| New Smyrna Beach to Oerlinghausen | 4,651.20 mi (7,485.38 km) |
| New Smyrna Beach to Oestrich-Winkel | 4,667.46 mi (7,511.56 km) |
| New Smyrna Beach to Offenburg | 4,699.47 mi (7,563.06 km) |
| New Smyrna Beach to Oftersheim | 4,706.48 mi (7,574.34 km) |
| New Smyrna Beach to Ohrdruf | 4,761.45 mi (7,662.81 km) |
| New Smyrna Beach to Ohringen | 4,749.28 mi (7,643.22 km) |
| New Smyrna Beach to Olbernhau | 4,871.36 mi (7,839.70 km) |
| New Smyrna Beach to Olching | 4,851.39 mi (7,807.55 km) |
| New Smyrna Beach to Oldenburg | 4,607.70 mi (7,415.38 km) |
| New Smyrna Beach to Oldenburg in Holstein | 4,685.75 mi (7,540.98 km) |
| New Smyrna Beach to Olfen | 4,604.55 mi (7,410.31 km) |
| New Smyrna Beach to Olpe | 4,638.04 mi (7,464.20 km) |
| New Smyrna Beach to Olsberg | 4,657.39 mi (7,495.35 km) |
| New Smyrna Beach to Oranienburg | 4,813.61 mi (7,746.75 km) |
| New Smyrna Beach to Ortenberg | 4,703.47 mi (7,569.50 km) |
