Sutjeska National Park is Maglić, Perućica and the Zelengora ridges. Bosnia's highest peak sits on the Montenegro line. This is wilderness with a park ticket, not a city forest. You'll hike for hours, watch the weather, and sleep nearby if you have any sense.
High point, old forest, long days
Maglić is a mountain day with remaining snow well into the season. Perućica is restricted old forest. You don't freelance through it. Zelengora is a ridgeline option when Maglić is the wrong call. Hiking here is the sport. Rafting the Tara is next door in Foča, not inside this valley.
Stay east
Open the Book here tab for guided park days in Sutjeska, Tara and the east. Bring layers. The valley and the summit are different climates.