Tourism is the most important sector in the park and has the largest potential to be a source for sustainable income. Rila Monastery Nature park is the second most visited nature park in Bulgaria after Vitosha, which is situated next to the nation's capital Sofia. Around 96% of all adult Bulgarians have visited the Rila Monastery at least once; of them 60% have come more than twice. In 2008 the park was visited by 1,002,204 people. Of them, approximately 1/3 are foreign citizens. More than 2/3 of the visitors come to the park for a one-day trip without staying overnight. Around 90% of all tourists visit the monastery. Half of the tourists arrive in two of the summer months, July and August. More than 2/3 arrive by car via the III-107 third class road, the park's only highway access; the rest come by foot from Rila National Park.