| Giresun to Oakley (California) | 6,841.57 mi (11,010.44 km) |
| Giresun to Oakton (Virginia) | 5,597.55 mi (9,008.39 km) |
| Giresun to Oakville (Missouri) | 6,071.36 mi (9,770.91 km) |
| Giresun to Oatfield (Oregon) | 6,357.36 mi (10,231.19 km) |
| Giresun to Ocala (Florida) | 6,281.62 mi (10,109.29 km) |
| Giresun to Ocean Acres (New Jersey) | 5,442.34 mi (8,758.60 km) |
| Giresun to Ocean City (New Jersey) | 5,477.62 mi (8,815.38 km) |
| Giresun to Ocean Pines (Maryland) | 5,541.62 mi (8,918.38 km) |
| Giresun to Ocean Pointe (Hawaii) | 8,009.76 mi (12,890.46 km) |
| Giresun to Ocean Springs (Mississippi) | 6,465.22 mi (10,404.77 km) |
| Giresun to Oceanside (California) | 7,085.44 mi (11,402.91 km) |
| Giresun to Oceanside (New York) | 5,375.02 mi (8,650.25 km) |
| Giresun to Ocoee (Florida) | 6,288.52 mi (10,120.40 km) |
| Giresun to Oconomowoc (Wisconsin) | 5,756.84 mi (9,264.73 km) |
| Giresun to Odenton (Maryland) | 5,566.12 mi (8,957.81 km) |
