| Deltona to Oswego (Illinois) | 969.10 mi (1,559.61 km) |
| Deltona to Oswego (New York) | 1,038.40 mi (1,671.15 km) |
| Deltona to Otsego (Minnesota) | 1,317.63 mi (2,120.53 km) |
| Deltona to Ottawa (Illinois) | 960.81 mi (1,546.27 km) |
| Deltona to Ottawa (Kansas) | 1,046.65 mi (1,684.42 km) |
| Deltona to Ottumwa (Iowa) | 1,048.35 mi (1,687.15 km) |
| Deltona to Overland (Missouri) | 855.71 mi (1,377.13 km) |
| Deltona to Overland Park (Kansas) | 1,033.60 mi (1,663.42 km) |
| Deltona to Overlea (Maryland) | 770.64 mi (1,240.22 km) |
| Deltona to Oviedo (Florida) | 17.14 mi (27.59 km) |
| Deltona to Owasso (Oklahoma) | 990.37 mi (1,593.84 km) |
| Deltona to Owatonna (Minnesota) | 1,240.56 mi (1,996.49 km) |
| Deltona to Owensboro (Kentucky) | 699.78 mi (1,126.19 km) |
| Deltona to Owings Mills (Maryland) | 768.42 mi (1,236.65 km) |
| Deltona to Owosso (Michigan) | 987.38 mi (1,589.03 km) |
