| Peterlee to Orbetello | 1,022.84 mi (1,646.10 km) |
| Peterlee to Oria | 1,314.51 mi (2,115.51 km) |
| Peterlee to Oristano | 1,124.01 mi (1,808.92 km) |
| Peterlee to Orta Nova | 1,210.23 mi (1,947.67 km) |
| Peterlee to Orte | 1,051.86 mi (1,692.81 km) |
| Peterlee to Ortona | 1,114.03 mi (1,792.86 km) |
| Peterlee to Orvieto | 1,029.34 mi (1,656.56 km) |
| Peterlee to Orzinuovi | 815.00 mi (1,311.62 km) |
| Peterlee to Osimo | 1,023.26 mi (1,646.77 km) |
| Peterlee to Ospitaletto | 809.86 mi (1,303.34 km) |
| Peterlee to Ostuni | 1,299.84 mi (2,091.89 km) |
| Peterlee to Ottaviano | 1,203.17 mi (1,936.32 km) |
| Peterlee to Ovada | 827.52 mi (1,331.77 km) |
| Peterlee to Ozieri | 1,088.37 mi (1,751.57 km) |
| Peterlee to Paceco | 1,329.23 mi (2,139.18 km) |
