| Boppard to Octeville | 412.55 mi (663.94 km) |
| Boppard to Oignies | 203.31 mi (327.20 km) |
| Boppard to Oissel | 296.27 mi (476.80 km) |
| Boppard to Olivet | 305.09 mi (491.00 km) |
| Boppard to Ollioules | 496.89 mi (799.67 km) |
| Boppard to Olonne-sur-Mer | 499.27 mi (803.50 km) |
| Boppard to Oloron-Sainte-Marie | 621.50 mi (1,000.21 km) |
| Boppard to Onet Village | 467.82 mi (752.88 km) |
| Boppard to Onnaing | 176.49 mi (284.03 km) |
| Boppard to Orange | 440.70 mi (709.24 km) |
| Boppard to Orchies | 192.33 mi (309.52 km) |
| Boppard to Orleans | 303.27 mi (488.06 km) |
| Boppard to Orly | 254.87 mi (410.17 km) |
| Boppard to Ormesson-sur-Marne | 247.64 mi (398.54 km) |
| Boppard to Orsay | 264.67 mi (425.95 km) |
