| Karlsfeld to Olympia Heights (Florida) | 4,992.53 mi (8,034.70 km) |
| Karlsfeld to Omaha (Nebraska) | 4,840.82 mi (7,790.54 km) |
| Karlsfeld to On Top of the World Designated Place (Florida) | 4,909.67 mi (7,901.35 km) |
| Karlsfeld to Onalaska (Wisconsin) | 4,539.15 mi (7,305.06 km) |
| Karlsfeld to Oneida (New York) | 3,989.94 mi (6,421.20 km) |
| Karlsfeld to Oneonta (New York) | 3,992.72 mi (6,425.66 km) |
| Karlsfeld to Ontario (California) | 5,943.54 mi (9,565.20 km) |
| Karlsfeld to Ontario (Oregon) | 5,338.83 mi (8,592.02 km) |
| Karlsfeld to Opa-locka (Florida) | 4,980.21 mi (8,014.88 km) |
| Karlsfeld to Opelika (Alabama) | 4,863.66 mi (7,827.30 km) |
| Karlsfeld to Opelousas (Louisiana) | 5,241.47 mi (8,435.34 km) |
| Karlsfeld to Orange (California) | 5,963.85 mi (9,597.90 km) |
| Karlsfeld to Orange (Texas) | 5,328.75 mi (8,575.79 km) |
| Karlsfeld to Orange City (Florida) | 4,875.56 mi (7,846.46 km) |
| Karlsfeld to Orangeburg (South Carolina) | 4,637.31 mi (7,463.03 km) |
