| Ritterhude to Olympia Heights (Florida) | 4,777.50 mi (7,688.65 km) |
| Ritterhude to Omaha (Nebraska) | 4,533.61 mi (7,296.14 km) |
| Ritterhude to On Top of the World Designated Place (Florida) | 4,675.81 mi (7,524.98 km) |
| Ritterhude to Onalaska (Wisconsin) | 4,235.18 mi (6,815.87 km) |
| Ritterhude to Oneida (New York) | 3,723.42 mi (5,992.26 km) |
| Ritterhude to Oneonta (New York) | 3,730.16 mi (6,003.12 km) |
| Ritterhude to Ontario (California) | 5,607.41 mi (9,024.25 km) |
| Ritterhude to Ontario (Oregon) | 4,992.40 mi (8,034.49 km) |
| Ritterhude to Opa-locka (Florida) | 4,764.85 mi (7,668.29 km) |
| Ritterhude to Opelika (Alabama) | 4,607.95 mi (7,415.78 km) |
| Ritterhude to Opelousas (Louisiana) | 4,972.46 mi (8,002.39 km) |
| Ritterhude to Orange (California) | 5,627.63 mi (9,056.80 km) |
| Ritterhude to Orange (Texas) | 5,055.98 mi (8,136.81 km) |
| Ritterhude to Orange City (Florida) | 4,645.66 mi (7,476.46 km) |
| Ritterhude to Orangeburg (South Carolina) | 4,392.46 mi (7,068.98 km) |
