Another of the great rides in the rolling hill country of the western Etla valley, this particular loop is certainly one of the most intimidating, as the climb up through San Cristobal is steep and unrelenting. If you want even more pain, continue up the mountain to Cuatro Venados before reversing direction for a screamer of a downhill run. Your legs and lungs are guaranteed a real workout! Just be careful to moderate your speed coming down or you may wipe out in the loose scrabble of the dirt roadway.