In the Kaibab National Forest, this 15 mile mountain bike loop conbines two segments: FS747 & FS147. This maybe the wildest section of the KNF. The smooth dirt track is narrow and winding. From Williams -> US40 east -> Exit 167 -> FS141 south 8 mi. -> FS109 south 2 mi. -> FS 14 -> park at intersection.
Overall, Sunflower Flat Loop is the 77th most popular mountain bike trail of all 103 mountain biking rides in Arizona.