| Gretna to Nyon | 5,030.68 mi (8,096.09 km) |
| Gretna to Oberriet | 5,142.79 mi (8,276.53 km) |
| Gretna to Obersiggenthal | 5,084.36 mi (8,182.49 km) |
| Gretna to Oberwil | 5,052.70 mi (8,131.54 km) |
| Gretna to Oberwingert | 5,103.30 mi (8,212.97 km) |
| Gretna to Oftringen | 5,073.90 mi (8,165.65 km) |
| Gretna to Olten | 5,072.18 mi (8,162.88 km) |
| Gretna to Onex | 5,030.90 mi (8,096.45 km) |
| Gretna to Opfikon | 5,097.48 mi (8,203.61 km) |
| Gretna to Ostermundigen | 5,066.98 mi (8,154.52 km) |
| Gretna to Payerne | 5,047.59 mi (8,123.32 km) |
| Gretna to Pfaffikon | 5,108.60 mi (8,221.50 km) |
| Gretna to Plan-les-Ouates | 5,032.12 mi (8,098.41 km) |
| Gretna to Pratteln | 5,058.69 mi (8,141.18 km) |
| Gretna to Prilly | 5,041.91 mi (8,114.17 km) |
