Parkrun is a free, weekly running event that takes place in parks around the world. Participants can choose to run, jog, or walk a distance of 5 kilometers. The events are open to everyone, regardless of age or fitness level, and are organized by local volunteers. Each Parkrun is timed, allowing participants to track their progress over time. Registration is required, and participants receive a unique barcode to record their finishing times. The community aspect encourages social interaction, making it a popular choice for those looking to stay active and meet new people.