Bulgaria - Yugoslavia
1. Kalotina/Tsaribrod (Dimitrovgrad) - apx. 65 km NW of Sofia - Primary Motorway E80
2. Strezimirovtsi - apx. 70 km NW of Pernik - Secondary Highway 63
3. Vrushka Chuka - apx. 45 km SW of Vidin - Secondary Highway 14
4. Bregovo/Negotin - apx. 35 km NW of Vidin - Secondary Highway 12
5. Kyustendil/Bosilegrad - apx. 30 km NW of Kyustendil
6. Salash/Novo Korito - apx. 30 km W of Belogradchik - local road (not official)

Bulgaria - Macedonia
1. Gyueshevo/Kriva Palanka - apx. 25 km SW of Kyustendil - Primary Motorway E871
2. Stanke Lisichkovo/Delchevo via Zvegor - apx. 20 km W of Blagoevgrad - local road
3. Zlatarevo/Stumitsa via Novo Celo - apx. 25 km W of Petrich - local road

Bulgaria - Greece
1. Kulata/Sidirokastro (Valovishta) - apx. 190 km S of Sofia - Primary Motorway E79
2. Svilengrad/Ormenion - near Bulgarian/Greek/Turkish intersection - Motorway E80/A1
3. Sadovo/Kato Nevrokopion - apx. 20 km. S of Gotse Delchev - local road
4. Makaza - apx. 60 km S of Kurdjali - local road (under construction)

Bulgaria - Turkey
1. Kapitan Andrayvo/Edirne - apx. 10 km. SE of Svilengrad - Primary Motorway E80/A1
2. Malko Turnovo - apx. 90 km. S of Bourgas - Secondary Highway 98 and Primary Motorway E87

Bulgaria - Romania
1. Vidin/Kalafat - in NW Bulgaria - Primary Highway E79
2. Oryahovo/Becket - apx. 75 km. NW of Vratsa - Secondary Highway 15
3. Rusei/Giourgiou - apx. 100 km NE of Veliko Turnovo - Primary Motorway E85
4. Tutrakan/Otelnitsa - apx. 110 km. NW of Shumen - Secondary Highway 49 (not official)
5. Silistra/Kulurash - apx. 105 km. N of Shumen - Primary Motorway 7
6. Yovkovo/Negru Voda - apx. 40 km. NE of Dobrich - Secondary Highway 29
7. Durankulak/Mangalia - apx. 95 km. NE of Varna - Primary Motorway 87