4 Day Santa Cruz Trek Cordillera Blanca - Huaraz. This is one the most popular treks in the region due to its relatively short duration, moderate difficulty (many treks are 7 days or more in this area) but still providing incredible stunning views of the Cordillera Blanca mountain range. English speaking guide and quality equipment make this a fantastic option for those both short on time or wanting to acclimatize prior to a climb.