| Niceville to Oswego (Illinois) | 777.62 mi (1,251.45 km) |
| Niceville to Oswego (New York) | 1,047.12 mi (1,685.17 km) |
| Niceville to Otsego (Minnesota) | 1,089.09 mi (1,752.72 km) |
| Niceville to Ottawa (Illinois) | 759.43 mi (1,222.18 km) |
| Niceville to Ottawa (Kansas) | 748.23 mi (1,204.16 km) |
| Niceville to Ottumwa (Iowa) | 797.22 mi (1,283.00 km) |
| Niceville to Overland (Missouri) | 606.04 mi (975.33 km) |
| Niceville to Overland Park (Kansas) | 741.62 mi (1,193.52 km) |
| Niceville to Overlea (Maryland) | 829.97 mi (1,335.71 km) |
| Niceville to Oviedo (Florida) | 342.92 mi (551.88 km) |
| Niceville to Owasso (Oklahoma) | 669.90 mi (1,078.11 km) |
| Niceville to Owatonna (Minnesota) | 1,007.03 mi (1,620.66 km) |
| Niceville to Owensboro (Kentucky) | 500.79 mi (805.94 km) |
| Niceville to Owings Mills (Maryland) | 821.90 mi (1,322.73 km) |
| Niceville to Owosso (Michigan) | 870.60 mi (1,401.10 km) |
