| Sumner to Nuth | 4,989.76 mi (8,030.24 km) |
| Sumner to Oegstgeest | 4,883.17 mi (7,858.70 km) |
| Sumner to Oirschot | 4,942.24 mi (7,953.77 km) |
| Sumner to Oisterwijk | 4,935.06 mi (7,942.21 km) |
| Sumner to Oldebroek | 4,902.62 mi (7,890.00 km) |
| Sumner to Oldenzaal | 4,934.66 mi (7,941.57 km) |
| Sumner to Ommen | 4,911.05 mi (7,903.57 km) |
| Sumner to Oosterend | 4,875.00 mi (7,845.55 km) |
| Sumner to Oosterhout | 4,923.27 mi (7,923.24 km) |
| Sumner to Oosterwolde | 4,881.04 mi (7,855.27 km) |
| Sumner to Oostzaan | 4,879.17 mi (7,852.27 km) |
| Sumner to Opmeer | 4,865.69 mi (7,830.58 km) |
| Sumner to Oss | 4,932.34 mi (7,937.83 km) |
| Sumner to Oud-Beijerland | 4,902.22 mi (7,889.36 km) |
| Sumner to Oudenbosch | 4,918.13 mi (7,914.96 km) |
