| Grosse Pointe Woods to Octeville | 3,736.10 mi (6,012.67 km) |
| Grosse Pointe Woods to Oignies | 3,893.54 mi (6,266.05 km) |
| Grosse Pointe Woods to Oissel | 3,854.67 mi (6,203.50 km) |
| Grosse Pointe Woods to Olivet | 3,935.38 mi (6,333.37 km) |
| Grosse Pointe Woods to Ollioules | 4,267.12 mi (6,867.27 km) |
| Grosse Pointe Woods to Olonne-sur-Mer | 3,826.66 mi (6,158.42 km) |
| Grosse Pointe Woods to Oloron-Sainte-Marie | 3,988.19 mi (6,418.38 km) |
| Grosse Pointe Woods to Onet Village | 4,084.57 mi (6,573.47 km) |
| Grosse Pointe Woods to Onnaing | 3,919.67 mi (6,308.10 km) |
| Grosse Pointe Woods to Orange | 4,186.23 mi (6,737.08 km) |
| Grosse Pointe Woods to Orchies | 3,903.10 mi (6,281.44 km) |
| Grosse Pointe Woods to Orleans | 3,934.43 mi (6,331.86 km) |
| Grosse Pointe Woods to Orly | 3,926.11 mi (6,318.46 km) |
| Grosse Pointe Woods to Ormesson-sur-Marne | 3,930.54 mi (6,325.60 km) |
| Grosse Pointe Woods to Orsay | 3,919.39 mi (6,307.64 km) |
