| Gretna to Oswaldtwistle | 4,489.25 mi (7,224.75 km) |
| Gretna to Oswestry | 4,481.06 mi (7,211.57 km) |
| Gretna to Otley | 4,513.41 mi (7,263.62 km) |
| Gretna to Ovenden | 4,509.34 mi (7,257.09 km) |
| Gretna to Oxford | 4,576.78 mi (7,365.61 km) |
| Gretna to Oxted | 4,638.89 mi (7,465.57 km) |
| Gretna to Padbury | 4,584.24 mi (7,377.63 km) |
| Gretna to Padiham | 4,491.35 mi (7,228.13 km) |
| Gretna to Paignton | 4,510.27 mi (7,258.58 km) |
| Gretna to Paisley | 4,371.74 mi (7,035.63 km) |
| Gretna to Palmers Green | 4,626.29 mi (7,445.29 km) |
| Gretna to Parkstone | 4,571.54 mi (7,357.19 km) |
| Gretna to Partick | 4,375.49 mi (7,041.68 km) |
| Gretna to Patcham | 4,642.23 mi (7,470.95 km) |
| Gretna to Peebles | 4,421.59 mi (7,115.87 km) |
