The present paper discusses the role of linear systems of foot penetration in recreational use of urban ecosystems from the point of view of their usefulness as corridors linking a municipality with its suburban zone. A method is proposed for defining penetration accessibility of suburban zones based on concentric zones surrounding municipal centres. Also, zones have been identified which are subjected to the most intensive anthropopressure resulting from recreational penetration of the natural environment of recreational areas. Moreover, attention has been focused on the influence of recreational flows on the functioning and use of suburban zones, i.e. areas of conflict between ecological and recreational functions.