Horse profile
Thunder Star (GB)
36 runs · 12 courses · from Jun 2022
As at 18 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
5 wins · Doncaster, Yarmouth & Haydock
Off 128 days · 4th of 5
Last raced off OR 70
KTB Profile
Thunder Star is a mare with five wins from 36 starts, all of them on turf over trips under 6f. She won a Class 5 handicap at Doncaster in Mar 2025 off an official rating of 68 and has also scored at Yarmouth and Haydock. Typically held up, she finished fourth of five at Yarmouth in Jun 2026 in a Class 5 handicap, last raced off an official rating of 70 which was 11lb below her highest ever mark.
Based on 36 archived runs · run-style from 9 commented runs · updated 18 Oct 2026
KTB at a glance
Typically held up
All wins on turf
OR ↓ 11lb off peak
- 5–36Wins / Runs
- 13.9%Strike rate
- 14 (38.9%)Placed
- +10.50£1 level staken=36 at SP
- 1.14Fair A/E n=36 · 0.99 incl. margin
- 81Highest OR
- 42dAvg between runs
A/E compares actual wins with what starting prices implied. "Fair" strips the bookmaker margin from the expectation, so favourites and longshots are judged on the same footing — figures near 1.00 mean the market priced this horse about right.
Official rating70↓ 11lb off peak
70
65–81
KTB Speed and Rating
KTB Speed
Best recent Speed 92
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
| Going | Runs | Best | Median | Since 18 Oct 2025 |
|---|---|---|---|---|
| Good | 9 | 106A | 92 | 3 · 92 / 85 |
| Standard (AW) | 8 | 105A | 94 | — |
| Good to Soft | 7 | 132C | 89 | 2 · 89 / 86.5 |
| Good to Firm | 6 | 98A | 83 | — |
| Soft | 4 | 107C | 92.5 | 1 · — |
| Heavy | 2 | 110C | 93.5 | — |
| Distance | Runs | Best | Median | Since 18 Oct 2025 |
|---|---|---|---|---|
| Under 6f | 34 | 132C | 90 | 6 · 107 / 87 |
| 6f – 7f | 2 | 82B | 77.5 | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 36 figures from 36 runs · as at 3 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 9 analysed runs
- Held up 7 (78%) · 0 wins
- Prominent 1 (11%) · 0 wins
- Midfield 1 (11%) · 1 win
Pedigree intelligence
Sire
Progeny in our archive have won 16.3% of 5,056 runs since Jan 2008 (559 horses).
Weakest over 1m5f – 2m (all codes): 7% from 157.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 4 | 2 | 50% | +33.7 | — |
| Good to Firm | 831 | 154 | 18.5% | +2.2 | 1 from 6 |
| Good | 1,217 | 199 | 16.4% | +0.1 | 1 from 9 |
| Good to Soft | 579 | 92 | 15.9% | −0.4 | 2 from 7 |
| Soft | 698 | 118 | 16.9% | +0.6 | 1 from 4 |
| Heavy | 213 | 36 | 16.9% | +0.6 | 0 from 2 |
| Standard (AW) | 1,514 | 224 | 14.8% | −1.5 | 0 from 8 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 382 | 60 | 15.7% | −0.6 | 5 from 34 |
| 6f – 7f | 2,111 | 372 | 17.6% | +1.3 | 0 from 2 |
| 1m – 1m1f | 1,351 | 205 | 15.2% | −1.1 | — |
| 1m2f – 1m4f | 997 | 171 | 17.2% | +0.9 | — |
| 1m5f – 2m | 157 | 11 | 7% | −9.3 | — |
| 2m1f – 2m4f | 47 | 5 | 10.6% | −5.7 | — |
| 2m5f – 3m | 9 | 1 | 11.1% | −5.2 | — |
| Over 3m | 2 | 0 | 0% | −16.3 | — |
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
4 siblings in the archive, 2 winners — best of them Dark Side Prince (GB) (11 wins).
