| Sint-Gillis-Waas to Oria | 982.40 mi (1,581.02 km) |
| Sint-Gillis-Waas to Oristano | 810.54 mi (1,304.44 km) |
| Sint-Gillis-Waas to Orta Nova | 877.14 mi (1,411.63 km) |
| Sint-Gillis-Waas to Orte | 719.26 mi (1,157.54 km) |
| Sint-Gillis-Waas to Ortona | 780.77 mi (1,256.53 km) |
| Sint-Gillis-Waas to Orvieto | 696.82 mi (1,121.42 km) |
| Sint-Gillis-Waas to Orzinuovi | 482.33 mi (776.24 km) |
| Sint-Gillis-Waas to Osimo | 690.07 mi (1,110.57 km) |
| Sint-Gillis-Waas to Ospitaletto | 476.85 mi (767.41 km) |
| Sint-Gillis-Waas to Ostuni | 967.93 mi (1,557.73 km) |
| Sint-Gillis-Waas to Ottaviano | 869.96 mi (1,400.07 km) |
| Sint-Gillis-Waas to Ovada | 500.27 mi (805.11 km) |
| Sint-Gillis-Waas to Ozieri | 770.80 mi (1,240.49 km) |
| Sint-Gillis-Waas to Paceco | 1,002.49 mi (1,613.35 km) |
| Sint-Gillis-Waas to Pachino | 1,138.22 mi (1,831.78 km) |
