| Bluffton to Oerlinghausen | 4,487.07 mi (7,221.24 km) |
| Bluffton to Oestrich-Winkel | 4,509.03 mi (7,256.59 km) |
| Bluffton to Offenburg | 4,545.32 mi (7,314.99 km) |
| Bluffton to Oftersheim | 4,549.38 mi (7,321.52 km) |
| Bluffton to Ohrdruf | 4,599.03 mi (7,401.42 km) |
| Bluffton to Ohringen | 4,592.02 mi (7,390.14 km) |
| Bluffton to Olbernhau | 4,707.60 mi (7,576.15 km) |
| Bluffton to Olching | 4,695.50 mi (7,556.68 km) |
| Bluffton to Oldenburg | 4,440.74 mi (7,146.68 km) |
| Bluffton to Oldenburg in Holstein | 4,514.41 mi (7,265.25 km) |
| Bluffton to Olfen | 4,441.84 mi (7,148.44 km) |
| Bluffton to Olpe | 4,476.95 mi (7,204.95 km) |
| Bluffton to Olsberg | 4,495.01 mi (7,234.02 km) |
| Bluffton to Oranienburg | 4,644.72 mi (7,474.95 km) |
| Bluffton to Ortenberg | 4,543.39 mi (7,311.88 km) |
