| Solon to Nuth | 3,982.33 mi (6,408.93 km) |
| Solon to Oegstgeest | 3,888.65 mi (6,258.18 km) |
| Solon to Oirschot | 3,941.48 mi (6,343.19 km) |
| Solon to Oisterwijk | 3,935.05 mi (6,332.85 km) |
| Solon to Oldebroek | 3,934.81 mi (6,332.46 km) |
| Solon to Oldenzaal | 3,977.82 mi (6,401.69 km) |
| Solon to Ommen | 3,952.15 mi (6,360.37 km) |
| Solon to Oosterend | 3,923.98 mi (6,315.03 km) |
| Solon to Oosterhout | 3,920.04 mi (6,308.69 km) |
| Solon to Oosterwolde | 3,932.76 mi (6,329.17 km) |
| Solon to Oostzaan | 3,896.93 mi (6,271.50 km) |
| Solon to Opmeer | 3,891.39 mi (6,262.59 km) |
| Solon to Oss | 3,941.47 mi (6,343.19 km) |
| Solon to Oud-Beijerland | 3,897.19 mi (6,271.93 km) |
| Solon to Oudenbosch | 3,908.89 mi (6,290.75 km) |
