The present invention relates to a sock with integrated biometric monitoring. The invention includes a biometric sensor system integrated into a sock with the ability to process and store the biometric data collected in order to provide useful information to the user, relating the users biometric data to performance parameters of physical effort. The invention includes sensing integrated, on suitable supports (2), in the textile structure of the sock including temperature (1), heart beating and blood pressure (5) exerted by the foot of its user, to a processor (10, 11), signaling means (13) and interaction (14), to be interpreted and sent (12) to a mobile device (15) that stores data and allows the visualization of data. The invention includes textile integration of biometric monitoring devices through conductive yarns (3, 4, 6, 7) knitted with own sock and their connections to sensors, terminals (8, 9) and encapsulations.