| Pont-a-Mousson to Oria | 811.00 mi (1,305.18 km) |
| Pont-a-Mousson to Oristano | 634.13 mi (1,020.54 km) |
| Pont-a-Mousson to Orta Nova | 702.82 mi (1,131.08 km) |
| Pont-a-Mousson to Orte | 539.63 mi (868.46 km) |
| Pont-a-Mousson to Ortona | 605.66 mi (974.71 km) |
| Pont-a-Mousson to Orvieto | 517.07 mi (832.15 km) |
| Pont-a-Mousson to Orzinuovi | 302.98 mi (487.60 km) |
| Pont-a-Mousson to Osimo | 515.80 mi (830.11 km) |
| Pont-a-Mousson to Ospitaletto | 298.41 mi (480.25 km) |
| Pont-a-Mousson to Ostuni | 797.08 mi (1,282.77 km) |
| Pont-a-Mousson to Ottaviano | 691.75 mi (1,113.26 km) |
| Pont-a-Mousson to Ovada | 319.16 mi (513.64 km) |
| Pont-a-Mousson to Ozieri | 592.64 mi (953.75 km) |
| Pont-a-Mousson to Paceco | 821.17 mi (1,321.55 km) |
| Pont-a-Mousson to Pachino | 957.23 mi (1,540.52 km) |
