The dataset was collected by 182 users over five years from April 2007 to August 2012, with most of the data created in Beijing, China. Trajectories in the dataset are represented by a series of timestamped points, each containing latitude, longitude, and altitude information. The data set records a wide range of users' outdoor activities, including not only living habits such as going home and going to work, but also entertainment and sports activities such as shopping, dining, and hiking. This dataset can be used in many research areas such as user activity identification, location-based social networks, location privacy, etc.