| Herzogenrath to Octeville | 352.50 mi (567.29 km) |
| Herzogenrath to Oignies | 138.77 mi (223.33 km) |
| Herzogenrath to Oissel | 245.63 mi (395.30 km) |
| Herzogenrath to Olivet | 280.53 mi (451.47 km) |
| Herzogenrath to Ollioules | 534.04 mi (859.45 km) |
| Herzogenrath to Olonne-sur-Mer | 466.90 mi (751.41 km) |
| Herzogenrath to Oloron-Sainte-Marie | 616.49 mi (992.15 km) |
| Herzogenrath to Onet Village | 477.81 mi (768.96 km) |
| Herzogenrath to Onnaing | 114.54 mi (184.33 km) |
| Herzogenrath to Orange | 468.75 mi (754.38 km) |
| Herzogenrath to Orchies | 127.95 mi (205.91 km) |
| Herzogenrath to Orleans | 278.26 mi (447.82 km) |
| Herzogenrath to Orly | 220.95 mi (355.58 km) |
| Herzogenrath to Ormesson-sur-Marne | 214.14 mi (344.62 km) |
| Herzogenrath to Orsay | 229.98 mi (370.12 km) |
