| South Burlington to Orbetello | 4,036.09 mi (6,495.46 km) |
| South Burlington to Oria | 4,384.70 mi (7,056.49 km) |
| South Burlington to Oristano | 4,019.50 mi (6,468.76 km) |
| South Burlington to Orta Nova | 4,269.90 mi (6,871.73 km) |
| South Burlington to Orte | 4,085.04 mi (6,574.23 km) |
| South Burlington to Ortona | 4,174.07 mi (6,717.52 km) |
| South Burlington to Orvieto | 4,063.45 mi (6,539.50 km) |
| South Burlington to Orzinuovi | 3,872.67 mi (6,232.46 km) |
| South Burlington to Osimo | 4,091.53 mi (6,584.69 km) |
| South Burlington to Ospitaletto | 3,872.89 mi (6,232.82 km) |
| South Burlington to Ostuni | 4,372.90 mi (7,037.50 km) |
| South Burlington to Ottaviano | 4,237.19 mi (6,819.10 km) |
| South Burlington to Ovada | 3,846.20 mi (6,189.87 km) |
| South Burlington to Ozieri | 4,011.57 mi (6,456.00 km) |
| South Burlington to Paceco | 4,269.91 mi (6,871.75 km) |
