| Rathfarnham to Novi di Modena | 966.35 mi (1,555.20 km) |
| Rathfarnham to Novi Ligure | 899.15 mi (1,447.04 km) |
| Rathfarnham to Nuoro | 1,156.73 mi (1,861.58 km) |
| Rathfarnham to Occhiobello | 989.53 mi (1,592.50 km) |
| Rathfarnham to Oderzo | 984.78 mi (1,584.85 km) |
| Rathfarnham to Oggiono | 869.30 mi (1,399.00 km) |
| Rathfarnham to Olbia | 1,127.60 mi (1,814.69 km) |
| Rathfarnham to Oleggio | 852.71 mi (1,372.31 km) |
| Rathfarnham to Olgiate Comasco | 855.70 mi (1,377.12 km) |
| Rathfarnham to Olgiate Olona | 859.86 mi (1,383.80 km) |
| Rathfarnham to Omegna | 831.55 mi (1,338.25 km) |
| Rathfarnham to Opera | 883.46 mi (1,421.79 km) |
| Rathfarnham to Oppeano | 957.64 mi (1,541.17 km) |
| Rathfarnham to Orbassano | 844.90 mi (1,359.74 km) |
| Rathfarnham to Orbetello | 1,099.41 mi (1,769.33 km) |