The wins came over 5f–7f; the highest grade won is Class 4 (Dark Side Thunder (GB)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Dark Side Prince (GB) | 53 | 11 | 5f | Class 5 |
| Dark Side Thunder (GB) | 51 | 9 | 6f–7f | Class 4 |
| Dark Side Premier (GB) | 5 | 0 | — | — |
| Dark Side Diamond (GB) | 2 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Good | 9 | 1 | 11% | −2.00 |
| Standard (AW) | 8 | 0 | 0% | −8.00 |
| Good to Soft | 7 | 2 | 29% | +21.00 |
| Good to Firm | 6 | 1 | 17% | +0.00 |
| Soft | 4 | 1 | 25% | +1.50 |
| Heavy | 2 | 0 | 0% | −2.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 5 | 17 | 3 | 18% | +1.50 |
| Class 4 | 16 | 2 | 13% | +12.00 |
| Class 2 | 2 | 0 | 0% | −2.00 |
| Class 3 | 1 | 0 | 0% | −1.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Yarmouth | 8 | 2 | 25% | +7.00 |
| Haydock | 6 | 1 | 17% | +13.00 |
| Newcastle (AW) | 4 | 0 | 0% | −4.00 |
| Doncaster | 3 | 2 | 67% | +9.50 |
| Newmarket | 3 | 0 | 0% | −3.00 |
| York | 3 | 0 | 0% | −3.00 |
| Thirsk | 2 | 0 | 0% | −2.00 |
| Chelmsford City (AW) | 2 | 0 | 0% | −2.00 |
| Southwell (AW) | 2 | 0 | 0% | −2.00 |
| Beverley | 1 | 0 | 0% | −1.00 |
| Ascot | 1 | 0 | 0% | −1.00 |
| Nottingham | 1 | 0 | 0% | −1.00 |
| Distance | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Under 6f | 34 | 5 | 15% | +12.50 |
| 6f – 7f | 2 | 0 | 0% | −2.00 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Lewis Edmunds | 24 | 3 | 13% | +11.00 |
| George Wood | 3 | 0 | 0% | −3.00 |
| Harrison Shaw | 2 | 0 | 0% | −2.00 |
| Laura Pearson | 2 | 1 | 50% | +3.50 |
| Rhys Elliott | 1 | 0 | 0% | −1.00 |
| Warren Fentiman | 1 | 0 | 0% | −1.00 |
| Tom Marquand | 1 | 0 | 0% | −1.00 |
| Connor Planas | 1 | 1 | 100% | +5.00 |
| Hollie Doyle | 1 | 0 | 0% | −1.00 |
| Headgear | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| None | 18 | 4 | 22% | +21.50 |
| Cheekpieces | 13 | 1 | 8% | −6.00 |
| Blinkers | 4 | 0 | 0% | −4.00 |
| Visor | 1 | 0 | 0% | −1.00 |
| Season | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2026 | 4 | 0 | 0% | −4.00 |
| 2025 | 11 | 1 | 9% | −4.00 |
| 2024 | 8 | 0 | 0% | −8.00 |
| 2023 | 7 | 3 | 43% | +13.50 |
| 2022 | 6 | 1 | 17% | +13.00 |
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
| Date | Course | Race | Pos | Btn | Wgt | OR | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|---|
| 11 Jun 26+6d | Yarmouth | Winning Experience With Moulton Racing Handicap Settled just behind the leader - driven approaching final furlong - gave up second spot inside final furlong - eased back to fourth close home | 4/5 | hd | 9-4 | 70 | 107C | 78B | George Wood | 11/4 |
| 05 Jun 26+55d | Thirsk | David Ritchie Is 50! Happy Birthday! Fillies' Handicap Settled midpack early - pressed for effort with 2f left and edged off a straight line approaching the furlong marker - finished strongly through the closing stages - denied by a narrow head-bob at the line | 2/11 | hd | 9-11 | 70 | 92A | 95A | Rhys Elliott | 13/2 |
| 11 Apr 26+13d | Yarmouth | TigerBet.co.uk Price Boosts Handicap Held up at the back - driven from over 2f out - unable to quicken and beaten well into 6th | 6/6 | 5½ | 9-2 | 72 | 85A | 49B | Lewis Edmunds | 11/1 |
| 29 Mar 26+149d | Doncaster | William Hill Price Boosts Every Day Handicap Up with the front group on the far flank - nudged into contention 2f out - faded through the closing stages | 9/17 | 1 | 9-7 | 73 | 89C | 78A | Lewis Edmunds | 16/1 |
| 31 Oct 25+10d | Newmarket | 156 Grosser Preis Von Baden Handicap Settled around midpack - pressed for effort with 2f left - lost touch inside final furlong - finished well held in 9th | 9/11 | ½ | 9-1 | 72 | 85A | 64A | George Wood | 9/1 |
