
Sam We don't realise how lucky we are being able to excersise our dogs in most public parks. The person with the query is most likely based in USA, where many have to trravel quite a distance to these Dog Parks, and there is often a fee for using them!
Here in UK we are allowed to take our dogs in most country Parks, Common Land, and recreation Grounds, with the proviso that we clean up after our dogs. On lead restrictions only seem to apply in ornmamental flower gardens etc. :D
Where I live (Bristol) I have the choice of 3 recreation Grounds, the Bristol to Bath old Railway line (which is now a footpath/cycle Path, which I no longer find practical with four dogs, as few cyclists use bells, not giving a chance to round the dogs up), a Big Country Park, and a large City Park that you can get to just by crossing a main road from the country park. If I want it means I can take my dogs for a 3 -4 hour walk without retracing my steps more than the once pn the return journey.
A lot of people in the country have very few places to excersise dogs unless they have their own land, as after all all that lovely green an pleasant land is someones workplace and living, and not recreational land.