| Somersworth to Nuth | 3,484.54 mi (5,607.82 km) |
| Somersworth to Oegstgeest | 3,395.11 mi (5,463.91 km) |
| Somersworth to Oirschot | 3,445.68 mi (5,545.29 km) |
| Somersworth to Oisterwijk | 3,439.52 mi (5,535.38 km) |
| Somersworth to Oldebroek | 3,444.61 mi (5,543.56 km) |
| Somersworth to Oldenzaal | 3,488.42 mi (5,614.07 km) |
| Somersworth to Ommen | 3,463.02 mi (5,573.20 km) |
| Somersworth to Oosterend | 3,436.88 mi (5,531.13 km) |
| Somersworth to Oosterhout | 3,424.33 mi (5,510.93 km) |
| Somersworth to Oosterwolde | 3,445.92 mi (5,545.67 km) |
| Somersworth to Oostzaan | 3,405.23 mi (5,480.19 km) |
| Somersworth to Opmeer | 3,401.16 mi (5,473.64 km) |
| Somersworth to Oss | 3,447.29 mi (5,547.88 km) |
| Somersworth to Oud-Beijerland | 3,401.72 mi (5,474.55 km) |
| Somersworth to Oudenbosch | 3,412.46 mi (5,491.82 km) |
