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Horse profile

Yellowstone Lake (FR)

3yo filly · Trainer P Twomey · Owner Zinlo Syndicate
by Sioux Nation (USA) out of Eiriamach Na Casca (IRE) (Intense Focus)
5 runs · 5 courses · from Jul 2025
As at 1 Nov 2026 · KTB archive: GB, Ireland & France · 2005–present, updated daily
Won at Dundalk (AW) First-time headgear LTO Last run 22 Jul 2026 · 15th of 15 Last raced off OR 89
KTB Profile

Yellowstone Lake is a filly who has won one of five starts. The win came at Dundalk over 6f to 7f on standard going in Sep 2025. She has never won on turf from four starts on good ground. Her last run at Naas in Jul 2026 saw her finish 15 of 15 in a Class 1 race while wearing first-time headgear and racing off her career-high mark of 89.

Based on 5 archived runs · run-style from 5 commented runs since Jul 2025 · updated 1 Nov 2026
KTB at a glance Typically prominent Won on AW, 0 on turf

KTB Speed and Rating

KTB Speed

Best recent Speed 91 the best of the last 3 graded (A or B) runs · Dundalk (AW), 26 Sep 2025

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 91B · median 86
GoingRunsBestMedianSince 1 Nov 2025
Good487A85.52 runs · 85 / 84.5
Standard (AW)1———
DistanceRunsBestMedianSince 1 Nov 2025
6f – 7f491B86.51 run · —
1m – 1m1f1——1 run · —

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 Rating 87A the best of the last 3 rated runs · Dundalk (AW), 26 Sep 2025 Official rating 89 at the last run, 22 Jul 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 — 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 91A · median 87
GoingRunsBestMedianSince 1 Nov 2025
Good491A79.52 runs · 71 / 59.5
Standard (AW)1———
DistanceRunsBestMedianSince 1 Nov 2025
6f – 7f491A87.51 run · —
1m – 1m1f1——1 run · —

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 Jul 2025

  • Prominent 3 (60%) · 1 win
  • Mid-division 1 (20%) · 0 wins
  • Held up 1 (20%) · 0 wins

Pedigree intelligence

Sire
Sioux Nation (USA)

Progeny in our archive have won 12.4% of 2,901 runs since Mar 2022 (360 horses).

Strongest on good to firm going: 17.2% from 425. Strongest at trips under 6f (all codes): 16.2% from 580. Weakest over 1m2f – 1m4f (all codes): 4.7% from 190.

GoingRunsWinsSRvs sireThis horse
Firm400%−12.4—
Good to Firm4257317.2%+4.8—
Good7377810.6%−1.80 from 4
Good to Soft2933110.6%−1.8—
Soft3904912.6%+0.2—
Heavy1131412.4%0—
Standard (AW)93911412.1%−0.31 from 1
Distance (all codes)RunsWinsSRvs sireThis horse
Under 6f5809416.2%+3.8—
6f – 7f1,58420212.8%+0.41 from 4
1m – 1m1f5315310%−2.40 from 1
1m2f – 1m4f19094.7%−7.7—
1m5f – 2m1000%−12.4—
2m1f – 2m4f6116.7%+4.3—

Flat and jumps together (all codes) · since Mar 2022 · as at 31 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast

Dam
Eiriamach Na Casca (IRE) (Intense Focus)

4 siblings in the archive, 2 winners — best of them Belafonte (FR) (3 wins).

The wins came over 1m–1m2½f; the highest grade won is Class 4 (Extraordinaire (FR)).

