| Straelen to Octeville | 369.25 mi (594.25 km) |
| Straelen to Oignies | 157.72 mi (253.83 km) |
| Straelen to Oissel | 270.41 mi (435.19 km) |
| Straelen to Olivet | 315.37 mi (507.53 km) |
| Straelen to Ollioules | 574.54 mi (924.63 km) |
| Straelen to Olonne-sur-Mer | 497.58 mi (800.78 km) |
| Straelen to Oloron-Sainte-Marie | 654.32 mi (1,053.03 km) |
| Straelen to Onet Village | 518.03 mi (833.69 km) |
| Straelen to Onnaing | 137.46 mi (221.21 km) |
| Straelen to Orange | 509.67 mi (820.23 km) |
| Straelen to Orchies | 147.77 mi (237.82 km) |
| Straelen to Orleans | 312.99 mi (503.72 km) |
| Straelen to Orly | 253.78 mi (408.42 km) |
| Straelen to Ormesson-sur-Marne | 247.26 mi (397.93 km) |
| Straelen to Orsay | 262.36 mi (422.22 km) |
