| Oliveira do Hospital to Nuth | 983.28 mi (1,582.44 km) |
| Oliveira do Hospital to Oegstgeest | 1,004.11 mi (1,615.96 km) |
| Oliveira do Hospital to Oirschot | 993.21 mi (1,598.42 km) |
| Oliveira do Hospital to Oisterwijk | 994.35 mi (1,600.25 km) |
| Oliveira do Hospital to Oldebroek | 1,058.25 mi (1,703.08 km) |
| Oliveira do Hospital to Oldenzaal | 1,082.37 mi (1,741.91 km) |
| Oliveira do Hospital to Ommen | 1,076.64 mi (1,732.68 km) |
| Oliveira do Hospital to Oosterend | 1,091.02 mi (1,755.83 km) |
| Oliveira do Hospital to Oosterhout | 987.25 mi (1,588.83 km) |
| Oliveira do Hospital to Oosterwolde | 1,096.69 mi (1,764.95 km) |
| Oliveira do Hospital to Oostzaan | 1,028.68 mi (1,655.50 km) |
| Oliveira do Hospital to Opmeer | 1,044.49 mi (1,680.94 km) |
| Oliveira do Hospital to Oss | 1,012.89 mi (1,630.09 km) |
| Oliveira do Hospital to Oud-Beijerland | 983.08 mi (1,582.11 km) |
| Oliveira do Hospital to Oudenbosch | 974.86 mi (1,568.88 km) |
