| Wath upon Dearne to Olympia Heights (Florida) | 4,365.40 mi (7,025.43 km) |
| Wath upon Dearne to Omaha (Nebraska) | 4,175.54 mi (6,719.89 km) |
| Wath upon Dearne to On Top of the World Designated Place (Florida) | 4,268.83 mi (6,870.02 km) |
| Wath upon Dearne to Onalaska (Wisconsin) | 3,873.55 mi (6,233.88 km) |
| Wath upon Dearne to Oneida (New York) | 3,330.80 mi (5,360.41 km) |
| Wath upon Dearne to Oneonta (New York) | 3,335.23 mi (5,367.54 km) |
| Wath upon Dearne to Ontario (California) | 5,292.08 mi (8,516.78 km) |
| Wath upon Dearne to Ontario (Oregon) | 4,702.42 mi (7,567.81 km) |
| Wath upon Dearne to Opa-locka (Florida) | 4,352.81 mi (7,005.18 km) |
| Wath upon Dearne to Opelika (Alabama) | 4,209.97 mi (6,775.29 km) |
| Wath upon Dearne to Opelousas (Louisiana) | 4,582.07 mi (7,374.12 km) |
| Wath upon Dearne to Orange (California) | 5,312.46 mi (8,549.58 km) |
| Wath upon Dearne to Orange (Texas) | 4,668.01 mi (7,512.43 km) |
| Wath upon Dearne to Orange City (Florida) | 4,237.39 mi (6,819.43 km) |
| Wath upon Dearne to Orangeburg (South Carolina) | 3,989.40 mi (6,420.32 km) |
