Photowalking is the act of walking with a camera for the main purpose of taking pictures of things that the photographer may find interesting.
It is often a communal activity organised by camera clubs, online forums or commercial organisations, sometimes in the form of a walking tour. Often the aim is to practice and improve one's own photography skills rather than a specific focus on documentary photography.
While the camera need not be a digital camera, in practice the low cost of digital photography and the ease of digital photo processing and online photo sharing allow a casual approach in photowalking.
While related to street photography, photowalking is differentiated by its impetus to photograph things of interest rather than people specifically. As with any walking that may go a few miles or kilometers, photowalking can also promote physical fitness.