ProduceRunsWinsWin tripsBest grade
Belafonte (FR)931m–1m2½f—
Extraordinaire (FR)511mClass 4
Von Fersen (IRE)30——
Gustav Vasa (IRE)10——

Record by conditions

GoingRunsWinsSR£1
Good 4 0 0% −4.00
Standard (AW) 1 1 100% +1.20

ClassRunsWinsSR£1
Class 1 1 0 0% −1.00

CourseRunsWinsSR£1
Naas (IRE) 1 0 0% −1.00
Navan 1 0 0% −1.00
Dundalk (AW) 1 1 100% +1.20
Curragh 1 0 0% −1.00
Leopardstown 1 0 0% −1.00

DistanceRunsWinsSR£1
6f – 7f 4 1 25% −1.80
1m – 1m1f 1 0 0% −1.00

JockeyRunsWinsSR£1
W J Lee 3 1 33% −0.80
Chris Hayes 2 0 0% −2.00

HeadgearRunsWinsSR£1
None 4 1 25% −1.80
Cheekpieces 1 0 0% −1.00

SeasonRunsWinsSR£1
2026 2 0 0% −2.00
2025 3 1 33% −0.80

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
2026 · 2 runs
22 Jul 26+45d Naas (IRE) Yeomanstown Stud Irish EBF Stakes (Listed) Class 1 · 6f · Good · 15 ran Positioned on the inner and settled in the pack - unable to make an impact from 2f out - soon began to fade 15/15 5½ 9-2 8984C48C W J Lee 12/1
07 Jun 26+254d Navan Darley Irish EBF Kooyonga Stakes (Fillies' And Mares' Listed) 1m · Good · 9 ran Slow to break - held at back of field - driven into contention 2f out - unable to find more late 6/9 1¾ 8-12 8985A71A W J Lee 6/1
2025 · 3 runs
26 Sep 25+48d Dundalk (AW) Irish Stallion Farms EBF Fillies Maiden 7f · Standard · 13 ran Sat just behind the front pair early - disputed second at halfway before going in front 2f out - driven out and stayed on strongly to the line for the win 1/13 9-2 —91B87A W J Lee 6/5F
09 Aug 25+23d Curragh Grand Hotel Malahide Irish European Breeders Fund Fillies Juvenile Race 7f · Good · 10 ran Sat behind the front group early - pushed along in 5th with 2f left - up to 3rd a furlong out - eased back to 4th close home and held for that spot 4/10 nk 9-0 —87A88A Chris Hayes 7/2
17 Jul 25 Leopardstown Irish EBF Median Sires Series Maiden 6½f · Good · 14 ran Sat just behind pace - 4th at halfway - urged forward with 2f to go - driven approaching the final furlong - stayed on strongly but denied close home 2/14 nk 9-1 —86C91A Chris Hayes 10/3

Quick answers

How many races has Yellowstone Lake won?
Yellowstone Lake (FR) won 1 of 5 archived starts between 2025 and 2026, a strike rate of 20%. Placed 2 times in total (40% of starts).
Who trains Yellowstone Lake?
Yellowstone Lake (FR) is trained by P Twomey, who saddled the horse on its most recent run on 22 July 2026.
Who is Yellowstone Lake's sire?
Yellowstone Lake (FR) is by Sioux Nation (USA) out of Eiriamach Na Casca (IRE), whose sire is Intense Focus.
What is Yellowstone Lake's official rating?
The most recent official rating on record is 89, from the run on 22 July 2026. That is also the highest on record.
What is Yellowstone Lake's sire's record?
Sioux Nation (USA)'s progeny in our archive have won 12.4% of 2,901 runs since Mar 2022 (360 horses), Flat and jumps together. Strongest on good to firm going: 17.2% from 425. Strongest at trips under 6f (all codes): 16.2% from 580. Weakest over 1m2f – 1m4f (all codes): 4.7% from 190.
Who are Yellowstone Lake's siblings?
Out of Eiriamach Na Casca (IRE), Yellowstone Lake (FR) has 4 other produce in our archive, 2 of them winners. Most wins: Belafonte (FR) (3). Highest grade won: Class 4 (Extraordinaire (FR)). The wins came over 1m–1m2½f. As at Nov 2026.

Record shown from July 2025. Our archive holds racing in Great Britain, Ireland and France from January 2005. Any runs before that, or in other countries, are not in it. In-running comments are available from 2024 onward.