| Sussex to Nuth | 4,155.74 mi (6,688.02 km) |
| Sussex to Oegstgeest | 4,057.60 mi (6,530.08 km) |
| Sussex to Oirschot | 4,112.75 mi (6,618.83 km) |
| Sussex to Oisterwijk | 4,106.04 mi (6,608.04 km) |
| Sussex to Oldebroek | 4,099.32 mi (6,597.21 km) |
| Sussex to Oldenzaal | 4,141.01 mi (6,664.31 km) |
| Sussex to Ommen | 4,115.22 mi (6,622.81 km) |
| Sussex to Oosterend | 4,084.88 mi (6,573.99 km) |
| Sussex to Oosterhout | 4,091.38 mi (6,584.44 km) |
| Sussex to Oosterwolde | 4,093.30 mi (6,587.53 km) |
| Sussex to Oostzaan | 4,063.57 mi (6,539.68 km) |
| Sussex to Opmeer | 4,056.32 mi (6,528.01 km) |
| Sussex to Oss | 4,110.75 mi (6,615.62 km) |
| Sussex to Oud-Beijerland | 4,068.44 mi (6,547.52 km) |
| Sussex to Oudenbosch | 4,081.22 mi (6,568.08 km) |
