The truces between the reigns of Grenade and Castile served to balance and weigh the complex relations on the border from the 13th to the 15th centuries. They were an effective method to cease hostilities, and varied greatly in length. Eventually they imposed a certain rhythm on the way of life in the frontier, and worked as a common solution to avoid and offset the violence that characterized this area. By studying and analyzing their progression and features, it is possible to establish a brief characterisation and a possible periodisation for these truces over a long period of time. This helps us to understand the complexities that typified the border area.