| Acomb to Orbetello | 974.73 mi (1,568.68 km) |
| Acomb to Oria | 1,272.47 mi (2,047.84 km) |
| Acomb to Oristano | 1,071.23 mi (1,723.98 km) |
| Acomb to Orta Nova | 1,166.74 mi (1,877.68 km) |
| Acomb to Orte | 1,005.33 mi (1,617.92 km) |
| Acomb to Ortona | 1,070.08 mi (1,722.13 km) |
| Acomb to Orvieto | 982.73 mi (1,581.55 km) |
| Acomb to Orzinuovi | 768.82 mi (1,237.30 km) |
| Acomb to Osimo | 979.58 mi (1,576.48 km) |
| Acomb to Ospitaletto | 764.17 mi (1,229.81 km) |
| Acomb to Ostuni | 1,258.01 mi (2,024.58 km) |
| Acomb to Ottaviano | 1,157.57 mi (1,862.93 km) |
| Acomb to Ovada | 778.30 mi (1,252.56 km) |
| Acomb to Ozieri | 1,036.31 mi (1,667.79 km) |
| Acomb to Paceco | 1,279.16 mi (2,058.61 km) |
