Most Galway people take their walks on the Prom in Salthill.  From the city centre you get the bus at the bottom of Eyre square (outside an AIB Bank).  The bus takes 10 minutes max.  Salthill has a beach and everyone walks the promenade of it until you get to the end.  The local custom is the kick the wall at the end before you turn around for your walk back.

Walking - Connemara guided walking tours (Clifden), Connemara walking & Cycling centre (Clifden), Killary Tours (Leenane), Galway National park (letterfrack), Coole Park (Gort)