Group and Graded Races Explained (G1, G2, G3 and Listed)
Group and Graded races are the top tier of thoroughbred racing. They decide championships, they set stallion values, and they are the races that put black type on a sales page. Understanding how the tiers work, and why the same race is called "Group" in one country and "Grade" in another, is basic literacy for anyone reading a pedigree.
The four tiers
Stakes races are ranked in four levels:
- Group 1 or Grade 1. The elite level. Championship races contested by the best horses in a division. Winning one defines a career.
- Group 2 or Grade 2. High quality, often the main preparation races for Group 1 targets, and significant wins in their own right.
- Group 3 or Grade 3. The entry level of the graded programme.
- Listed. The tier immediately below Group or Grade 3. Not graded, but still stakes class, and Listed winners earn black type.
All four are stakes races, and performance in any of them earns black type in a sales catalogue.
Group or Grade? It depends where you are
The two words describe the same concept, and the difference is regional convention rather than substance.
- Group is used across Europe, Australia, New Zealand, Japan, Hong Kong and most of the racing world.
- Grade is used in North America, and also for jumps racing in Britain and Ireland.
A Grade 1 in Kentucky and a Group 1 in Sydney occupy the same position in their respective programmes. In pedigree notation, you will see both, sometimes abbreviated to G1, G2, G3, or written as Gr.1. G1 Goldmine treats them equivalently in analysis while preserving the local naming.
Where the system came from
Before the 1970s, there was no consistent way to compare the importance of races between countries. A buyer looking at a foreign catalogue had no reliable means of judging whether a race name signalled a championship or a modest local feature.
The pattern race system was introduced in Europe in the early 1970s to solve exactly that, formally classifying the best races into tiers so that quality could be read across borders. North America followed with its graded stakes system, and the approach spread. The result is that a pedigree page is now readable internationally, which is fundamental to a global bloodstock market.
Gradings are reviewed, not fixed
A race does not hold its grading permanently. Each jurisdiction's grading body assesses races on a rolling basis, typically by measuring the quality of the fields the race has actually drawn over a period of several years.
A race that consistently attracts high-class runners can be promoted. One whose fields have weakened can be downgraded, or lose its status entirely. New races can be added to the pattern as they establish themselves.
This has a practical consequence for pedigree research. A race that is Group 2 today may have been Group 1 when a horse in the pedigree won it, or the reverse. When you see a historical black-type record, the grading reflects the status at the time, and comparing gradings across decades needs a little care.
Not every valuable race is a graded race
Some of the richest races in the world sit outside the Group and Graded system. Large sales-restricted races and invitation-only events can carry prize money well above a Group 1, but because entry is restricted rather than open on merit, they may not carry graded status and may not confer black type.
This is a regular source of confusion. Prize money measures what a race pays. Grading measures the class of horse it attracts. They correlate, but they are not the same thing, and only the second one appears in bold on a catalogue page.
Why this matters in pedigree analysis
Group and Graded results are the raw material of serious pedigree work, for one reason: they are the most reliable available marker of class, applied consistently across countries and decades.
When G1 Goldmine assesses a cross, it is asking how often that combination of ancestors appears behind horses that reached this level, compared with how often it appears generally. Stakes-level results give a large, internationally comparable dataset of proven performers to measure against.
Within the platform, you will see Group and Graded results used in several places. Stakes winner lists returned by Stallion Match are broken down by Group 1, 2, 3 and Listed. The Aptitude Profile maps at what age and distance those stakes winners actually won. Female Family Tracking counts new stakes winners emerging from a family, which is how a rising female line announces itself before the market has fully priced it.
A note on reading grade counts
A horse described as a "three-time Group 1 winner" has won three Group 1 races, which may all have been the same race in different years. A horse described as a "Group 1 winner" has won at least one. When comparing two pedigrees, look at what was won and where, not only how many times. Depth of programme varies between jurisdictions, and a Group 1 in a major racing nation is a different test to a Group 1 in a developing one.