Inclusion Criteria:  Scheduled surgery due to colorectal cancer or liver metastases from colorectal cancer Age ≥65 A maximal walking speed below 2 meters per second Understands and speaks the Swedish language  Exclusion Criteria:  Planned hyperthermic intraperitoneal chemotherapy (HIPEC) procedure or flap surgery Health conditions that prevent participation in assessment or exercise. Such conditions include, but are not limited to, unstable heart disease, severe systematic illness or orthopaedic conditions that may prohibit exercise. The need for surgery within 2 weeks Permanent wheelchair user Residence outside of Stockholm County