The size of the paddock that is right for your horse will depend on a number of factors, including the horse’s size, age, and level of activity, as well as the climate and grass conditions in the area. A small paddock the size of a generous box stall (16 x 16 feet) could be adequate for some horses with physical ailments or age related issues.

As a general rule for daily turn out, is to allow approximately 300–400 square feet per horse but a larger area that allows for running and playing might be 20–30 feet wide by as much as 100 feet long. Footing is a crucial part of a paddock 

For a horse on 24/7 turnout a paddock should be at least 1-2 acres in size for a single horse, you can divide this up into sections and rotate your horse throughout the year. It’s also important to provide your horse with access to shelter, such as a run-in shed or tree, to protect them from the elements.

If you have any concerns about the size of your paddock or the care of your horse, it’s a good idea to consult with a veterinarian or an equine specialist.