BackgroundThere is compelling support for implementing prehabilitation to optimize perioperative risk factors and to improve postoperative outcomes. However, there is limited evidence studying the application of multimodal prehabilitation for patients with breast cancer.ObjectiveTo determine the feasibility of multimodal prehabilitation as part of the breast cancer treatment pathway.DesignThis was a prospective, cohort observational study. Breast cancer patients undergoing surgery were recruited. They were assigned to an intervention or control group according to patient preference.SettingUK prehabilitation center.ParticipantsA total of 75 patients were referred during the study period. Forty eight patients (64%) did not participate; 20 of those opted to be in the control group. Twenty four patients engaged with prehabilitation and returned completed questionnaires. In total, 44 patients were included in the analysis.InterventionsThe program consisted of supervised exercise, nutritional advice, smoking cessation, and psychosocial support.Outcome MeasuresFeasibility was determined by the center's ability to deliver the program. This was measured by the number of patients who wanted to access the service, compared with those able to. Service uptake, patient satisfaction, and project costs were recorded. Patient‐reported outcomes (PROs) and the use of healthcare resources were also evaluated.ResultsA total of 61 patients (81%) wanted to participate; 24 (32%) were able to partake and return questionnaires. Reasons for nonparticipation included surgery within weeks, full‐time commitments, and transportation difficulties. A total of 25 (93%) prehabilitation patients recorded high satisfaction with the program. There was a significant reduction in anxiety among prehabilitation patients. There were no significant improvements in the other PROs. There were no changes to hospital length of stay, readmissions, and complications.ConclusionsMultimodal prehabilitation is a feasible intervention. Logistical challenges need to be addressed to improve engagement. These results are limited and would require a larger sample to confirm the findings. Work on a thorough cost‐benefit analysis is also required.