| Argentan to Oria | 1,034.47 mi (1,664.82 km) |
| Argentan to Oristano | 743.36 mi (1,196.32 km) |
| Argentan to Orta Nova | 920.42 mi (1,481.28 km) |
| Argentan to Orte | 738.91 mi (1,189.16 km) |
| Argentan to Ortona | 823.82 mi (1,325.81 km) |
| Argentan to Orvieto | 716.70 mi (1,153.43 km) |
| Argentan to Orzinuovi | 521.74 mi (839.66 km) |
| Argentan to Osimo | 740.42 mi (1,191.58 km) |
| Argentan to Ospitaletto | 522.43 mi (840.76 km) |
| Argentan to Ostuni | 1,022.29 mi (1,645.22 km) |
| Argentan to Ottaviano | 893.46 mi (1,437.88 km) |
| Argentan to Ovada | 498.67 mi (802.53 km) |
| Argentan to Ozieri | 716.21 mi (1,152.63 km) |
| Argentan to Paceco | 972.85 mi (1,565.66 km) |
| Argentan to Pachino | 1,127.04 mi (1,813.79 km) |
