| Tallmadge to Oerlinghausen | 4,067.01 mi (6,545.23 km) |
| Tallmadge to Oestrich-Winkel | 4,106.67 mi (6,609.05 km) |
| Tallmadge to Offenburg | 4,155.92 mi (6,688.31 km) |
| Tallmadge to Oftersheim | 4,150.74 mi (6,679.96 km) |
| Tallmadge to Ohrdruf | 4,183.15 mi (6,732.12 km) |
| Tallmadge to Ohringen | 4,192.37 mi (6,746.97 km) |
| Tallmadge to Olbernhau | 4,286.38 mi (6,898.26 km) |
| Tallmadge to Olching | 4,298.95 mi (6,918.50 km) |
| Tallmadge to Oldenburg | 4,012.19 mi (6,457.00 km) |
| Tallmadge to Oldenburg in Holstein | 4,071.21 mi (6,551.98 km) |
| Tallmadge to Olfen | 4,026.74 mi (6,480.41 km) |
| Tallmadge to Olpe | 4,066.58 mi (6,544.53 km) |
| Tallmadge to Olsberg | 4,080.38 mi (6,566.74 km) |
| Tallmadge to Oranienburg | 4,208.00 mi (6,772.13 km) |
| Tallmadge to Ortenberg | 4,135.47 mi (6,655.39 km) |
