| Southborough to Rovinj | 744.18 mi (1,197.64 km) |
| Southborough to Samobor | 796.56 mi (1,281.93 km) |
| Southborough to Sesvete | 811.47 mi (1,305.94 km) |
| Southborough to Sibenik | 889.40 mi (1,431.35 km) |
| Southborough to Sinj | 919.27 mi (1,479.42 km) |
| Southborough to Sisak | 835.05 mi (1,343.88 km) |
| Southborough to Slatina | 880.94 mi (1,417.74 km) |
| Southborough to Slavonski Brod | 913.71 mi (1,470.48 km) |
| Southborough to Solin | 921.47 mi (1,482.97 km) |
| Southborough to Split | 920.37 mi (1,481.19 km) |
| Southborough to Sveti Ivan Zelina | 811.92 mi (1,306.66 km) |
| Southborough to Trilj | 926.16 mi (1,490.50 km) |
| Southborough to Trogir | 912.90 mi (1,469.18 km) |
| Southborough to Umag | 724.69 mi (1,166.28 km) |
| Southborough to Valpovo | 911.71 mi (1,467.25 km) |
