| North Augusta to Orbetello | 4,850.63 mi (7,806.34 km) |
| North Augusta to Oria | 5,205.55 mi (8,377.53 km) |
| North Augusta to Oristano | 4,810.53 mi (7,741.80 km) |
| North Augusta to Orta Nova | 5,089.99 mi (8,191.54 km) |
| North Augusta to Orte | 4,902.73 mi (7,890.18 km) |
| North Augusta to Ortona | 4,996.28 mi (8,040.74 km) |
| North Augusta to Orvieto | 4,881.92 mi (7,856.70 km) |
| North Augusta to Orzinuovi | 4,701.23 mi (7,565.91 km) |
| North Augusta to Osimo | 4,917.62 mi (7,914.15 km) |
| North Augusta to Ospitaletto | 4,702.61 mi (7,568.12 km) |
| North Augusta to Ostuni | 5,194.83 mi (8,360.28 km) |
| North Augusta to Ottaviano | 5,051.27 mi (8,129.24 km) |
| North Augusta to Ovada | 4,667.55 mi (7,511.69 km) |
| North Augusta to Ozieri | 4,808.38 mi (7,738.35 km) |
| North Augusta to Paceco | 5,060.81 mi (8,144.59 km) |
