| Gretna to Oststeinbek | 4,971.89 mi (8,001.48 km) |
| Gretna to Ottendorf-Okrilla | 5,184.68 mi (8,343.94 km) |
| Gretna to Ottersberg | 4,947.57 mi (7,962.34 km) |
| Gretna to Ottobrunn | 5,204.58 mi (8,375.97 km) |
| Gretna to Ottweiler | 4,981.08 mi (8,016.27 km) |
| Gretna to Overath | 4,939.91 mi (7,950.02 km) |
| Gretna to Oyten | 4,943.78 mi (7,956.25 km) |
| Gretna to Paderborn | 4,973.91 mi (8,004.74 km) |
| Gretna to Papenburg | 4,882.72 mi (7,857.98 km) |
| Gretna to Parchim | 5,037.02 mi (8,106.31 km) |
| Gretna to Pasewalk | 5,112.85 mi (8,228.33 km) |
| Gretna to Passau | 5,259.56 mi (8,464.45 km) |
| Gretna to Pattensen | 4,996.00 mi (8,040.28 km) |
| Gretna to Pegnitz | 5,144.13 mi (8,278.68 km) |
| Gretna to Peine | 5,012.01 mi (8,066.05 km) |
