| North Branch to Nuth | 4,209.94 mi (6,775.24 km) |
| North Branch to Oegstgeest | 4,108.71 mi (6,612.34 km) |
| North Branch to Oirschot | 4,165.43 mi (6,703.60 km) |
| North Branch to Oisterwijk | 4,158.53 mi (6,692.51 km) |
| North Branch to Oldebroek | 4,146.35 mi (6,672.91 km) |
| North Branch to Oldenzaal | 4,186.61 mi (6,737.70 km) |
| North Branch to Ommen | 4,160.92 mi (6,696.36 km) |
| North Branch to Oosterend | 4,128.98 mi (6,644.96 km) |
| North Branch to Oosterhout | 4,144.27 mi (6,669.56 km) |
| North Branch to Oosterwolde | 4,137.02 mi (6,657.90 km) |
| North Branch to Oostzaan | 4,112.68 mi (6,618.72 km) |
| North Branch to Opmeer | 4,104.03 mi (6,604.79 km) |
| North Branch to Oss | 4,161.75 mi (6,697.69 km) |
| North Branch to Oud-Beijerland | 4,121.42 mi (6,632.78 km) |
| North Branch to Oudenbosch | 4,135.02 mi (6,654.68 km) |
