| Triangle to Nuth | 3,950.37 mi (6,357.51 km) |
| Triangle to Oegstgeest | 3,861.54 mi (6,214.55 km) |
| Triangle to Oirschot | 3,911.81 mi (6,295.45 km) |
| Triangle to Oisterwijk | 3,905.69 mi (6,285.61 km) |
| Triangle to Oldebroek | 3,911.34 mi (6,294.70 km) |
| Triangle to Oldenzaal | 3,955.21 mi (6,365.29 km) |
| Triangle to Ommen | 3,929.84 mi (6,324.47 km) |
| Triangle to Oosterend | 3,903.85 mi (6,282.64 km) |
| Triangle to Oosterhout | 3,890.48 mi (6,261.13 km) |
| Triangle to Oosterwolde | 3,912.90 mi (6,297.20 km) |
| Triangle to Oostzaan | 3,871.84 mi (6,231.13 km) |
| Triangle to Opmeer | 3,867.91 mi (6,224.79 km) |
| Triangle to Oss | 3,913.62 mi (6,298.37 km) |
| Triangle to Oud-Beijerland | 3,867.92 mi (6,224.81 km) |
| Triangle to Oudenbosch | 3,878.52 mi (6,241.88 km) |
