ERAS (Enhanced Recovery After Surgery) protocol is a multimodal perioperative care pathways designed to achieve early recovery after surgical procedures by maintaining preoperative organ function and reducing the profound stress response following surgery. Even if efficacy and safety of ERAS protocol in colorectal surgery is well-established in the literature, its implementation is limited to few selected centres in Piemonte. The aim of the study is to extend the implementation of the ERAS protocol to whole regional network of hospitals. Specific objectives are to estimate its impact on different dimensions of quality of care, including length of stay, complications and patient satisfaction, and to identify possible barriers or facilitating factors.