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Horse profile

Aachen (USA)

2yo colt · Trainer A P O'Brien · Owner Derrick Smith Mrs John Magnier Michael Tabor
by Gun Runner (USA) out of Monday (USA) (Fastnet Rock)
1 run · 1 course · from Aug 2026
As at 18 Oct 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Ran 63 days ago · 3rd of 13
KTB Profile

Aachen is a lightly raced colt by Gun Runner out of the Fastnet Rock mare Monday. His dam has produced three runners for one winner, Trojan Warrior. He made a promising start when third of 13 in the Irish Stallion Farms EBF Maiden at Dundalk on standard going over 1m in Aug 2026. The yard is A P O'Brien.

Based on 1 archived run · updated 18 Oct 2026

KTB Speed and Rating

KTB Speed

Best recent Speed 82 the best of the last 1 graded (A or B) run · Dundalk (AW) (IRE), 15 Aug 2026

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 1 figure · too few for a breakdown

KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 1 figure from 1 run · as at 3 Oct 2026 · a record, not a forecast

KTB Rating

Best recent KTB Rating 75A the best of the last 1 rated run · Dundalk (AW) (IRE), 15 Aug 2026

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 1 figure · too few for a breakdown

KTB Rating v1 · batch 3 Oct 2026 · GB & Irish racing only · 1 figure from 1 run · 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.

Pedigree intelligence

Sire
Gun Runner (USA)

Progeny in our archive have won 9.8% of 61 runs since Jan 2008 (16 horses).

GoingRunsWinsSRvs sireThis horse
Good to Firm500%−9.8—
Good1218.3%−1.5—
Good to Soft7114.3%+4.5—
Soft900%−9.8—
Heavy400%−9.8—
Standard (AW)24416.7%+6.90 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f100%−9.8—
6f – 7f800%−9.8—
1m – 1m1f22313.6%+3.80 from 1
1m2f – 1m4f19315.8%+6—
1m5f – 2m300%−9.8—
2m1f – 2m4f700%−9.8—
2m5f – 3m100%−9.8—

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
Monday (USA) (Fastnet Rock)

3 siblings in the archive, 1 winner — best of them Trojan Warrior (USA) (1 win).

The wins came over 6f.

ProduceRunsWinsWin tripsBest grade
Trojan Warrior (USA)316f—
One Of A Kind (IRE)50——
Aachen (USA)20——

Too few runs for meaningful splits. The full record is below.

Form

DateCourseRace PosBtn Wgt SpdKTB Jockey SP
15 Aug 26 Dundalk (AW) (IRE) Irish Stallion Farms EBF Maiden 8f · Standard · 13 ran Slow to begin - settled towards the back of the pack - 9th at halfway - urged forward with 2f remaining - improved into 5th inside the final furlong - up to 3rd close home - stayed on at one gear to the line 3/13 1¾ 9-2 82B75A Jack Cleary 12/1

Quick answers

How many races has Aachen (USA) won?
Aachen (USA) has yet to win, from 1 archived start in 2026. Placed 1 time in total (100% of starts).
Who trains Aachen (USA)?
Aachen (USA) is trained by A P O'Brien, who saddled the horse on its most recent run on 15 August 2026.
Who is Aachen (USA)'s sire?
Aachen (USA) is by Gun Runner (USA) out of Monday (USA), whose sire is Fastnet Rock.
What is Aachen (USA)'s sire's record?
Gun Runner (USA)'s progeny in our archive have won 9.8% of 61 runs since Jan 2008 (16 horses), Flat and jumps together.
Who are Aachen (USA)'s siblings?
Out of Monday (USA), Aachen (USA) has 3 other produce in our archive, 1 of them a winner. Most wins: Trojan Warrior (USA) (1). The wins came over 6f. As at Oct 2026.

Record shown from August 2026. 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.