| Herstal to Oignies | 116.64 mi (187.71 km) |
| Herstal to Oissel | 221.45 mi (356.38 km) |
| Herstal to Olivet | 256.50 mi (412.80 km) |
| Herstal to Ollioules | 520.18 mi (837.15 km) |
| Herstal to Olonne-sur-Mer | 442.30 mi (711.81 km) |
| Herstal to Oloron-Sainte-Marie | 593.85 mi (955.71 km) |
| Herstal to Onet Village | 457.78 mi (736.73 km) |
| Herstal to Onnaing | 91.44 mi (147.16 km) |
| Herstal to Orange | 452.70 mi (728.55 km) |
| Herstal to Orchies | 105.67 mi (170.06 km) |
| Herstal to Orleans | 254.20 mi (409.10 km) |
| Herstal to Orly | 196.48 mi (316.20 km) |
| Herstal to Ormesson-sur-Marne | 189.70 mi (305.30 km) |
| Herstal to Orsay | 205.46 mi (330.66 km) |
| Herstal to Orthez | 579.85 mi (933.18 km) |
