| Imperial Beach to Octeville | 5,520.76 mi (8,884.80 km) |
| Imperial Beach to Oignies | 5,637.98 mi (9,073.44 km) |
| Imperial Beach to Oissel | 5,627.03 mi (9,055.84 km) |
| Imperial Beach to Olivet | 5,722.55 mi (9,209.56 km) |
| Imperial Beach to Ollioules | 6,085.82 mi (9,794.17 km) |
| Imperial Beach to Olonne-sur-Mer | 5,652.13 mi (9,096.22 km) |
| Imperial Beach to Oloron-Sainte-Marie | 5,844.86 mi (9,406.39 km) |
| Imperial Beach to Onet Village | 5,910.07 mi (9,511.34 km) |
| Imperial Beach to Onnaing | 5,661.33 mi (9,111.03 km) |
| Imperial Beach to Orange | 6,000.43 mi (9,656.75 km) |
| Imperial Beach to Orchies | 5,645.83 mi (9,086.08 km) |
| Imperial Beach to Orleans | 5,721.06 mi (9,207.15 km) |
| Imperial Beach to Orly | 5,698.51 mi (9,170.87 km) |
| Imperial Beach to Ormesson-sur-Marne | 5,701.46 mi (9,175.61 km) |
| Imperial Beach to Orsay | 5,693.71 mi (9,163.13 km) |
