Purpose Cancer patient survival rates are rapidly growing, and further data are needed on the impact of the disease beyond diagnosis and treatment phases. The aims of this study were to analyze the prevalence and sociodemographic and medical risk factors of clinical distress. Additionally, we also explore the relationship between unmet psychosocial needs and both clinical distress and subgroups of survival periods. Methods A cross-sectional study of 450 women who at least 1 month before had completed the primary treatment for breast cancer was conducted. The Brief Symptom Inventory 18 and the Cancer Survivors Unmet Needs measure were used. Results One in four women showed clinical distress related to unmet psychosocial needs. None of the sociodemographic and medical predictors was associated with clinical distress. Needs focused on the possibility of recurrence and its cognitive-emotional impact were the most frequent. Needs tended to decrease through periods of survival; however, there was a considerable level of unmet needs even among long-term survivors. Conclusions The findings highlight the relevance of extending psychosocial care beyond the breast cancer primary medical treatment. Early and regular screen for distress and unmet supportive needs permits to identify high-risk groups that likely benefit from targeted preventive interventions.