C25K

C25K is an online resource dedicated to helping beginners move from inactivity to running. Its central offering is the Couch to 5K program, a gradual nine-week plan that alternates walking and running before building toward 5 kilometres or 30 minutes of continuous running. The site presents the program as an accessible introduction to exercise and encourages visitors to seek medical advice before starting.

Created to bring useful beginner-running information together, C25K collects guidance, plans and links for new runners. Resources include the standard Couch to 5K plan, a metric version using metres and kilometres, a treadmill adaptation and Pooch to 5K, a 12-week option for people who want to train with their dogs. The site also points readers to running books and information about getting started, and provides versions of the plan in many languages.

For those continuing beyond the program, C25K shares links to additional running resources and gear categories, including shoes, watches, clothing, headphones and other equipment.