Isabella Castile (GB)
Isabella Castile won a Class 4 fillies novice stakes at Windsor in Oct 2024 on heavy ground over 6f to 7f. The filly, by Rock Of Gibraltar out of a Sixties Icon mare, has one win and three places from nine runs all at that trip. She raced prominently when fifth of 10 in a Class 4 handicap at Newbury in Aug 2025. The filly last ran off her career-high mark of 80.
- 1–9Wins / Runs
- 11.1%Strike rate
- 3 (33.3%)Placed
- −2.50£1 level staken=9 at SP
- 1.80Fair A/E n=9 · 1.50 incl. margin
- 80Highest OR
- 23dBetween runs (median)longest 173 d
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.
KTB Speed and Rating
Best recent Speed 103
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 →
| Going | Runs | Best | Median | Since 5 Nov 2025 |
|---|---|---|---|---|
| Good | 3 | 96A | 69 | — |
| Standard (AW) | 2 | 98A | 96 | — |
| Heavy | 2 | 79C | 51.5 | — |
| Good to Firm | 1 | — | — | — |
| Soft | 1 | — | — | — |
| Distance | Runs | Best | Median | Since 5 Nov 2025 |
|---|---|---|---|---|
| 6f – 7f | 9 | 103B | 79 | — |
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 9 figures from 9 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 since Aug 2024
- Prominent 4 (44%) · 1 win
- Led 3 (33%) · 0 wins
- Mid-division 1 (11%) · 0 wins
- Held up 1 (11%) · 0 wins
Pedigree intelligence
Progeny in our archive have won 9.8% of 11,566 runs since Jan 2008 (872 horses).
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 90 | 11 | 12.2% | +2.4 | — |
| Good to Firm | 1,839 | 201 | 10.9% | +1.1 | 0 from 1 |
| Good | 2,762 | 277 | 10% | +0.2 | 0 from 3 |
| Good to Soft | 1,375 | 135 | 9.8% | 0 | — |
| Soft | 1,853 | 183 | 9.9% | +0.1 | 0 from 1 |
| Heavy | 710 | 68 | 9.6% | −0.2 | 1 from 2 |
| Standard (AW) | 2,937 | 258 | 8.8% | −1 | 0 from 2 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 632 | 63 | 10% | +0.2 | — |
| 6f – 7f | 2,582 | 241 | 9.3% | −0.5 | 1 from 9 |
| 1m – 1m1f | 2,785 | 272 | 9.8% | 0 | — |
| 1m2f – 1m4f | 3,107 | 350 | 11.3% | +1.5 | — |
| 1m5f – 2m | 1,547 | 131 | 8.5% | −1.3 | — |
| 2m1f – 2m4f | 692 | 59 | 8.5% | −1.3 | — |
| 2m5f – 3m | 197 | 14 | 7.1% | −2.7 | — |
| Over 3m | 24 | 3 | 12.5% | +2.7 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 4 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
3 siblings in the archive, 1 winner — best of them Amazon Princess (GB) (1 win).
The wins came over 7f; the highest grade won is Class 6 (Amazon Princess (GB)).
| Produce | Runs | Wins | Win trips | Best grade |
|---|---|---|---|---|
| Amazon Princess (GB) | 10 | 1 | 7f | Class 6 |
| Noble Majesty (GB) | 7 | 0 | — | — |
| Quiet Jungle (GB) | 12 | 0 | — | — |
Record by conditions
| Going | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Good | 3 | 0 | 0% | −3.00 |
| Standard (AW) | 2 | 0 | 0% | −2.00 |
| Heavy | 2 | 1 | 50% | +4.50 |
| Good to Firm | 1 | 0 | 0% | −1.00 |
| Soft | 1 | 0 | 0% | −1.00 |
| Class | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Class 4 | 7 | 1 | 14% | −0.50 |
| Class 1 | 1 | 0 | 0% | −1.00 |
| Class 2 | 1 | 0 | 0% | −1.00 |
| Course | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| Newbury | 5 | 0 | 0% | −5.00 |
| Kempton (AW) | 2 | 0 | 0% | −2.00 |
| Newmarket | 1 | 0 | 0% | −1.00 |
| Windsor | 1 | 1 | 100% | +5.50 |
| Jockey | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| George Bass | 6 | 1 | 17% | +0.50 |
| Tom Marquand | 1 | 0 | 0% | −1.00 |
| David Probert | 1 | 0 | 0% | −1.00 |
| Charles Bishop | 1 | 0 | 0% | −1.00 |
| Season | Runs | Wins | SR | £1 |
|---|---|---|---|---|
| 2025 | 5 | 0 | 0% | −5.00 |
| 2024 | 4 | 1 | 25% | +2.50 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 · 5 runs | ||||||||||