| 21 Oct 25+4d | Yarmouth | bettingsites.co.uk Betting Sites Handicap Handy early - hit the front approaching 2f out before losing that advantage inside the final furlong - stayed on for second | 2/10 | 1½ | 9-3 | 74 | 84A | 89A | Lewis Edmunds | 14/1 |
| 17 Oct 25+31d | Haydock | BOG Today For Tomorrow With CopyBet Handicap Sat close to the pace early - asked for effort with 2f left - dropped away inside final furlong to finish 10th | 10/10 | ½ | 9-9 | 74 | 73A | 63A | Lewis Edmunds | 17/2 |
| 16 Sep 25+96d | Yarmouth | Winning Experience With Moulton Racing Handicap Tracked the far-rail leader - came under pressure and faded from 1f out - seventh | 7/7 | 2¼ | 9-7 | 75 | 89A | 66A | Lewis Edmunds | 7/2F |
| 12 Jun 25+49d | Yarmouth | Winning Experience With Moulton Racing Handicap Settled at back early - moved up and angled to the inside rail inside final 2f - into second a furlong out - driven late and edged closer but denied by a whisker | 2/6 | nse | 9-7 | 72 | 98A | 105B | George Wood | 7/4F |
| 24 Apr 25+25d | Beverley | Happy Birthday Andrew Hill Handicap Raced up with the front group pulling hard - lost ground a furlong out - unable to find more inside final furlong finishing sixth | 6/13 | ½ | 9-2 | 73 | 89C | 80A | Lewis Edmunds | 10/3J |
| 30 Mar 25+45d | Doncaster | William Hill Betting Done Properly Handicap Slow to break - settled midfield - made progress a furlong and a half out - hit front close to home - kept driving to the line | 1/17 | 9-5 | 68 | 98C | 99A | Lewis Edmunds | 6/1F | |
| 13 Feb 25+14d | Chelmsford City (AW) | It's Never Ordinary At bet365 Handicap Slow to break - held towards back throughout - never landed a threat - finished sixth beaten 5 lengths | 6/6 | 1¼ | 8-13 | 70 | 105A | 62B | Lewis Edmunds | 7/1 |
| 30 Jan 25+20d | Chelmsford City (AW) | 6 Horses Challenge At bet365 Handicap Drifted right at the outset - sat behind the front group before jinking off the rail 4f out - stayed on inside the final furlong to finish third | 3/6 | ¾ | 9-1 | 71 | 97A | 73B | Warren Fentiman | 9/2 |
| 10 Jan 25+8d | Newcastle (AW) | Weekly 5 Free Bet With BetUK Handicap Sat just behind the leader - edged back to third inside the final furlong - stayed on without the speed to get closer | 3/8 | ¾ | 9-9 | 72 | 91A | 88A | Lewis Edmunds | 8/1 |
| 02 Jan 25+52d | Newcastle (AW) | Weekly 5 Free Bet With BetUK Handicap Sat close to the pace - driven up to hit the front a furlong out - collared and unable to find more in the closing stages finishing second | 2/7 | ¾ | 9-8 | 72 | 105A | 82A | Lewis Edmunds | 6/1 |
| 11 Nov 24+10d | Newcastle (AW) | Weekly 5 Free Bet With BetUK Handicap Settled at rear early - made progress on the far flank two out - pushed along to move into second inside final furlong but no match for winner | 2/7 | 3¼ | 9-11 | 72 | 103A | 89A | Lewis Edmunds | 9/1 |
| 01 Nov 24+45d | Newmarket | Munich's Grosser Dallmayr-Preis Handicap Held up eagerly in a forward spot early - moved across left at halfway - closed on the front pack a furlong out - got up into third close home - stayed on well to finish | 3/11 | 1 | 9-7 | 73 | 106A | 93A | Lewis Edmunds | 11/2 |
| 17 Sep 24+11d | Yarmouth | Retro Industrial Cleaning Services Handicap Held up in midfield on the far flank - improved to sit close to the front around 2f out - pushed along and faded in the last furlong to finish 6th | 6/9 | 1 | 9-7 | 75 | 102A | 75A | Lewis Edmunds | 5/2F |
| 06 Sep 24+76d | Haydock | Lee Thomas Christy Memorial Handicap Held up towards the back on the inner - pushed for effort with over 2f left - kept going without threatening the finish | 7/13 | 1¾ | 9-9 | 77 | 132C | 83A | Harrison Shaw | 11/1 |
