| Romilly-sur-Seine to Oakley (California) | 5,587.99 mi (8,993.00 km) |
| Romilly-sur-Seine to Oakton (Virginia) | 3,909.53 mi (6,291.79 km) |
| Romilly-sur-Seine to Oakville (Missouri) | 4,462.24 mi (7,181.28 km) |
| Romilly-sur-Seine to Oatfield (Oregon) | 5,184.98 mi (8,344.42 km) |
| Romilly-sur-Seine to Ocala (Florida) | 4,559.89 mi (7,338.44 km) |
| Romilly-sur-Seine to Ocean Acres (New Jersey) | 3,745.66 mi (6,028.05 km) |
| Romilly-sur-Seine to Ocean City (New Jersey) | 3,779.14 mi (6,081.94 km) |
| Romilly-sur-Seine to Ocean Pines (Maryland) | 3,839.72 mi (6,179.43 km) |
| Romilly-sur-Seine to Ocean Pointe (Hawaii) | 7,481.92 mi (12,040.98 km) |
| Romilly-sur-Seine to Ocean Springs (Mississippi) | 4,785.37 mi (7,701.31 km) |
| Romilly-sur-Seine to Oceanside (California) | 5,723.12 mi (9,210.47 km) |
| Romilly-sur-Seine to Oceanside (New York) | 3,681.70 mi (5,925.12 km) |
| Romilly-sur-Seine to Ocoee (Florida) | 4,561.44 mi (7,340.92 km) |
| Romilly-sur-Seine to Oconomowoc (Wisconsin) | 4,177.00 mi (6,722.24 km) |
| Romilly-sur-Seine to Odenton (Maryland) | 3,876.31 mi (6,238.31 km) |
