| Kilmarnock to Orbetello | 1,149.69 mi (1,850.25 km) |
| Kilmarnock to Oria | 1,448.69 mi (2,331.44 km) |
| Kilmarnock to Oristano | 1,239.10 mi (1,994.14 km) |
| Kilmarnock to Orta Nova | 1,343.11 mi (2,161.52 km) |
| Kilmarnock to Orte | 1,181.16 mi (1,900.89 km) |
| Kilmarnock to Ortona | 1,246.45 mi (2,005.97 km) |
| Kilmarnock to Orvieto | 1,158.54 mi (1,864.48 km) |
| Kilmarnock to Orzinuovi | 944.86 mi (1,520.60 km) |
| Kilmarnock to Osimo | 1,155.95 mi (1,860.33 km) |
| Kilmarnock to Ospitaletto | 940.34 mi (1,513.32 km) |
| Kilmarnock to Ostuni | 1,434.19 mi (2,308.11 km) |
| Kilmarnock to Ottaviano | 1,333.69 mi (2,146.36 km) |
| Kilmarnock to Ovada | 952.48 mi (1,532.87 km) |
| Kilmarnock to Ozieri | 1,205.96 mi (1,940.81 km) |
| Kilmarnock to Paceco | 1,451.98 mi (2,336.74 km) |