| 28 Aug 25+23d | Newbury | Venatour Handicap Held handy on the near flank of the pack - urged forward with 2f left - lost momentum under pressure inside the final furlong - finished 5th | 5/10 | 3½ | 9-9 | 80 | 96A | 84A | George Bass | 18/1 |
| 05 Aug 25+82d | Newbury | Daily Bet Boosts At BetVictor Fillies' Handicap Sat close up early - asked for effort 2f out - moved into second inside final furlong under pressure but couldn't find extra until closing stages - finished fast to go down by a short head | 2/8 | nk | 9-3 | 78 | 103B | 81A | Tom Marquand | 11/1 |
| 15 May 25+10d | Kempton (AW) | Try Unibet's New Improved Acca Boosts Fillies' Handicap Broke sharply to front on the inside - pressed and dispossessed below 2f out - faded through the final furlong | 5/12 | 1½ | 8-10 | 77 | 94A | 68A | George Bass | 8/1 |
| 05 May 25+18d | Kempton (AW) | Unibet More Extra Place Races Fillies' Handicap Went straight to the front early - eased back to sit third on the rail - kept battling inside the last but narrowly denied | 2/10 | nk | 9-3 | 77 | 98A | 87A | George Bass | 17/2 |
| 17 Apr 25+173d | Newmarket | debenhams.com Handicap (Div 2) Veered right at the start and impeded others - settled in the middle of the field - closed on the front group over 2f out - found no extra from 1f out and kept on at one speed to finish 4th | 4/9 | 1 | 9-7 | 78 | 67A | 78A | David Probert | 11/1 |
| 2024 · 4 runs | ||||||||||
| 26 Oct 24+12d | Newbury | Highclere Thoroughbred Racing Stakes (Registered As The Radley Stakes) (Fillies' Listed) Set the pace early - lost the advantage at halfway and soon toiling - dropped away rapidly from 2f out - well held at the finish | 10/10 | 1 | 9-2 | 79 | 24C | 68C | George Bass | 25/1 |
| 14 Oct 24+24d | Windsor | Free Digital Racecard At raceday-ready.com Fillies' Novice Stakes (GBB Race) Tracked the pace group - pushed to the front inside the final furlong then quickly asserted - kept finding more to win | 1/13 | 8-13 | — | 79C | 95A | George Bass | 11/2 | |
| 20 Sep 24+35d | Newbury | Dubai Duty Free Full Of Surprises British EBF Fillies' Conditions Stakes (GBB Race) (Str) Sat behind the front group early - urged forward 2f out and shared second briefly - kept going without extra finish - finished third beaten 2 lengths | 3/4 | nse | 9-0 | — | 61C | 77B | Charles Bishop | 33/1 |
| 16 Aug 24 | Newbury | Tom Mitchell 70th Birthday Celebration British EBF Fillies' Novice Stakes (GBB Race) Held up early - stayed towards the back - made no impression - finished well held in 9th | 9/13 | hd | 8-13 | — | 69C | 59A | George Bass | 100/1 |
Quick answers
- How many races has Isabella Castile won?
- Isabella Castile (GB) won 1 of 9 archived starts between 2024 and 2025, a strike rate of 11.1%. Placed 3 times in total (33.3% of starts).
- Who trained Isabella Castile?
- Isabella Castile (GB) was trained by Jack Channon on the most recent run on record, at Newbury on 28 August 2025.
- Who is Isabella Castile's sire?
- Isabella Castile (GB) is by Rock Of Gibraltar (IRE) out of Last Lahar (GB), whose sire is Sixties Icon.
- What is Isabella Castile's official rating?
- The most recent official rating on record is 80, from the run on 28 August 2025. That is also the highest on record.
- What is Isabella Castile's sire's record?
- Rock Of Gibraltar (IRE)'s progeny in our archive have won 9.8% of 11,566 runs since Jan 2008 (872 horses), Flat and jumps together.
- Who are Isabella Castile's siblings?
- Out of Last Lahar (GB), Isabella Castile (GB) has 3 other produce in our archive, 1 of them a winner. Most wins: Amazon Princess (GB) (1). Highest grade won: Class 6 (Amazon Princess (GB)). The wins came over 7f. As at Nov 2026.