| Portlethen to Nuth | 534.23 mi (859.76 km) |
| Portlethen to Oegstgeest | 427.64 mi (688.21 km) |
| Portlethen to Oirschot | 486.72 mi (783.30 km) |
| Portlethen to Oisterwijk | 479.54 mi (771.74 km) |
| Portlethen to Oldebroek | 451.12 mi (726.00 km) |
| Portlethen to Oldenzaal | 487.61 mi (784.73 km) |
| Portlethen to Ommen | 462.54 mi (744.39 km) |
| Portlethen to Oosterend | 428.37 mi (689.39 km) |
| Portlethen to Oosterhout | 467.78 mi (752.82 km) |
| Portlethen to Oosterwolde | 435.75 mi (701.27 km) |
| Portlethen to Oostzaan | 424.38 mi (682.97 km) |
| Portlethen to Opmeer | 411.89 mi (662.87 km) |
| Portlethen to Oss | 477.27 mi (768.09 km) |
| Portlethen to Oud-Beijerland | 446.95 mi (719.30 km) |
| Portlethen to Oudenbosch | 463.02 mi (745.17 km) |
