| Bartlett to Oerlinghausen | 4,674.68 mi (7,523.17 km) |
| Bartlett to Oestrich-Winkel | 4,715.83 mi (7,589.39 km) |
| Bartlett to Offenburg | 4,765.61 mi (7,669.50 km) |
| Bartlett to Oftersheim | 4,760.07 mi (7,660.60 km) |
| Bartlett to Ohrdruf | 4,791.15 mi (7,710.61 km) |
| Bartlett to Ohringen | 4,801.63 mi (7,727.48 km) |
| Bartlett to Olbernhau | 4,893.68 mi (7,875.61 km) |
| Bartlett to Olching | 4,908.33 mi (7,899.19 km) |
| Bartlett to Oldenburg | 4,618.86 mi (7,433.33 km) |
| Bartlett to Oldenburg in Holstein | 4,675.36 mi (7,524.27 km) |
| Bartlett to Olfen | 4,634.97 mi (7,459.26 km) |
| Bartlett to Olpe | 4,675.19 mi (7,524.00 km) |
| Bartlett to Olsberg | 4,688.60 mi (7,545.57 km) |
| Bartlett to Oranienburg | 4,813.12 mi (7,745.98 km) |
| Bartlett to Ortenberg | 4,744.22 mi (7,635.09 km) |
