| Ridgefield to Orbetello | 4,201.71 mi (6,762.00 km) |
| Ridgefield to Oria | 4,554.31 mi (7,329.46 km) |
| Ridgefield to Oristano | 4,172.31 mi (6,714.69 km) |
| Ridgefield to Orta Nova | 4,438.95 mi (7,143.80 km) |
| Ridgefield to Orte | 4,252.51 mi (6,843.76 km) |
| Ridgefield to Ortona | 4,344.25 mi (6,991.40 km) |
| Ridgefield to Orvieto | 4,231.35 mi (6,809.70 km) |
| Ridgefield to Orzinuovi | 4,046.32 mi (6,511.92 km) |
| Ridgefield to Osimo | 4,263.91 mi (6,862.11 km) |
| Ridgefield to Ospitaletto | 4,047.24 mi (6,513.40 km) |
| Ridgefield to Ostuni | 4,543.13 mi (7,311.45 km) |
| Ridgefield to Ottaviano | 4,402.79 mi (7,085.61 km) |
| Ridgefield to Ovada | 4,015.52 mi (6,462.35 km) |
| Ridgefield to Ozieri | 4,167.43 mi (6,706.82 km) |
| Ridgefield to Paceco | 4,423.05 mi (7,118.21 km) |
