As at 8 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
No run recorded since 16 Oct 2025 — 387 days ago. Our archive can't say whether the horse is still in training.
Last run Oct 2025 · 8th of 8Won at NavanLast raced off OR 92
KTB Profile
Isambard Brunel won one of five starts on turf. The colt gained his success at Navan in Oct 2024 over 1m – 1m1f on good to soft. He has not won since. His last run came at the Curragh in Oct 2025 when he finished 8 of 8 in the DNG Handicap, having raced off a mark of 92.
Based on 5 archived runs · run-style from 5 commented runs since Aug 2024 · updated 8 Nov 2026
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
KTB Speed
Best recent Speed98the best of the last 3 graded (A or B) runs · Ascot, 6 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 5 figures · best 98A · median 87
Going
Runs
Best
Median
Since 8 Nov 2025
Soft
2
98A
92.5
—
Good
2
80B
72.5
—
Good to Soft
1
—
—
—
Distance
Runs
Best
Median
Since 8 Nov 2025
1m2f – 1m4f
2
87A
76
—
1m – 1m1f
2
91A
85.5
—
6f – 7f
1
—
—
—
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 5 figures from 5 runs · as at 3 Oct 2026 · a record, not a forecast
KTB Rating
Best recent KTB Rating98Athe best of the last 3 rated runs · Navan, 9 Oct 2024Official rating 92at the last run, 16 Oct 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 — its best recent day. The KTB Rating on a racecard is a different reading of the same figures: the level the horse has been running to, an average of up to its last six runs with the latest counting most, so the two can differ. A, B or C on a run is how much known form was in that race. What this means →
Flat 5 figures · best 98A · median 84
Going
Runs
Best
Median
Since 8 Nov 2025
Soft
2
88A
81.5
—
Good
2
84A
74.5
—
Good to Soft
1
—
—
—
Distance
Runs
Best
Median
Since 8 Nov 2025
1m2f – 1m4f
2
75A
70
—
1m – 1m1f
2
98A
91
—
6f – 7f
1
—
—
—
KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 5 figures from 5 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 since Aug 2024
Led3 (60%)· 1 win
Prominent1 (20%)· 0 wins
Mid-division1 (20%)· 0 wins
Pedigree intelligence
Sire
Justify (USA)
Progeny in our archive have won 17.7% of 537 runs since May 2022 (98 horses).
Strongest over 6f – 7f (all codes): 23.2% from 151. Weakest over 1m – 1m1f (all codes): 13.8% from 167.
Going
Runs
Wins
SR
vs sire
This horse
Firm
1
0
0%
−17.7
—
Good to Firm
75
15
20%
+2.3
—
Good
167
30
18%
+0.3
0 from 2
Good to Soft
59
9
15.3%
−2.4
1 from 1
Soft
76
17
22.4%
+4.7
0 from 2
Heavy
26
3
11.5%
−6.2
—
Standard (AW)
133
21
15.8%
−1.9
—
Distance (all codes)
Runs
Wins
SR
vs sire
This horse
Under 6f
3
2
66.7%
+49
—
6f – 7f
151
35
23.2%
+5.5
0 from 1
1m – 1m1f
167
23
13.8%
−3.9
1 from 2
1m2f – 1m4f
176
26
14.8%
−2.9
0 from 2
1m5f – 2m
36
8
22.2%
+4.5
—
2m1f – 2m4f
4
1
25%
+7.3
—
Flat and jumps together (all codes) · since May 2022 · as at 8 Nov 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
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.
DNG Handicap1m2f · Yielding · 8 ranSettled just behind the pace - hit the front soon after - overtaken with 2 1/2f left and slipped back before a furlong out - faded in the closing stages to finish eighth
Boodles Raindance Dee Stakes (Listed)Class 1 · 1m2½f · Good · 7 ranPulled hard early - disputed the lead before dropping in behind after 2f - fell away sharply from 2f out to finish a well-beaten 7th
Navan Racecourse Welcomes Our Local Community Maiden1m · Good To Yielding · 11 ranSet the pace almost throughout - urged on with 2f left and challenged for a moment inside the final furlong - powered clear to the line
Isambard Brunel (USA) won 1 of 5 archived starts between 2024 and 2025, a strike rate of 20%. Placed 1 time in total (20% of starts).
Who trained Isambard Brunel?
Isambard Brunel (USA) was trained by A P O'Brien on the most recent run on record, at Curragh on 16 October 2025.
Who is Isambard Brunel's sire?
Isambard Brunel (USA) is by Justify (USA) out of Magical Dream (IRE), whose sire is Galileo.
What is Isambard Brunel's official rating?
The most recent official rating on record is 92, from the run on 16 October 2025. That is also the highest on record.
What is Isambard Brunel's sire's record?
Justify (USA)'s progeny in our archive have won 17.7% of 537 runs since May 2022 (98 horses), Flat and jumps together. Strongest over 6f – 7f (all codes): 23.2% from 151. Weakest over 1m – 1m1f (all codes): 13.8% from 167.
Who are Isambard Brunel's siblings?
Out of Magical Dream (IRE), Isambard Brunel (USA) has 4 other produce in our archive, 3 of them winners. Most wins: Royal Navy Warship (USA) (1). Highest grade won: Class 6 (Fortune Finder (USA)). The wins came over 6f–1m2f. As at Nov 2026.
Isambard Brunel (USA)·1–5·SR 20%
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