| Horw to Oakley (California) | 5,802.53 mi (9,338.26 km) |
| Horw to Oakton (Virginia) | 4,146.42 mi (6,673.02 km) |
| Horw to Oakville (Missouri) | 4,697.95 mi (7,560.62 km) |
| Horw to Oatfield (Oregon) | 5,390.69 mi (8,675.48 km) |
| Horw to Ocala (Florida) | 4,795.30 mi (7,717.28 km) |
| Horw to Ocean Acres (New Jersey) | 3,982.43 mi (6,409.11 km) |
| Horw to Ocean City (New Jersey) | 4,015.87 mi (6,462.92 km) |
| Horw to Ocean Pines (Maryland) | 4,076.35 mi (6,560.25 km) |
| Horw to Ocean Pointe (Hawaii) | 7,639.39 mi (12,294.40 km) |
| Horw to Ocean Springs (Mississippi) | 5,022.26 mi (8,082.54 km) |
| Horw to Oceanside (California) | 5,946.50 mi (9,569.96 km) |
| Horw to Oceanside (New York) | 3,918.54 mi (6,306.29 km) |
| Horw to Ocoee (Florida) | 4,796.40 mi (7,719.06 km) |
| Horw to Oconomowoc (Wisconsin) | 4,411.25 mi (7,099.22 km) |
| Horw to Odenton (Maryland) | 4,113.18 mi (6,619.52 km) |
