paul's Place Handicap Hurdle Class 4 · 16f · Heavy · 7 ran 2/7 4 11-5 118—118B Josh Hamer 14/1
06 Nov 13+140d Kempton (AW) Book Christmas Festival Tickets Now Handicap Class 6 · 16f · Standard · 13 ran 12/13 32 9-9 57—61C Jim Crowley 14/1
19 Jun 13+14d Kempton (AW) Edward Kidger Handicap Class 6 · 16f · Standard · 12 ran 4/12 ½ 8-13 57—72A Jim Crowley 3/1J
05 Jun 13+14d Kempton (AW) London's Race Tracks Racingandmusic.co.uk Handicap Class 5 · 16f · Standard · 6 ran 3/6 1¼ 8-12 57—64B Jim Crowley 11/2
22 May 13+37d Kempton (AW) Conor Maynard Live At Kempton 14.09.13 Handicap Class 6 · 16f · Standard · 12 ran 1/12 9-1 54—74A Jim Crowley 7/2F
15 Apr 13+24d Windsor Royal Windsor Racing Club Handicap Class 5 · 11.5f · Soft · 14 ran 8/14 2¾ 9-3 71—61C Jim Crowley 17/2
22 Mar 13+21d Doncaster crownhotel-bawtry.com Gentleman Amateur Riders' Handicap Class 5 · 12f · Soft · 16 ran 3/16 1½ 11-2 70—87A Mr C Carroll 10/1
01 Mar 13+16d Doncaster 32redpoker.com Claiming Hurdle Class 5 · 16.5f · Good · 8 ran 1/8 11-8 114—129A Lee Edwards 7/1
13 Feb 13+16d Lingfield (AW) Crowhurst Handicap Class 6 · 16f · Standard · 10 ran 5/10 2¾ 9-5 55—58A Jim Crowley 4/1
28 Jan 13+14d Kempton (AW) Come Dine In The Panoramic Restaurant Handicap (Div 2) Class 6 · 12f · Standard · 14 ran 12/14 nk 9-2 60—56C George Downing 33/1
14 Jan 13+11d Wolverhampton (AW) Best Racing Odds Guaranteed At Bookmakers.co.uk Handicap Class 5 · 12f · Standard · 6 ran 6/6 5 9-2 67—57C Jimmy Quinn 66/1
03 Jan 13+35d Wolverhampton (AW) 50 Free Bet At Coral.co.uk Handicap Class 5 · 12f · Standard · 7 ran 7/7 20 9-7 72—52C Martin Lane 33/1
2012 · 6 runs
29 Nov 12+154d Kempton (AW) 32 Bonus Handicap Class 5 · 16f · Standard · 12 ran 12/12 12 10-0 75—62C Jim Crowley 25/1
28 Jun 12+28d Newcastle Betfred 'bonus King Bingo' Handicap Class 4 · 16f · Heavy · 7 ran 6/7 35 9-3 75—67C Graham Lee 9/2
31 May 12+75d Brighton Creative Food Courts Ltd Handicap Class 5 · 12f · Good To Firm · 6 ran 1/6 9-2 70—84B Jim Crowley 11/4F
17 Mar 12+35d Uttoxeter Betfred 'when Both Teams Score' Novices' Handicap Hurdle Class 4 · 16f · Good To Soft · 13 ran 6/13 1¾ 11-12 115—123A Noel Fehily 10/1
11 Feb 12+14d Kempton (AW) Best Odds Guaranteed With Williamhill.com Mobile Handicap Class 5 · 16f · Standard · 11 ran 5/11 1 9-6 72—68A Lucy K Barry 12/1
28 Jan 12+30d Uttoxeter Dapple Grey Maiden Hurdle Class 5 · 16f · Heavy · 9 ran 1/9 10-13 ——119A Robert Kirk 9/2
2011 · 11 runs
29 Dec 11+34d Doncaster Crownhotel-bawtry.com Maiden Hurdle Class 4 · 19.5f · Good To Soft · 15 ran F/15 — 11-0 ——— Wayne Hutchinson 14/1
25 Nov 11+46d Doncaster Yorkshire Radio Supporting Yorkshire Racing Novices' Hurdle Class 4 · 16.5f · Good To Firm · 10 ran 4/10 3¼ 10-9 ——106A Lee Edwards 7/2
10 Oct 11+32d Salisbury Bathwick Tyres 'Season Finale' Handicap Class 4 · 14f · Good · 14 ran 10/14 4 9-4 76—63A Harry Bentley 16/1
08 Sep 11+9d Epsom Downs May Family Jump Jockeys Derby Handicap (National Hunt Jockeys) Class 4 · 12f · Good To Soft · 11 ran 5/11 1¾ 11-5 69—83A Wayne Hutchinson 4/1J
30 Aug 11+31d Goodwood Halnaker Gentleman Amateur Riders' Handicap Class 5 · 11f · Good · 8 ran 1/8 11-0 69—89A Mr C Carroll 9/4J
30 Jul 11+24d Thirsk Glenridding Handicap Class 5 · 16f · Good · 11 ran 9/11 8 9-6 72—66C Mattie Batchelor 20/1
06 Jul 11+26d Kempton (AW) Lay Back And Win At betdaq.com Handicap Class 5 · 16f · Standard · 14 ran 10/14 12 9-6 74—66C Jamie Spencer 10/1
10 Jun 11+13d York Future Cleaning Services Apprentice Handicap Class 4 · 12f · Good · 16 ran 9/16 3¼ 9-4 77—65A Dale Swift 10/1
28 May 11+16d Newmarket Newmarketracecourses.co.uk Handicap Class 4 · 14f · Good · 14 ran 5/14 4½ 9-1 80—71A George Baker 16/1
12 May 11+19d York Investec Handicap Class 4 · 18f · Good · 17 ran 8/17 2 9-5 80—67A Dale Swift 16/1
23 Apr 11+207d Musselburgh Musselburgh Gold Cup Handicap Class 4 · 14f · Good · 14 ran 12/14 5 9-4 83—70C Royston Ffrench 12/1
2010 · 9 runs
28 Sep 10+16d Newbury Execution Charitable Trust Handicap Class 4 · 16f · Good · 8 ran 2/8 nse 9-4 80—81A Jim Crowley 9/2
12 Sep 10+8d Goodwood Racing UK On Sky 432 Bonus Handicap Class 4 · 16f · Soft · 13 ran 3/13 2½ 9-1 81—77A Shane Kelly 5/1
04 Sep 10+38d Haydock Fred's Lucky Numbers Handicap Class 3 · 14f · Good · 15 ran 5/15 ½ 8-13 82—79A Shane Kelly 13/2
28 Jul 10+18d Goodwood Racing Uk Handicap Class 2 · 12f · Good To Firm · 16 ran 6/16 hd 8-6 83—83A Martin Dwyer 22/1
10 Jul 10+23d Nottingham Coming Soon Wheelgate's New Animal Farm Handicap Class 4 · 14f · Good To Firm · 6 ran 3/6 nk 9-6 79—80B Liam Keniry 3/1
17 Jun 10+6d Ripon House Of Elliot Handicap Class 4 · 12f · Good · 6 ran 3/6 nk 8-11 71—79B Harry Bentley 7/4F
11 Jun 10+20d Goodwood Southern Daily Echo Maiden Handicap Class 5 · 14f · Good · 9 ran 1/9 9-5 71—82A George Baker 4/1
22 May 10+26d Goodwood Family Fun On May 31st Handicap Class 5 · 11f · Good · 8 ran 2/8 1½ 9-2 68—84A George Baker 13/2
26 Apr 10+163d Windsor Neil Sloan Welcome Along Maiden Stakes Class 5 · 10f · Good · 16 ran 12/16 2 9-3 68—50A Jim Crowley 40/1
2009 · 2 runs
14 Nov 09+19d Lingfield (AW) European Breeders' Fund Maiden Stakes (Div I) Class 5 · 8f · Standard · 12 ran 5/12 ½ 9-3 ——70A Liam Keniry 13/2
26 Oct 09 Lingfield (AW) Dormans Park Median Auction Maiden Stakes Class 6 · 8f · Standard · 11 ran 4/11 2½ 9-3 ——72A Liam Keniry 14/1

