| Tranent to Orbetello | 1,126.59 mi (1,813.07 km) |
| Tranent to Oria | 1,416.18 mi (2,279.12 km) |
| Tranent to Oristano | 1,226.60 mi (1,974.02 km) |
| Tranent to Orta Nova | 1,312.63 mi (2,112.48 km) |
| Tranent to Orte | 1,155.36 mi (1,859.37 km) |
| Tranent to Ortona | 1,216.67 mi (1,958.04 km) |
| Tranent to Orvieto | 1,132.85 mi (1,823.15 km) |
| Tranent to Orzinuovi | 918.46 mi (1,478.11 km) |
| Tranent to Osimo | 1,125.81 mi (1,811.82 km) |
| Tranent to Ospitaletto | 913.19 mi (1,469.64 km) |
| Tranent to Ostuni | 1,401.40 mi (2,255.33 km) |
| Tranent to Ottaviano | 1,306.39 mi (2,102.43 km) |
| Tranent to Ovada | 931.30 mi (1,498.78 km) |
| Tranent to Ozieri | 1,191.42 mi (1,917.41 km) |
| Tranent to Paceco | 1,432.94 mi (2,306.09 km) |
