| South River to Oswaldtwistle | 3,352.69 mi (5,395.64 km) |
| South River to Oswestry | 3,342.31 mi (5,378.93 km) |
| South River to Otley | 3,377.56 mi (5,435.65 km) |
| South River to Ovenden | 3,373.01 mi (5,428.33 km) |
| South River to Oxford | 3,436.67 mi (5,530.78 km) |
| South River to Oxted | 3,498.43 mi (5,630.18 km) |
| South River to Padbury | 3,444.59 mi (5,543.54 km) |
| South River to Padiham | 3,354.96 mi (5,399.29 km) |
| South River to Paignton | 3,368.06 mi (5,420.36 km) |
| South River to Paisley | 3,240.40 mi (5,214.92 km) |
| South River to Palmers Green | 3,486.35 mi (5,610.73 km) |
| South River to Parkstone | 3,429.88 mi (5,519.86 km) |
| South River to Partick | 3,244.29 mi (5,221.18 km) |
| South River to Patcham | 3,501.20 mi (5,634.63 km) |
| South River to Peebles | 3,290.17 mi (5,295.02 km) |
