| Campbell to Popovo | 6,519.10 mi (10,491.48 km) |
| Campbell to Provadia | 6,554.56 mi (10,548.55 km) |
| Campbell to Radnevo | 6,578.42 mi (10,586.95 km) |
| Campbell to Radomir | 6,495.71 mi (10,453.84 km) |
| Campbell to Rakitovo | 6,556.84 mi (10,552.22 km) |
| Campbell to Rakovski | 6,557.86 mi (10,553.86 km) |
| Campbell to Razgrad | 6,513.56 mi (10,482.56 km) |
| Campbell to Razlog | 6,548.76 mi (10,539.22 km) |
| Campbell to Ruse | 6,483.56 mi (10,434.29 km) |
| Campbell to Samokov | 6,522.86 mi (10,497.53 km) |
| Campbell to Sandanski | 6,563.85 mi (10,563.49 km) |
| Campbell to Sevlievo | 6,515.26 mi (10,485.30 km) |
| Campbell to Shumen | 6,537.95 mi (10,521.81 km) |
| Campbell to Silistra | 6,492.11 mi (10,448.05 km) |
| Campbell to Sliven | 6,563.02 mi (10,562.16 km) |
