| Geldern to Odessa (Texas) | 5,241.65 mi (8,435.63 km) |
| Geldern to Ogden (Utah) | 5,036.86 mi (8,106.04 km) |
| Geldern to Oildale (California) | 5,580.83 mi (8,981.48 km) |
| Geldern to Ojus (Florida) | 4,688.75 mi (7,545.82 km) |
| Geldern to Okemos (Michigan) | 4,030.42 mi (6,486.33 km) |
| Geldern to Oklahoma City (Oklahoma) | 4,874.69 mi (7,845.06 km) |
| Geldern to Okmulgee (Oklahoma) | 4,812.39 mi (7,744.79 km) |
| Geldern to Olathe (Kansas) | 4,599.15 mi (7,401.62 km) |
| Geldern to Old Jamestown (Missouri) | 4,436.42 mi (7,139.73 km) |
| Geldern to Oldsmar (Florida) | 4,685.19 mi (7,540.09 km) |
| Geldern to Olean (New York) | 3,832.87 mi (6,168.42 km) |
| Geldern to Olive Branch (Mississippi) | 4,616.56 mi (7,429.64 km) |
| Geldern to Olivehurst (California) | 5,434.02 mi (8,745.21 km) |
| Geldern to Olney (Maryland) | 3,914.70 mi (6,300.11 km) |
| Geldern to Olympia (Washington) | 4,992.51 mi (8,034.66 km) |
