| Schwalmstadt to Olympia Heights (Florida) | 4,839.16 mi (7,787.87 km) |
| Schwalmstadt to Omaha (Nebraska) | 4,644.04 mi (7,473.86 km) |
| Schwalmstadt to On Top of the World Designated Place (Florida) | 4,746.84 mi (7,639.31 km) |
| Schwalmstadt to Onalaska (Wisconsin) | 4,343.63 mi (6,990.39 km) |
| Schwalmstadt to Oneida (New York) | 3,810.81 mi (6,132.91 km) |
| Schwalmstadt to Oneonta (New York) | 3,815.44 mi (6,140.35 km) |
| Schwalmstadt to Ontario (California) | 5,735.80 mi (9,230.88 km) |
| Schwalmstadt to Ontario (Oregon) | 5,127.84 mi (8,252.46 km) |
| Schwalmstadt to Opa-locka (Florida) | 4,826.66 mi (7,767.77 km) |
| Schwalmstadt to Opelika (Alabama) | 4,690.19 mi (7,548.14 km) |
| Schwalmstadt to Opelousas (Louisiana) | 5,061.92 mi (8,146.37 km) |
| Schwalmstadt to Orange (California) | 5,756.09 mi (9,263.53 km) |
| Schwalmstadt to Orange (Texas) | 5,147.49 mi (8,284.08 km) |
| Schwalmstadt to Orange City (Florida) | 4,714.67 mi (7,587.53 km) |
| Schwalmstadt to Orangeburg (South Carolina) | 4,468.92 mi (7,192.04 km) |
