| Horw to Odessa (Texas) | 5,493.51 mi (8,840.96 km) |
| Horw to Ogden (Utah) | 5,325.89 mi (8,571.20 km) |
| Horw to Oildale (California) | 5,873.30 mi (9,452.16 km) |
| Horw to Ojus (Florida) | 4,859.85 mi (7,821.17 km) |
| Horw to Okemos (Michigan) | 4,271.10 mi (6,873.67 km) |
| Horw to Oklahoma City (Oklahoma) | 5,123.74 mi (8,245.87 km) |
| Horw to Okmulgee (Oklahoma) | 5,058.30 mi (8,140.55 km) |
| Horw to Olathe (Kansas) | 4,850.92 mi (7,806.80 km) |
| Horw to Old Jamestown (Missouri) | 4,678.02 mi (7,528.54 km) |
| Horw to Oldsmar (Florida) | 4,871.72 mi (7,840.28 km) |
| Horw to Olean (New York) | 4,058.28 mi (6,531.17 km) |
| Horw to Olive Branch (Mississippi) | 4,845.67 mi (7,798.35 km) |
| Horw to Olivehurst (California) | 5,734.74 mi (9,229.17 km) |
| Horw to Olney (Maryland) | 4,125.70 mi (6,639.67 km) |
| Horw to Olympia (Washington) | 5,302.61 mi (8,533.73 km) |
