| Grosse Pointe Woods to Olivares | 3,939.63 mi (6,340.23 km) |
| Grosse Pointe Woods to Olivenza | 3,850.51 mi (6,196.79 km) |
| Grosse Pointe Woods to Olot | 4,158.93 mi (6,693.15 km) |
| Grosse Pointe Woods to Onate | 3,914.45 mi (6,299.70 km) |
| Grosse Pointe Woods to Onda | 4,118.52 mi (6,628.11 km) |
| Grosse Pointe Woods to Onteniente | 4,144.93 mi (6,670.63 km) |
| Grosse Pointe Woods to Orihuela | 4,156.77 mi (6,689.67 km) |
| Grosse Pointe Woods to Osuna | 3,995.51 mi (6,430.15 km) |
| Grosse Pointe Woods to Ourense | 3,694.04 mi (5,944.98 km) |
| Grosse Pointe Woods to Oviedo | 3,751.96 mi (6,038.20 km) |
| Grosse Pointe Woods to Paiporta | 4,131.16 mi (6,648.46 km) |
| Grosse Pointe Woods to Pajara | 3,887.72 mi (6,256.69 km) |
| Grosse Pointe Woods to Palafolls | 4,189.20 mi (6,741.87 km) |
| Grosse Pointe Woods to Palafrugell | 4,197.94 mi (6,755.93 km) |
| Grosse Pointe Woods to Palamos | 4,199.11 mi (6,757.82 km) |
