| Kos to Oegstgeest | 1,530.65 mi (2,463.34 km) |
| Kos to Oirschot | 1,474.50 mi (2,372.98 km) |
| Kos to Oisterwijk | 1,481.31 mi (2,383.94 km) |
| Kos to Oldebroek | 1,492.74 mi (2,402.34 km) |
| Kos to Oldenzaal | 1,452.92 mi (2,338.24 km) |
| Kos to Ommen | 1,478.53 mi (2,379.46 km) |
| Kos to Oosterend | 1,511.07 mi (2,431.84 km) |
| Kos to Oosterhout | 1,495.78 mi (2,407.22 km) |
| Kos to Oosterwolde | 1,503.25 mi (2,419.25 km) |
| Kos to Oostzaan | 1,526.31 mi (2,456.35 km) |
| Kos to Opmeer | 1,534.96 mi (2,470.28 km) |
| Kos to Oss | 1,477.54 mi (2,377.87 km) |
| Kos to Oud-Beijerland | 1,518.69 mi (2,444.10 km) |
| Kos to Oudenbosch | 1,505.54 mi (2,422.93 km) |
| Kos to Oudewater | 1,510.14 mi (2,430.34 km) |
