My research explores the predictors of and relationships among loneliness, types of social isolation (SI) and physical activity (PA) in rurally-living older adults in the UK using interdisciplinary, sequential mixed-methods. I focus on loneliness and SI because strong evidence shows an association with poor health in older age. Similarly, engaging in PA leads to prolonged healthy ageing. My experience in teaching older adult fitness classes also adds to my interest in this topic. I focus on rural areas because I think that the quiet, rural way of life in the UK countryside should be supported for those who cherish it.