| Omurtag to Oegstgeest | 1,192.04 mi (1,918.41 km) |
| Omurtag to Oirschot | 1,141.03 mi (1,836.31 km) |
| Omurtag to Oisterwijk | 1,147.19 mi (1,846.22 km) |
| Omurtag to Oldebroek | 1,144.67 mi (1,842.16 km) |
| Omurtag to Oldenzaal | 1,101.63 mi (1,772.90 km) |
| Omurtag to Ommen | 1,127.32 mi (1,814.24 km) |
| Omurtag to Oosterend | 1,155.92 mi (1,860.27 km) |
| Omurtag to Oosterhout | 1,162.38 mi (1,870.67 km) |
| Omurtag to Oosterwolde | 1,147.24 mi (1,846.31 km) |
| Omurtag to Oostzaan | 1,182.89 mi (1,903.67 km) |
| Omurtag to Opmeer | 1,188.10 mi (1,912.06 km) |
| Omurtag to Oss | 1,139.62 mi (1,834.05 km) |
| Omurtag to Oud-Beijerland | 1,185.00 mi (1,907.07 km) |
| Omurtag to Oudenbosch | 1,174.28 mi (1,889.82 km) |
| Omurtag to Oudewater | 1,171.91 mi (1,886.01 km) |
