| Schalksmuhle to Olympia Heights (Florida) | 4,763.09 mi (7,665.44 km) |
| Schalksmuhle to Omaha (Nebraska) | 4,573.20 mi (7,359.85 km) |
| Schalksmuhle to On Top of the World Designated Place (Florida) | 4,670.91 mi (7,517.11 km) |
| Schalksmuhle to Onalaska (Wisconsin) | 4,272.35 mi (6,875.69 km) |
| Schalksmuhle to Oneida (New York) | 3,736.08 mi (6,012.65 km) |
| Schalksmuhle to Oneonta (New York) | 3,740.49 mi (6,019.73 km) |
| Schalksmuhle to Ontario (California) | 5,670.77 mi (9,126.22 km) |
| Schalksmuhle to Ontario (Oregon) | 5,066.42 mi (8,153.62 km) |
| Schalksmuhle to Opa-locka (Florida) | 4,750.59 mi (7,645.34 km) |
| Schalksmuhle to Opelika (Alabama) | 4,614.91 mi (7,426.97 km) |
| Schalksmuhle to Opelousas (Louisiana) | 4,987.32 mi (8,026.31 km) |
| Schalksmuhle to Orange (California) | 5,691.08 mi (9,158.91 km) |
| Schalksmuhle to Orange (Texas) | 5,073.13 mi (8,164.41 km) |
| Schalksmuhle to Orange City (Florida) | 4,638.68 mi (7,465.23 km) |
| Schalksmuhle to Orangeburg (South Carolina) | 4,393.25 mi (7,070.25 km) |
