| Cities | Distance |
|---|---|
| Herstal to Oria | 908.78 mi (1,462.54 km) |
| Herstal to Oristano | 757.12 mi (1,218.47 km) |
| Herstal to Orta Nova | 804.72 mi (1,295.07 km) |
| Herstal to Orte | 650.83 mi (1,047.41 km) |
| Herstal to Ortona | 708.86 mi (1,140.81 km) |
| Herstal to Orvieto | 628.58 mi (1,011.60 km) |
| Herstal to Orzinuovi | 414.42 mi (666.95 km) |
| Herstal to Osimo | 617.96 mi (994.50 km) |
| Herstal to Ospitaletto | 408.09 mi (656.76 km) |
| Herstal to Ostuni | 894.15 mi (1,438.99 km) |
| Herstal to Ottaviano | 799.86 mi (1,287.25 km) |
| Herstal to Ovada | 439.34 mi (707.05 km) |
| Herstal to Ozieri | 715.16 mi (1,150.94 km) |
| Herstal to Paceco | 939.65 mi (1,512.21 km) |
| Herstal to Pachino | 1,071.59 mi (1,724.55 km) |