| Richfield to Oerlinghausen | 4,302.23 mi (6,923.77 km) |
| Richfield to Oestrich-Winkel | 4,364.45 mi (7,023.90 km) |
| Richfield to Offenburg | 4,428.97 mi (7,127.74 km) |
| Richfield to Oftersheim | 4,412.17 mi (7,100.70 km) |
| Richfield to Ohrdruf | 4,420.97 mi (7,114.87 km) |
| Richfield to Ohringen | 4,451.44 mi (7,163.89 km) |
| Richfield to Olbernhau | 4,514.24 mi (7,264.96 km) |
| Richfield to Olching | 4,559.29 mi (7,337.47 km) |
| Richfield to Oldenburg | 4,237.11 mi (6,818.97 km) |
| Richfield to Oldenburg in Holstein | 4,273.40 mi (6,877.37 km) |
| Richfield to Olfen | 4,269.79 mi (6,871.57 km) |
| Richfield to Olpe | 4,314.90 mi (6,944.16 km) |
| Richfield to Olsberg | 4,322.61 mi (6,956.58 km) |
| Richfield to Oranienburg | 4,416.02 mi (7,106.90 km) |
| Richfield to Ortenberg | 4,385.20 mi (7,057.30 km) |
