| Boca Raton to Oerlinghausen | 4,753.23 mi (7,649.58 km) |
| Boca Raton to Oestrich-Winkel | 4,763.37 mi (7,665.91 km) |
| Boca Raton to Offenburg | 4,790.79 mi (7,710.04 km) |
| Boca Raton to Oftersheim | 4,800.89 mi (7,726.29 km) |
| Boca Raton to Ohrdruf | 4,861.44 mi (7,823.73 km) |
| Boca Raton to Ohringen | 4,843.78 mi (7,795.32 km) |
| Boca Raton to Olbernhau | 4,972.59 mi (8,002.62 km) |
| Boca Raton to Olching | 4,944.24 mi (7,956.99 km) |
| Boca Raton to Oldenburg | 4,712.88 mi (7,584.66 km) |
| Boca Raton to Oldenburg in Holstein | 4,795.58 mi (7,717.75 km) |
| Boca Raton to Olfen | 4,705.16 mi (7,572.22 km) |
| Boca Raton to Olpe | 4,736.84 mi (7,623.21 km) |
| Boca Raton to Olsberg | 4,757.53 mi (7,656.51 km) |
| Boca Raton to Oranienburg | 4,920.53 mi (7,918.83 km) |
| Boca Raton to Ortenberg | 4,801.06 mi (7,726.55 km) |
