| Giessen to Oakley (California) | 5,616.38 mi (9,038.69 km) |
| Giessen to Oakton (Virginia) | 4,054.65 mi (6,525.33 km) |
| Giessen to Oakville (Missouri) | 4,577.65 mi (7,367.02 km) |
| Giessen to Oatfield (Oregon) | 5,192.58 mi (8,356.66 km) |
| Giessen to Ocala (Florida) | 4,723.43 mi (7,601.63 km) |
| Giessen to Ocean Acres (New Jersey) | 3,894.58 mi (6,267.72 km) |
| Giessen to Ocean City (New Jersey) | 3,929.04 mi (6,323.17 km) |
| Giessen to Ocean Pines (Maryland) | 3,991.47 mi (6,423.66 km) |
| Giessen to Ocean Pointe (Hawaii) | 7,403.19 mi (11,914.29 km) |
| Giessen to Ocean Springs (Mississippi) | 4,928.91 mi (7,932.32 km) |
| Giessen to Oceanside (California) | 5,776.96 mi (9,297.12 km) |
| Giessen to Oceanside (New York) | 3,828.81 mi (6,161.87 km) |
| Giessen to Ocoee (Florida) | 4,728.11 mi (7,609.15 km) |
| Giessen to Oconomowoc (Wisconsin) | 4,281.15 mi (6,889.84 km) |
| Giessen to Odenton (Maryland) | 4,022.19 mi (6,473.09 km) |
