| Tarpon Springs to Oerlinghausen | 4,768.81 mi (7,674.66 km) |
| Tarpon Springs to Oestrich-Winkel | 4,786.55 mi (7,703.21 km) |
| Tarpon Springs to Offenburg | 4,819.52 mi (7,756.26 km) |
| Tarpon Springs to Oftersheim | 4,825.88 mi (7,766.50 km) |
| Tarpon Springs to Ohrdruf | 4,879.55 mi (7,852.87 km) |
| Tarpon Springs to Ohringen | 4,868.65 mi (7,835.33 km) |
| Tarpon Springs to Olbernhau | 4,989.11 mi (8,029.20 km) |
| Tarpon Springs to Olching | 4,971.08 mi (8,000.19 km) |
| Tarpon Springs to Oldenburg | 4,724.49 mi (7,603.34 km) |
| Tarpon Springs to Oldenburg in Holstein | 4,801.16 mi (7,726.73 km) |
| Tarpon Springs to Olfen | 4,722.55 mi (7,600.20 km) |
| Tarpon Springs to Olpe | 4,756.46 mi (7,654.78 km) |
| Tarpon Springs to Olsberg | 4,775.48 mi (7,685.39 km) |
| Tarpon Springs to Oranienburg | 4,929.84 mi (7,933.81 km) |
| Tarpon Springs to Ortenberg | 4,822.15 mi (7,760.51 km) |
