Social
Can take part regularly-high levels of accessibility by walking , public transport.
For the urban and rural population crowds. Spectators. Cafes , clothing music. Youth culture etc.
Reduced trespass-e.g. by mountain bikers.
Reduced conflict with other users-e.g. public on streets. As in skateboarding, and in National Parks, as in mountain biking
Located off the streets
Time and space zoning