80-120km from the capital city Bucharest,Prahova Valley is one of the most sought of destination by tourists ,both Romanian and foreighn.At the hills of the Bucegi Mountains,it has three major ski resorts,Sinaia,Busteni and Azuga.Here,both in winter and summer,you will find a lot of people who come to enjoy the peace and serenity that nature has to offer.In summer,from these resorts you can choose a multitude of trails in the forests of the Bucegi Natural Park,cabble cart rides that go all the way up to the top of the mountains,go mountain biking on properly built trails,or,for the more experienced,rock climbing on all difficulty routes.
Below there's a link to the valley map ,with all its cities and acces ways:http://amfostacolo.ro/harta-romania__15/valea-prahovei__97/