Following the need to promote physical activity as a part of a healthy lifestyle, in this study we focus on encouraging more physical activity by improving the experience, with running as an example of a popular outdoor activity. Running in nature is often described as more pleasant and relaxing than running in the city, yet in urban environments it is difcult to integrate true nature in one's running route. To bridge this gap we designed Sensation, a sonifed running track that provides sensations of nature using audio feedback. Sensation senses the footsteps of runners and produces synced sounds of footsteps in several nature environments to augment the urban landscape. This way, Sensation aims to enhance the environmental factors that contribute to the positive feelings people experience during a run. We report on insights gathered during our Research-through-Design process, as well as a preliminary user test of this sonifed running track.