| Des Plaines to Octeville | 3,953.05 mi (6,361.81 km) |
| Des Plaines to Oignies | 4,104.08 mi (6,604.88 km) |
| Des Plaines to Oissel | 4,069.93 mi (6,549.92 km) |
| Des Plaines to Olivet | 4,153.57 mi (6,684.53 km) |
| Des Plaines to Ollioules | 4,491.95 mi (7,229.09 km) |
| Des Plaines to Olonne-sur-Mer | 4,051.29 mi (6,519.92 km) |
| Des Plaines to Oloron-Sainte-Marie | 4,218.94 mi (6,789.72 km) |
| Des Plaines to Onet Village | 4,310.02 mi (6,936.31 km) |
| Des Plaines to Onnaing | 4,129.85 mi (6,646.36 km) |
| Des Plaines to Orange | 4,410.02 mi (7,097.24 km) |
| Des Plaines to Orchies | 4,113.39 mi (6,619.86 km) |
| Des Plaines to Orleans | 4,152.53 mi (6,682.85 km) |
| Des Plaines to Orly | 4,141.67 mi (6,665.38 km) |
| Des Plaines to Ormesson-sur-Marne | 4,145.87 mi (6,672.13 km) |
| Des Plaines to Orsay | 4,135.26 mi (6,655.06 km) |
