Whoah. No. Way to small. I did a lot of research once about stalling horses, and found a rough estimate for a 12x12 stall for a horse would be about 8x8 feet for the average person. So, that means a exercise area smaller than 8x16. Imagine that plus some controlled exercise a few times a week. I would say the smallest with riding a few times a week would be 25x75. My little run for temporary winter confinement is 25x110.