| Santarem to Nuth | 1,071.68 mi (1,724.70 km) |
| Santarem to Oegstgeest | 1,093.25 mi (1,759.41 km) |
| Santarem to Oirschot | 1,082.05 mi (1,741.40 km) |
| Santarem to Oisterwijk | 1,083.25 mi (1,743.32 km) |
| Santarem to Oldebroek | 1,147.26 mi (1,846.33 km) |
| Santarem to Oldenzaal | 1,171.14 mi (1,884.77 km) |
| Santarem to Ommen | 1,165.58 mi (1,875.82 km) |
| Santarem to Oosterend | 1,180.12 mi (1,899.22 km) |
| Santarem to Oosterhout | 1,076.23 mi (1,732.03 km) |
| Santarem to Oosterwolde | 1,185.76 mi (1,908.30 km) |
| Santarem to Oostzaan | 1,117.81 mi (1,798.94 km) |
| Santarem to Opmeer | 1,133.64 mi (1,824.42 km) |
| Santarem to Oss | 1,101.78 mi (1,773.15 km) |
| Santarem to Oud-Beijerland | 1,072.17 mi (1,725.50 km) |
| Santarem to Oudenbosch | 1,063.89 mi (1,712.16 km) |
