| Dalkeith to Orbetello | 1,126.60 mi (1,813.09 km) |
| Dalkeith to Oria | 1,417.08 mi (2,280.57 km) |
| Dalkeith to Oristano | 1,225.71 mi (1,972.59 km) |
| Dalkeith to Orta Nova | 1,313.34 mi (2,113.61 km) |
| Dalkeith to Orte | 1,155.62 mi (1,859.78 km) |
| Dalkeith to Ortona | 1,217.30 mi (1,959.05 km) |
| Dalkeith to Orvieto | 1,133.10 mi (1,823.54 km) |
| Dalkeith to Orzinuovi | 918.74 mi (1,478.56 km) |
| Dalkeith to Osimo | 1,126.46 mi (1,812.87 km) |
| Dalkeith to Ospitaletto | 913.54 mi (1,470.20 km) |
| Dalkeith to Ostuni | 1,402.32 mi (2,256.82 km) |
| Dalkeith to Ottaviano | 1,306.80 mi (2,103.09 km) |
| Dalkeith to Ovada | 931.11 mi (1,498.48 km) |
| Dalkeith to Ozieri | 1,190.70 mi (1,916.25 km) |
| Dalkeith to Paceco | 1,432.62 mi (2,305.59 km) |
