| Wittlich to Olympia Heights (Florida) | 4,758.67 mi (7,658.33 km) |
| Wittlich to Omaha (Nebraska) | 4,602.82 mi (7,407.52 km) |
| Wittlich to On Top of the World Designated Place (Florida) | 4,672.61 mi (7,519.83 km) |
| Wittlich to Onalaska (Wisconsin) | 4,300.70 mi (6,921.31 km) |
| Wittlich to Oneida (New York) | 3,749.67 mi (6,034.51 km) |
| Wittlich to Oneonta (New York) | 3,752.60 mi (6,039.23 km) |
| Wittlich to Ontario (California) | 5,714.39 mi (9,196.41 km) |
| Wittlich to Ontario (Oregon) | 5,116.90 mi (8,234.86 km) |
| Wittlich to Opa-locka (Florida) | 4,746.28 mi (7,638.40 km) |
| Wittlich to Opelika (Alabama) | 4,624.12 mi (7,441.80 km) |
| Wittlich to Opelousas (Louisiana) | 5,001.21 mi (8,048.67 km) |
| Wittlich to Orange (California) | 5,734.74 mi (9,229.17 km) |
| Wittlich to Orange (Texas) | 5,088.39 mi (8,188.97 km) |
| Wittlich to Orange City (Florida) | 4,639.08 mi (7,465.88 km) |
| Wittlich to Orangeburg (South Carolina) | 4,398.76 mi (7,079.11 km) |
