| Campton Hills to Nuth | 4,219.54 mi (6,790.69 km) |
| Campton Hills to Oegstgeest | 4,122.04 mi (6,633.78 km) |
| Campton Hills to Oirschot | 4,176.86 mi (6,722.00 km) |
| Campton Hills to Oisterwijk | 4,170.19 mi (6,711.27 km) |
| Campton Hills to Oldebroek | 4,164.46 mi (6,702.05 km) |
| Campton Hills to Oldenzaal | 4,206.37 mi (6,769.51 km) |
| Campton Hills to Ommen | 4,180.59 mi (6,728.01 km) |
| Campton Hills to Oosterend | 4,150.56 mi (6,679.68 km) |
| Campton Hills to Oosterhout | 4,155.46 mi (6,687.57 km) |
| Campton Hills to Oosterwolde | 4,159.03 mi (6,693.32 km) |
| Campton Hills to Oostzaan | 4,128.37 mi (6,643.96 km) |
| Campton Hills to Opmeer | 4,121.37 mi (6,632.70 km) |
| Campton Hills to Oss | 4,175.17 mi (6,719.29 km) |
| Campton Hills to Oud-Beijerland | 4,132.52 mi (6,650.66 km) |
| Campton Hills to Oudenbosch | 4,145.14 mi (6,670.96 km) |
