• PATIENTS INCLUSION:

• Adults (18 years of age or older)

• Diagnosis of stage I-III colon or rectal cancer

• Undergone curative-intent complete surgical resection (patients who have received non-operative management for rectal cancer may be eligible)

• Completed treatment (i.e., neo-adjuvant, adjuvant cytotoxic chemotherapy, radiation, or surgical resection) at least six months prior

• Own a smartphone with internet access and can receive text messages

• Able to speak, read, and understand English

• Self-report ability to independently engage in physical activity determined by the Physical Activity Readiness questionnaire (PAR-Q), and if indicated obtain physician clearance

• Eastern Cooperative Oncology Group (ECOG) performance status of 0-2 determined via medical chart review

• Presence of a family caregiver (i.e., informal or formal caregiver) willing support the patient and participate in the study

• Able to provide informed consent

• FAMILY CAREGIVER INCLUSION:

• Any adult that resides in the same household as the patient

• Willing to participate in all aspects of the intervention and in the assessments required for those in the wait-list control condition if applicable

• Meets the patient inclusion criteria number 1, 5, 6, and 10

• SMES INCLUSION:

• Medical, radiation, and surgical oncologists; advanced practice providers, registered nurses; dietitians; exercise physiologists; physical therapists, patient navigators and champions/advocates, and social workers with at least 12 months of experience working with CRC survivors