There are five entrances with different hours of opening. The main attractions of Skradinski Buk and Roski Slap are open all year round.
March and October 16th until 31st 9am until 5pm
April and October 1st to 15th 8am until 6pm
May and September 8am until 7pm
June, July and August 8am until 8pm
November until February 9am until 4pm
The park is closed on the 25th and 26th of December
The park closes at midday on the 24th and 31st of December
On the 1st of January only the Lozovac entrance is open.
More information is available at http://www.npkrka.hr/stranice/working-hours/144/en.html
From Zagreb- it is about 300km and takes about 3 hours by car using the E71. The journey by bus takes four hours with several buses each day in the summer, only one daily service in the winter months.
From Split- the distance of this route is about 90 kilometres and one hour by car with several route options. The journey by bus takes about 90 minutes with several options in the summer and only three buses per day during the winter.
From Dubrovnik- the 3 hour journey by car includes using the toll route to cover the 280km route. This journey by bus will take about 6 hours.