By Chris Rourke Some are snowy and silent. Others are rough and rocky. Still, some lead users on a narrow strip through a field of wildflowers billowing in the summer breeze. Trails are all shapes and sizes and have many uses. And we “users” are as varied as the trails we find under our feet or wheels. There is the avid mountain biker, looking to blow off steam after work. And trail runners? They are out to decrease their times before the next epic competition. Nordic skiers weather cold winters by getting out in the sun and quietly swooshing across ...