| Gorna Oryahovitsa to Orangevale (California) | 6,416.15 mi (10,325.80 km) |
| Gorna Oryahovitsa to Orchards (Washington) | 5,997.29 mi (9,651.70 km) |
| Gorna Oryahovitsa to Orcutt (California) | 6,639.70 mi (10,685.56 km) |
| Gorna Oryahovitsa to Oregon (Ohio) | 5,112.73 mi (8,228.14 km) |
| Gorna Oryahovitsa to Oregon (Wisconsin) | 5,262.83 mi (8,469.71 km) |
| Gorna Oryahovitsa to Oregon City (Oregon) | 6,020.58 mi (9,689.19 km) |
| Gorna Oryahovitsa to Orem (Utah) | 6,089.73 mi (9,800.48 km) |
| Gorna Oryahovitsa to Orinda (California) | 6,487.89 mi (10,441.25 km) |
| Gorna Oryahovitsa to Orland Park (Illinois) | 5,275.75 mi (8,490.50 km) |
| Gorna Oryahovitsa to Orlando (Florida) | 5,670.14 mi (9,125.20 km) |
| Gorna Oryahovitsa to Ormond Beach (Florida) | 5,619.87 mi (9,044.31 km) |
| Gorna Oryahovitsa to Oro Valley (Arizona) | 6,541.78 mi (10,527.97 km) |
| Gorna Oryahovitsa to Oroville (California) | 6,371.96 mi (10,254.68 km) |
| Gorna Oryahovitsa to Oshkosh (Wisconsin) | 5,179.17 mi (8,335.07 km) |
| Gorna Oryahovitsa to Oskaloosa (Iowa) | 5,458.07 mi (8,783.92 km) |
