| Hagerstown to Orangevale (California) | 2,308.10 mi (3,714.52 km) |
| Hagerstown to Orchards (Washington) | 2,283.92 mi (3,675.61 km) |
| Hagerstown to Orcutt (California) | 2,349.10 mi (3,780.51 km) |
| Hagerstown to Oregon (Ohio) | 329.98 mi (531.06 km) |
| Hagerstown to Oregon (Wisconsin) | 646.23 mi (1,040.01 km) |
| Hagerstown to Oregon City (Oregon) | 2,289.42 mi (3,684.46 km) |
| Hagerstown to Orem (Utah) | 1,788.66 mi (2,878.58 km) |
| Hagerstown to Orinda (California) | 2,373.69 mi (3,820.09 km) |
| Hagerstown to Orland Park (Illinois) | 548.50 mi (882.73 km) |
| Hagerstown to Orlando (Florida) | 798.35 mi (1,284.82 km) |
| Hagerstown to Ormond Beach (Florida) | 739.85 mi (1,190.67 km) |
| Hagerstown to Oro Valley (Arizona) | 1,911.95 mi (3,076.98 km) |
| Hagerstown to Oroville (California) | 2,311.18 mi (3,719.48 km) |
| Hagerstown to Oshkosh (Wisconsin) | 634.20 mi (1,020.65 km) |
| Hagerstown to Oskaloosa (Iowa) | 791.46 mi (1,273.73 km) |
