| Giessen to Odessa (Texas) | 5,361.82 mi (8,629.01 km) |
| Giessen to Ogden (Utah) | 5,153.31 mi (8,293.45 km) |
| Giessen to Oildale (California) | 5,696.42 mi (9,167.51 km) |
| Giessen to Ojus (Florida) | 4,803.63 mi (7,730.70 km) |
| Giessen to Okemos (Michigan) | 4,150.64 mi (6,679.82 km) |
| Giessen to Oklahoma City (Oklahoma) | 4,994.92 mi (8,038.54 km) |
| Giessen to Okmulgee (Oklahoma) | 4,932.64 mi (7,938.32 km) |
| Giessen to Olathe (Kansas) | 4,719.34 mi (7,595.04 km) |
| Giessen to Old Jamestown (Missouri) | 4,556.67 mi (7,333.25 km) |
| Giessen to Oldsmar (Florida) | 4,801.92 mi (7,727.95 km) |
| Giessen to Olean (New York) | 3,952.61 mi (6,361.11 km) |
| Giessen to Olive Branch (Mississippi) | 4,736.53 mi (7,622.70 km) |
| Giessen to Olivehurst (California) | 5,547.29 mi (8,927.49 km) |
| Giessen to Olney (Maryland) | 4,033.55 mi (6,491.37 km) |
| Giessen to Olympia (Washington) | 5,101.85 mi (8,210.64 km) |
