| Gig Harbor to Octeville | 4,868.52 mi (7,835.13 km) |
| Gig Harbor to Oignies | 4,945.17 mi (7,958.48 km) |
| Gig Harbor to Oissel | 4,958.49 mi (7,979.92 km) |
| Gig Harbor to Olivet | 5,062.81 mi (8,147.81 km) |
| Gig Harbor to Ollioules | 5,440.09 mi (8,754.98 km) |
| Gig Harbor to Olonne-sur-Mer | 5,033.62 mi (8,100.83 km) |
| Gig Harbor to Oloron-Sainte-Marie | 5,252.53 mi (8,453.12 km) |
| Gig Harbor to Onet Village | 5,279.46 mi (8,496.47 km) |
| Gig Harbor to Onnaing | 4,965.14 mi (7,990.63 km) |
| Gig Harbor to Orange | 5,353.95 mi (8,616.35 km) |
| Gig Harbor to Orchies | 4,951.25 mi (7,968.27 km) |
| Gig Harbor to Orleans | 5,060.87 mi (8,144.68 km) |
| Gig Harbor to Orly | 5,026.55 mi (8,089.45 km) |
| Gig Harbor to Ormesson-sur-Marne | 5,028.04 mi (8,091.85 km) |
| Gig Harbor to Orsay | 5,023.68 mi (8,084.83 km) |
