Imagine running through the valley of a beautiful Wyoming mountain-scape. Snowy peaks ridging across the sky. Wildflower grasses rustling in the breeze. Domestic horses galloping alongside you on a nearby ranch. Sounds dreamy, right? Sometimes I can’t even believe that I ran a half marathon in Grand Teton National Park! Vacation Races I have a strict rule when it comes to running half marathons: if I’…