| Deltona to Orbetello | 5,017.06 mi (8,074.18 km) |
| Deltona to Oria | 5,374.60 mi (8,649.58 km) |
| Deltona to Oristano | 4,960.75 mi (7,983.56 km) |
| Deltona to Orta Nova | 5,259.12 mi (8,463.74 km) |
| Deltona to Orte | 5,071.17 mi (8,161.26 km) |
| Deltona to Ortona | 5,167.60 mi (8,316.45 km) |
| Deltona to Orvieto | 5,051.08 mi (8,128.93 km) |
| Deltona to Orzinuovi | 4,879.25 mi (7,852.40 km) |
| Deltona to Osimo | 5,092.42 mi (8,195.46 km) |
| Deltona to Ospitaletto | 4,881.54 mi (7,856.08 km) |
| Deltona to Ostuni | 5,364.78 mi (8,633.78 km) |
| Deltona to Ottaviano | 5,216.10 mi (8,394.50 km) |
| Deltona to Ovada | 4,840.20 mi (7,789.56 km) |
| Deltona to Ozieri | 4,962.53 mi (7,986.43 km) |
| Deltona to Paceco | 5,209.18 mi (8,383.36 km) |
