| Horw to Orangevale (California) | 5,748.16 mi (9,250.77 km) |
| Horw to Orchards (Washington) | 5,372.84 mi (8,646.75 km) |
| Horw to Orcutt (California) | 5,948.25 mi (9,572.78 km) |
| Horw to Oregon (Ohio) | 4,278.50 mi (6,885.58 km) |
| Horw to Oregon (Wisconsin) | 4,453.15 mi (7,166.65 km) |
| Horw to Oregon City (Oregon) | 5,394.80 mi (8,682.10 km) |
| Horw to Orem (Utah) | 5,368.59 mi (8,639.91 km) |
| Horw to Orinda (California) | 5,822.92 mi (9,371.08 km) |
| Horw to Orland Park (Illinois) | 4,454.80 mi (7,169.31 km) |
| Horw to Orlando (Florida) | 4,792.57 mi (7,712.90 km) |
| Horw to Ormond Beach (Florida) | 4,743.40 mi (7,633.76 km) |
| Horw to Oro Valley (Arizona) | 5,779.58 mi (9,301.34 km) |
| Horw to Oroville (California) | 5,710.25 mi (9,189.76 km) |
| Horw to Oshkosh (Wisconsin) | 4,372.04 mi (7,036.12 km) |
| Horw to Oskaloosa (Iowa) | 4,652.22 mi (7,487.03 km) |