Quick answers

How many races has Boston Blue won?
Boston Blue (GB) won 7 of 64 archived starts between 2009 and 2017, a strike rate of 10.9%. Placed 14 times in total (21.9% of starts).
Who trained Boston Blue?
Boston Blue (GB) was trained by Tony Carroll on the most recent run on record, at Leicester on 20 November 2017.
Who is Boston Blue's sire?
Boston Blue (GB) is by Halling (USA) out of City of Gold (IRE), whose sire is Sadler's Wells.
What going does Boston Blue prefer?
Boston Blue (GB) has the best record on good going: 3 wins from 16 starts (18.8%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
What is Boston Blue's official rating?
The most recent official rating on record is 105, from the run on 20 November 2017. The highest on record is 118.
What is Boston Blue's sire's record?
Halling (USA)'s progeny in our archive have won 11% of 6,095 runs since Jan 2008 (409 horses), Flat and jumps together. Weakest over 2m5f – 3m (all codes): 4.8% from 187.
Who are Boston Blue's siblings?
Out of City of Gold (IRE), Boston Blue (GB) has 2 other produce in our archive, 1 of them a winner. Most wins: Mabuya (UAE) (2). Highest grade won: Class 4 (Mabuya (UAE)). The wins came over 1m2f–1m4f. As at Oct 2026.

Record shown from October 2009. 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.