PURPOSE: To determine if the effects of exercise-based cancer rehabilitation on physical functioning, activity (including physical activity) and participation (including quality of life) are maintained at 6 to 12 months. METHODS: Electronic databases CINAHL, Embase, MEDLINE, PsycINFO and PubMed were searched from the earliest available time to August 2021. Randomised controlled trials examining the long-term effects (≥ 6 months post-intervention) of exercise-based rehabilitation were eligible for inclusion. Outcome data (e.g. fitness, physical activity, walking capacity, fatigue, depression, quality of life) were extracted and the methodological quality assessed using PEDro. Meta-analyses using standardised mean differences were used to synthesise data and Grades of Recommendation, Assessment, Development and Evaluation criteria were applied. RESULTS: Nineteen randomised controlled trials including 2974 participants were included. Participants who underwent exercise-based rehabilitation had improved physical activity (SMD 0.30, 95% CI 0.09 to 0.51, I CONCLUSION: Health outcomes of cancer survivors after exercise-based rehabilitation can be maintained after rehabilitation completion. IMPLICATIONS FOR CANCER SURVIVORS: Cancer survivors can maintain health benefits achieved through exercise-based rehabilitation.