The Rib Cage is a blast and itâs almost impossible to not get air on this roller coaster of a trail. Stinking Springs Loop . Youâll love it! min-width: 930px; 0:00. Looking for more? min-width: 0; right: 100%; A guidebook and detailed map all in one. Phil's World Trail Sytem, built by and for mountain bikers, offers nearly 60 miles of mind-blowing trail Located outside of Cortez, Phil's World is one of Colorado's most popular mountain biking locations...without the crowds. This is one map available from the Big Loop Maps compete trail map for Cortez, Dolores, Mancos & Rico Colorado. } Rib-knit crewneck collar. Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months.