| Gretna to Perth | 4,398.87 mi (7,079.31 km) |
| Gretna to Peterborough | 4,599.44 mi (7,402.09 km) |
| Gretna to Peterhead | 4,438.29 mi (7,142.74 km) |
| Gretna to Peterlee | 4,509.38 mi (7,257.15 km) |
| Gretna to Petersfield | 4,606.69 mi (7,413.75 km) |
| Gretna to Pinner | 4,615.53 mi (7,427.97 km) |
| Gretna to Pitsea | 4,652.19 mi (7,486.98 km) |
| Gretna to Plumstead | 4,637.32 mi (7,463.05 km) |
| Gretna to Plymouth | 4,487.26 mi (7,221.55 km) |
| Gretna to Plympton | 4,490.79 mi (7,227.23 km) |
| Gretna to Plymstock | 4,489.76 mi (7,225.56 km) |
| Gretna to Polegate | 4,659.39 mi (7,498.57 km) |
| Gretna to Ponders End | 4,628.19 mi (7,448.35 km) |
| Gretna to Pont-y-pwl | 4,505.31 mi (7,250.60 km) |
| Gretna to Pontardulais | 4,464.31 mi (7,184.61 km) |
