| Martinsicuro to Oria | 252.71 mi (406.70 km) |
| Martinsicuro to Oristano | 344.13 mi (553.82 km) |
| Martinsicuro to Orta Nova | 141.31 mi (227.41 km) |
| Martinsicuro to Orte | 83.07 mi (133.68 km) |
| Martinsicuro to Ortona | 44.29 mi (71.28 km) |
| Martinsicuro to Orvieto | 92.28 mi (148.51 km) |
| Martinsicuro to Orzinuovi | 263.09 mi (423.40 km) |
| Martinsicuro to Osimo | 46.85 mi (75.41 km) |
| Martinsicuro to Ospitaletto | 265.09 mi (426.62 km) |
| Martinsicuro to Ostuni | 240.22 mi (386.60 km) |
| Martinsicuro to Ottaviano | 143.42 mi (230.81 km) |
| Martinsicuro to Ovada | 289.55 mi (465.99 km) |
| Martinsicuro to Ozieri | 298.92 mi (481.06 km) |
| Martinsicuro to Paceco | 346.09 mi (556.98 km) |
| Martinsicuro to Pachino | 430.66 mi (693.08 km) |
