| Olhao to Noventa Vicentina | 1,153.85 mi (1,856.94 km) |
| Olhao to Novi di Modena | 1,114.99 mi (1,794.40 km) |
| Olhao to Novi Ligure | 1,016.67 mi (1,636.18 km) |
| Olhao to Nuoro | 952.26 mi (1,532.51 km) |
| Olhao to Occhiobello | 1,146.55 mi (1,845.20 km) |
| Olhao to Oderzo | 1,209.98 mi (1,947.28 km) |
| Olhao to Oggiono | 1,073.34 mi (1,727.37 km) |
| Olhao to Olbia | 967.66 mi (1,557.29 km) |
| Olhao to Oleggio | 1,036.91 mi (1,668.74 km) |
| Olhao to Olgiate Comasco | 1,057.12 mi (1,701.27 km) |
| Olhao to Olgiate Olona | 1,048.60 mi (1,687.56 km) |
| Olhao to Omegna | 1,036.95 mi (1,668.81 km) |
| Olhao to Opera | 1,054.78 mi (1,697.50 km) |
| Olhao to Oppeano | 1,138.66 mi (1,832.49 km) |
| Olhao to Orbassano | 970.43 mi (1,561.75 km) |
