| Monticello Conte Otto to Octeville | 674.76 mi (1,085.92 km) |
| Monticello Conte Otto to Oignies | 519.68 mi (836.35 km) |
| Monticello Conte Otto to Oissel | 553.36 mi (890.55 km) |
| Monticello Conte Otto to Olivet | 484.09 mi (779.08 km) |
| Monticello Conte Otto to Ollioules | 330.30 mi (531.56 km) |
| Monticello Conte Otto to Olonne-sur-Mer | 642.73 mi (1,034.38 km) |
| Monticello Conte Otto to Oloron-Sainte-Marie | 623.63 mi (1,003.63 km) |
| Monticello Conte Otto to Onet Village | 447.28 mi (719.83 km) |
| Monticello Conte Otto to Onnaing | 495.24 mi (797.01 km) |
| Monticello Conte Otto to Orange | 346.60 mi (557.79 km) |
| Monticello Conte Otto to Orchies | 511.17 mi (822.65 km) |
| Monticello Conte Otto to Orleans | 484.43 mi (779.61 km) |
| Monticello Conte Otto to Orly | 482.81 mi (777.00 km) |
| Monticello Conte Otto to Ormesson-sur-Marne | 477.90 mi (769.11 km) |
| Monticello Conte Otto to Orsay | 490.21 mi (788.91 km) |