| 22 Jun 24+16d | Haydock | Long Shot Seltzer Spring Fillies' Handicap | 6/9 | ½ | 9-9 | 78 | 89B | 72A | Harrison Shaw | 9/2 |
| 06 Jun 24+36d | Haydock | Betfred Supports Jack Berry House Handicap | 2/13 | 2 | 9-9 | 78 | 100C | 104A | Lewis Edmunds | 5/1F |
| 01 May 24+22d | Ascot | Naas Racecourse Handicap (Div 2) | 4/8 | ¾ | 9-4 | 80 | 80A | 80A | Tom Marquand | 10/1 |
| 09 Apr 24+179d | Thirsk | Download The Vickers.Bet App Handicap | 3/13 | 6½ | 9-8 | 81 | 110C | 97A | Lewis Edmunds | 12/1 |
| 13 Oct 23+24d | York | Copper Knight - Winning Most Horse At York Handicap | 9/12 | ½ | 8-9 | 81 | 65A | 67A | Lewis Edmunds | 10/1 |
| 19 Sep 23+27d | Yarmouth | Stephenson Smart Accountants To Bet On Handicap | 1/10 | 9-7 | 76 | 109A | 108A | Lewis Edmunds | 8/1 | |
| 23 Aug 23+18d | York | Ire Incentive, It Pays To Buy Irish Fillies' Handicap (Heritage Handicap) | 9/14 | 1¼ | 8-2 | 76 | 84C | 73A | Laura Pearson | 22/1 |
| 05 Aug 23+36d | Doncaster | UNISON Supporting Black Workers Handicap | 1/6 | 9-4 | 70 | 99B | 90B | Laura Pearson | 9/2 | |
| 30 Jun 23+69d | Yarmouth | Quinnbet Quarterback Fillies' Handicap | 1/7 | 9-0 | 65 | 81A | 76A | Connor Planas | 5/1 | |
| 22 Apr 23+13d | Nottingham | Castle Rock Neil Kelso Memorial Handicap | 5/6 | 4¾ | 9-2 | 68 | 86B | 54B | Lewis Edmunds | 17/2 |
| 09 Apr 23+166d | Southwell (AW) | At The Races App Market Movers Handicap | 11/13 | 1 | 9-9 | 71 | 79B | 53A | Lewis Edmunds | 14/1 |
| 25 Oct 22+11d | Newcastle (AW) | It's Time To Turn To talkSPORT Nursery | 5/6 | 3 | 9-3 | 74 | 63A | 50B | Lewis Edmunds | 6/1 |
| 14 Oct 22+23d | Haydock | Join Racing TV Now Nursery | 5/12 | nk | 9-9 | 75 | 77A | 79A | Lewis Edmunds | 6/1 |
| 21 Sep 22+47d | Southwell (AW) | Sky Sports Racing Sky 415 Fillies' Nursery | 4/9 | 1¼ | 9-9 | 75 | 73B | 77A | Lewis Edmunds | 16/5 |
| 05 Aug 22+28d | Newmarket | Watch Live On Racing TV Fillies' Novice Stakes (GBB Race) | 4/6 | 4¾ | 9-8 | 75 | 82B | 78B | Hollie Doyle | 9/2 |
| 08 Jul 22+29d | York | William Hill Play Responsibly Irish EBF Fillies' Novice Stakes (GBB Race) | 4/9 | 1 | 9-8 | — | 71A | 80A | Lewis Edmunds | 16/1 |
| 09 Jun 22 | Haydock | British Stallion Studs EBF Novice Stakes (GBB Race) | 1/7 | 9-0 | — | 92A | 80A | Lewis Edmunds | 18/1 |
Quick answers
- How many races has Thunder Star (GB) won?
- Thunder Star (GB) won 5 of 36 archived starts between 2022 and 2026, a strike rate of 13.9%. Placed 14 times in total (38.9% of starts).
- Who trains Thunder Star (GB)?
- Thunder Star (GB) is trained by Jessica Macey, who saddled the horse on its most recent run on 11 June 2026.
- Who is Thunder Star (GB)'s sire?
- Thunder Star (GB) is by Night Of Thunder (IRE) out of Dark Side Princess (GB), whose sire is Strategic Prince.
- What going does Thunder Star (GB) prefer?
- Thunder Star (GB) has the best record on good to soft going: 2 wins from 7 starts (28.6%). Only going bands with at least three archived starts are read, so this is a direction rather than a settled preference.
- What is Thunder Star (GB)'s official rating?
- The most recent official rating on record is 70, from the run on 11 June 2026. The highest on record is 81.
- What is Thunder Star (GB)'s sire's record?
- Night Of Thunder (IRE)'s progeny in our archive have won 16.3% of 5,056 runs since Jan 2008 (559 horses), Flat and jumps together. Weakest over 1m5f – 2m (all codes): 7% from 157.
- Who are Thunder Star (GB)'s siblings?
- Out of Dark Side Princess (GB), Thunder Star (GB) has 4 other produce in our archive, 2 of them winners. Most wins: Dark Side Prince (GB) (11). Highest grade won: Class 4 (Dark Side Thunder (GB)). The wins came over 5f–7f. As at Oct 2026.