| Giresun to Orangevale (California) | 6,788.46 mi (10,924.97 km) |
| Giresun to Orchards (Washington) | 6,338.09 mi (10,200.18 km) |
| Giresun to Orcutt (California) | 7,030.31 mi (11,314.18 km) |
| Giresun to Oregon (Ohio) | 5,672.09 mi (9,128.34 km) |
| Giresun to Oregon (Wisconsin) | 5,793.75 mi (9,324.14 km) |
| Giresun to Oregon City (Oregon) | 6,362.08 mi (10,238.78 km) |
| Giresun to Orem (Utah) | 6,519.49 mi (10,492.11 km) |
| Giresun to Orinda (California) | 6,855.84 mi (11,033.41 km) |
| Giresun to Orland Park (Illinois) | 5,818.76 mi (9,364.38 km) |
| Giresun to Orlando (Florida) | 6,286.05 mi (10,116.42 km) |
| Giresun to Ormond Beach (Florida) | 6,233.91 mi (10,032.51 km) |
| Giresun to Oro Valley (Arizona) | 7,006.37 mi (11,275.66 km) |
| Giresun to Oroville (California) | 6,739.20 mi (10,845.69 km) |
| Giresun to Oshkosh (Wisconsin) | 5,708.28 mi (9,186.59 km) |
| Giresun to Oskaloosa (Iowa) | 5,982.81 mi (9,628.41 km) |
