Young riders who want to get into competitive sport quickly run into the category system: Ponies, Children, Juniors, Young Riders, and U25. Which category applies to you depends on your age in the current calendar year, and partly on the discipline. Here's how the system broadly works.
Why Categories Exist
The youth categories exist so riders compete against others their own age, and so the difficulty of tests and courses grows along with experience and physical development. A twelve-year-old on a pony and a twenty-year-old on a full-size horse don't ride in the same class; the categories keep those worlds separate.
Important to remember: the cutoff is determined by your age within the calendar year, not by your birthday on the day of the competition. If you have a birthday partway through the year, you count for the whole season in the category that matches your age at the end of that year. If you're right on a boundary, check the current regulations.
The Categories in Broad Strokes
The ages below are the common guideline values as used internationally (by the FEI, the international equestrian federation) and by the KNHS (the Dutch equestrian federation). They give you the order of magnitude; the exact limits and any transition arrangements differ by discipline and can change from year to year.
| Category | Age (Guideline) | Horse or Pony |
|---|---|---|
| Ponies (FEI, international) | from the year you turn 12 through the year you turn 16 | pony (up to about 148 cm at the withers) |
| Ponies (KNHS, national) | through the year you turn 18 | pony (KNHS categories A through E, up to 156.9 cm) |
| Children | roughly 12–14 years old | horse |
| Juniors | roughly 14–18 years old | horse |
| Young Riders | roughly 16–21 years old | horse |
| U25 | up to 25 years old | horse |
A few things stand out in this table. The categories overlap deliberately: a sixteen-year-old can often compete in either Juniors or Young Riders, depending on level and choice. And the line between pony and horse runs along the animal's height at the withers, not just the rider's age. Internationally, an animal up to about 148 cm counts as a pony; nationally, the KNHS's E category also includes ponies up to 156.9 cm, so a 155 cm pony simply competes with the ponies in the Netherlands.
Ponies and Children: The Entry Point
The youngest competition riders usually ride in the Ponies category. Here it's all about the child-and-pony combination, with tests and courses sized and scaled in difficulty to suit that age. The pony's height at the withers helps determine which pony class you fall into; within the Ponies category there are often further subdivisions by height.
The Children category is a separate class, mainly used internationally, for riders who already ride a full-size horse but are still too young for Juniors. Not every discipline has an active Children class, and at national level the offering is more limited than internationally. For many children, the route is therefore: ponies first, then straight on to Juniors on a horse.
Juniors, Young Riders, and U25
This is what most questions are about, because Juniors and Young Riders overlap in age.
- Juniors — the first horse category after ponies, roughly for ages 14 to 18. The level of the tests and courses is higher than for ponies, but below that of Young Riders.
- Young Riders — the step above that, roughly 16 to 21 years old. Tougher tests and higher courses; for many young riders, the last real youth category before moving up to the seniors.
- U25 — an intermediate step that mainly exists in dressage. U25 ("under 25") lets riders up to age 25 compete at the highest level (Grand Prix) without immediately having to ride fully against the established seniors. Show jumping and eventing now also have an official FEI U25 category (from the year you turn 16 through the year you turn 25); eventing even has its own FEI U25 World Championship.
Which of these categories is open to you therefore depends on your age, your discipline, and the level you can handle.
Which Category Do You Fall Into?
A practical way to work it out:
- Pony or horse? If you ride a pony (nationally, up to and including the E category at 156.9 cm; internationally, up to about 148 cm), you fall into the Ponies category. If you ride a horse, move on to step 2.
- How old are you this calendar year? Count your age at the end of the current year, not the competition date.
- Which discipline? The available categories differ between dressage, show jumping, and eventing — U25 is mainly a dressage category, and Children isn't active everywhere.
- What level can you handle? Where categories overlap (such as Juniors and Young Riders), your riding level is often the deciding factor.
If you're right on a boundary, or unsure about the combination of age and discipline, the regulations are the deciding factor. The exact age limits, transition rules, and which classes are being ridden this season are set out in the current competition regulations.
In Short
Youth sport builds up in steps: Ponies for the youngest, Children as a separate international horse class, then Juniors, Young Riders, and — mainly in dressage — U25 as a bridge to the seniors. Age determines the main division, height at the withers determines pony versus horse, and where there's overlap, your level decides.
Because the precise limits differ by discipline and are periodically adjusted, always check your category for the new season in the official regulations of the KNHS (national) or the FEI (international). Your club or instructor can help you choose the right class.
Sources (verified September 2, 2026): KNHS — Up to what age can you keep competing with ponies? · KNHS — Pony measuring · FEI Regulations 2026 via fei.org
See also: KNHS Youth Team Entry Criteria · Dutch Competition Classes Explained · Level: Talent Pathway