| Portlethen to Noventa Vicentina | 1,002.29 mi (1,613.03 km) |
| Portlethen to Novi di Modena | 1,010.23 mi (1,625.81 km) |
| Portlethen to Novi Ligure | 971.27 mi (1,563.10 km) |
| Portlethen to Nuoro | 1,265.61 mi (2,036.81 km) |
| Portlethen to Occhiobello | 1,025.00 mi (1,649.58 km) |
| Portlethen to Oderzo | 997.87 mi (1,605.91 km) |
| Portlethen to Oggiono | 920.22 mi (1,480.94 km) |
| Portlethen to Olbia | 1,229.87 mi (1,979.28 km) |
| Portlethen to Oleggio | 915.70 mi (1,473.67 km) |
| Portlethen to Olgiate Comasco | 911.64 mi (1,467.15 km) |
| Portlethen to Olgiate Olona | 919.04 mi (1,479.05 km) |
| Portlethen to Omegna | 893.63 mi (1,438.16 km) |
| Portlethen to Opera | 941.75 mi (1,515.60 km) |
| Portlethen to Oppeano | 992.64 mi (1,597.50 km) |
| Portlethen to Orbassano | 930.66 mi (1,497.75 km) |
