| Florham Park to Octeville | 3,453.48 mi (5,557.84 km) |
| Florham Park to Oignies | 3,626.34 mi (5,836.03 km) |
| Florham Park to Oissel | 3,575.50 mi (5,754.22 km) |
| Florham Park to Olivet | 3,647.72 mi (5,870.43 km) |
| Florham Park to Ollioules | 3,959.06 mi (6,371.48 km) |
| Florham Park to Olonne-sur-Mer | 3,522.24 mi (5,668.49 km) |
| Florham Park to Oloron-Sainte-Marie | 3,665.14 mi (5,898.47 km) |
| Florham Park to Onet Village | 3,775.97 mi (6,076.84 km) |
| Florham Park to Onnaing | 3,653.15 mi (5,879.18 km) |
| Florham Park to Orange | 3,881.52 mi (6,246.71 km) |
| Florham Park to Orchies | 3,636.46 mi (5,852.32 km) |
| Florham Park to Orleans | 3,647.05 mi (5,869.37 km) |
| Florham Park to Orly | 3,645.51 mi (5,866.89 km) |
| Florham Park to Ormesson-sur-Marne | 3,650.55 mi (5,875.00 km) |
| Florham Park to Orsay | 3,638.04 mi (5,854.86 km) |
