| Monte Porzio Catone to Popovo | 694.95 mi (1,118.41 km) |
| Monte Porzio Catone to Provadia | 754.60 mi (1,214.41 km) |
| Monte Porzio Catone to Radnevo | 678.14 mi (1,091.36 km) |
| Monte Porzio Catone to Radomir | 526.04 mi (846.59 km) |
| Monte Porzio Catone to Rakitovo | 584.23 mi (940.23 km) |
| Monte Porzio Catone to Rakovski | 628.71 mi (1,011.81 km) |
| Monte Porzio Catone to Razgrad | 710.12 mi (1,142.82 km) |
| Monte Porzio Catone to Razlog | 552.93 mi (889.85 km) |
| Monte Porzio Catone to Ruse | 684.23 mi (1,101.16 km) |
| Monte Porzio Catone to Samokov | 556.64 mi (895.82 km) |
| Monte Porzio Catone to Sandanski | 545.05 mi (877.17 km) |
| Monte Porzio Catone to Sevlievo | 637.18 mi (1,025.45 km) |
| Monte Porzio Catone to Shumen | 729.78 mi (1,174.46 km) |
| Monte Porzio Catone to Silistra | 751.23 mi (1,208.99 km) |
| Monte Porzio Catone to Sliven | 698.22 mi (1,123.67 km) |
