| Romilly-sur-Seine to Odessa (Texas) | 5,259.20 mi (8,463.86 km) |
| Romilly-sur-Seine to Ogden (Utah) | 5,104.34 mi (8,214.64 km) |
| Romilly-sur-Seine to Oildale (California) | 5,653.46 mi (9,098.36 km) |
| Romilly-sur-Seine to Ojus (Florida) | 4,626.77 mi (7,446.06 km) |
| Romilly-sur-Seine to Okemos (Michigan) | 4,035.50 mi (6,494.52 km) |
| Romilly-sur-Seine to Oklahoma City (Oklahoma) | 4,889.06 mi (7,868.19 km) |
| Romilly-sur-Seine to Okmulgee (Oklahoma) | 4,823.18 mi (7,762.15 km) |
| Romilly-sur-Seine to Olathe (Kansas) | 4,616.78 mi (7,429.99 km) |
| Romilly-sur-Seine to Old Jamestown (Missouri) | 4,442.43 mi (7,149.40 km) |
| Romilly-sur-Seine to Oldsmar (Florida) | 4,636.58 mi (7,461.86 km) |
| Romilly-sur-Seine to Olean (New York) | 3,821.53 mi (6,150.16 km) |
| Romilly-sur-Seine to Olive Branch (Mississippi) | 4,609.01 mi (7,417.49 km) |
| Romilly-sur-Seine to Olivehurst (California) | 5,521.08 mi (8,885.32 km) |
| Romilly-sur-Seine to Olney (Maryland) | 3,888.80 mi (6,258.42 km) |
| Romilly-sur-Seine to Olympia (Washington) | 5,099.17 mi (8,206.32 km) |
