How big is a dressage arena, and what are the letters for?
Officials' detail · The test · 1 of 2The arena is a flat rectangle 60 metres long and 20 metres wide, mostly of sand, inside a low white fence. Letters on boards round the outside mark fixed points, and each movement of a test starts or ends at one. The rider enters at A, and the chief judge sits at C at the far end.
How it works
- Size: "sixty meters (60 m) long and twenty meters (20 m) wide", flat and level.
- Surface: predominantly sand.
- The fence: a low white fence about 30 centimetres high, with rails that are not solid and contain no metal.
- The gate at A: removable and at least 2 metres wide. It is kept closed during each performance.
- The public: kept at least 10 metres from the arena.
- Letters: placed outside the fence about 50 centimetres from it, with a marker on the fence level with each one.
- Three judges at the short end: at C on the centre line, and at M and H near the corners.
- Two side judges: at B and E, the middle of each long side.
- Seven judges: the two extra sit at the opposite short side.
- The huts: each judge has a separate hut or platform raised at least 50 centimetres.
- A pause: about ten minutes after every six to ten riders so the surface can be repaired.
The glossary has the arena, the dressage arena letters entry, the judges and the test.
Tricky cases
Do the letters spell anything or follow the alphabet?
No. The rules name the letters and their positions and give no explanation for the order.
Can the horse step over the fence and come back?
It depends on how far. A horse leaving the arena completely, with all four feet, during the test is eliminated.
Do all the judges sit together?
No. They are placed round the arena, at the short end and at the sides, each in a separate hut.
Is a smaller arena ever used?
Not under the international rule read, which gives only the 60 by 20 metre arena. Smaller arenas are used in eventing and at national level under other rules.
Why the rule exists
A test is written as a list of places: trot from here, turn there. The letters make those places the same in every arena in the world, so a test learnt at home is the test ridden at a championship. Judges on different sides see different faults, which is why they are spread round the arena.
Where it differs
| Where | What changes | Source |
|---|---|---|
| Olympic Games and senior championships | Seven judges | FEI Dressage 441.2 |
| Other international competitions | Three to seven judges | FEI Dressage 441.1 |
| Indoors | The arena should be at least 2 metres from the wall | FEI Dressage 411.3 |
From the rule book
Fédération Équestre Internationale, Dressage Rules 2026, articles 411, 424.5.4 and 441. Checked 14 October 2026. Official document: FEI Dressage Rules 2026 (PDF).