| Riverton to Oerlinghausen | 5,123.41 mi (8,245.32 km) |
| Riverton to Oestrich-Winkel | 5,203.26 mi (8,373.83 km) |
| Riverton to Offenburg | 5,278.94 mi (8,495.64 km) |
| Riverton to Oftersheim | 5,252.95 mi (8,453.80 km) |
| Riverton to Ohrdruf | 5,241.47 mi (8,435.33 km) |
| Riverton to Ohringen | 5,289.36 mi (8,512.40 km) |
| Riverton to Olbernhau | 5,323.66 mi (8,567.60 km) |
| Riverton to Olching | 5,395.89 mi (8,683.85 km) |
| Riverton to Oldenburg | 5,051.03 mi (8,128.84 km) |
| Riverton to Oldenburg in Holstein | 5,066.10 mi (8,153.10 km) |
| Riverton to Olfen | 5,098.46 mi (8,205.17 km) |
| Riverton to Olpe | 5,146.93 mi (8,283.18 km) |
| Riverton to Olsberg | 5,149.30 mi (8,287.00 km) |
| Riverton to Oranienburg | 5,210.09 mi (8,384.84 km) |
| Riverton to Ortenberg | 5,216.77 mi (8,395.58 km) |
