| Blaine to Orbetello | 4,807.07 mi (7,736.23 km) |
| Blaine to Oria | 5,136.69 mi (8,266.70 km) |
| Blaine to Oristano | 4,826.58 mi (7,767.63 km) |
| Blaine to Orta Nova | 5,025.84 mi (8,088.31 km) |
| Blaine to Orte | 4,849.47 mi (7,804.46 km) |
| Blaine to Ortona | 4,928.31 mi (7,931.35 km) |
| Blaine to Orvieto | 4,827.01 mi (7,768.32 km) |
| Blaine to Orzinuovi | 4,621.97 mi (7,438.34 km) |
| Blaine to Osimo | 4,840.36 mi (7,789.81 km) |
| Blaine to Ospitaletto | 4,619.89 mi (7,434.99 km) |
| Blaine to Ostuni | 5,123.15 mi (8,244.91 km) |
| Blaine to Ottaviano | 5,004.45 mi (8,053.88 km) |
| Blaine to Ovada | 4,609.75 mi (7,418.67 km) |
| Blaine to Ozieri | 4,810.73 mi (7,742.12 km) |
| Blaine to Paceco | 5,072.00 mi (8,162.59 km) |
