There isn't enough room in a mile long track for many cats to hit their top speeds, most take two or three. It takes a while to air them out. If dave scott had enough room he may hit 220, from what I am told. I only topped out at 104 in a mile, in that same day I ran 111 in about one and a half miles. Callan has done some amazing work to hit 203 in a standing start mile!