A to Z - Inches

I wonder what it'd be like to be a racehorse?

Sweat lathers his neck as he races forward, heart pounding.  He hears them hot on his heels, nostrils flare as he sucks oxygen deep into his lungs.  His legs screaming as he careens around the corner.  Tunnel vision only allows him to see the finish line.   Energy wanes and he snorts, frustrated.  Off to his right he hears his competition, gaining.  The end is in sight.  He stretches his neck, wins by a nose…mere inches.