Physical activity and social connections are both important for health and well-being as we age. But physical activity levels tend to decline with age, and social isolation has been identified as a top concern for many older adults. Our research is examining both how social support can enable people to maintain an active lifestyle as they age, and how physical activity contexts can be a source of social connection. Current projects include systematic reviews of both the quantitative and qualitative literature on the association between social support and physical activity for older adults. In another project, we are examining how various social support concepts predict physical activity among older adults in Canada using data from the Canadian Longitudinal Study on Aging. We are also conducting a qualitative investigation of supportive behaviours that older adults experience as enabling physical activity, with a sub-study focused on the social needs and barriers of older adults living alone. We work closely with The City of Calgary on many of our projects on aging and physical activity, including a study examining assessing social outcomes in physical activity programming for older adults, and how physical activity contributes to age-friendly communities.