| Somersworth to Orbetello | 3,977.59 mi (6,401.32 km) |
| Somersworth to Oria | 4,329.10 mi (6,967.02 km) |
| Somersworth to Oristano | 3,952.53 mi (6,360.98 km) |
| Somersworth to Orta Nova | 4,213.87 mi (6,781.57 km) |
| Somersworth to Orte | 4,027.84 mi (6,482.19 km) |
| Somersworth to Ortona | 4,118.82 mi (6,628.59 km) |
| Somersworth to Orvieto | 4,006.55 mi (6,447.92 km) |
| Somersworth to Orzinuovi | 3,819.82 mi (6,147.41 km) |
| Somersworth to Osimo | 4,037.83 mi (6,498.26 km) |
| Somersworth to Ospitaletto | 3,820.55 mi (6,148.59 km) |
| Somersworth to Ostuni | 4,317.73 mi (6,948.72 km) |
| Somersworth to Ottaviano | 4,178.75 mi (6,725.04 km) |
| Somersworth to Ovada | 3,790.23 mi (6,099.78 km) |
| Somersworth to Ozieri | 3,946.54 mi (6,351.35 km) |
| Somersworth to Paceco | 4,203.24 mi (6,764.47 km) |
