| Niceville to Odessa (Texas) | 941.65 mi (1,515.45 km) |
| Niceville to Ogden (Utah) | 1,598.89 mi (2,573.17 km) |
| Niceville to Oildale (California) | 1,908.22 mi (3,070.98 km) |
| Niceville to Ojus (Florida) | 497.34 mi (800.40 km) |
| Niceville to Okemos (Michigan) | 848.98 mi (1,366.30 km) |
| Niceville to Oklahoma City (Oklahoma) | 724.34 mi (1,165.71 km) |
| Niceville to Okmulgee (Oklahoma) | 653.71 mi (1,052.05 km) |
| Niceville to Olathe (Kansas) | 746.17 mi (1,200.85 km) |
| Niceville to Old Jamestown (Missouri) | 613.47 mi (987.29 km) |
| Niceville to Oldsmar (Florida) | 286.14 mi (460.50 km) |
| Niceville to Olean (New York) | 914.23 mi (1,471.31 km) |
| Niceville to Olive Branch (Mississippi) | 363.49 mi (584.99 km) |
| Niceville to Olivehurst (California) | 2,061.80 mi (3,318.14 km) |
| Niceville to Olney (Maryland) | 798.35 mi (1,284.81 km) |
| Niceville to Olympia (Washington) | 2,240.29 mi (3,605.40 km) |
