| Somma Lombardo to Popovo | 876.86 mi (1,411.17 km) |
| Somma Lombardo to Provadia | 937.98 mi (1,509.53 km) |
| Somma Lombardo to Radnevo | 886.00 mi (1,425.88 km) |
| Somma Lombardo to Radomir | 738.09 mi (1,187.85 km) |
| Somma Lombardo to Rakitovo | 806.69 mi (1,298.24 km) |
| Somma Lombardo to Rakovski | 840.25 mi (1,352.26 km) |
| Somma Lombardo to Razgrad | 886.97 mi (1,427.44 km) |
| Somma Lombardo to Razlog | 780.60 mi (1,256.25 km) |
| Somma Lombardo to Ruse | 854.57 mi (1,375.29 km) |
| Somma Lombardo to Samokov | 772.23 mi (1,242.79 km) |
| Somma Lombardo to Sandanski | 781.36 mi (1,257.48 km) |
| Somma Lombardo to Sevlievo | 829.81 mi (1,335.45 km) |
| Somma Lombardo to Shumen | 911.89 mi (1,467.54 km) |
| Somma Lombardo to Silistra | 912.72 mi (1,468.88 km) |
| Somma Lombardo to Sliven | 895.93 mi (1,441.86 km) |
