| Kelsterbach to Olympia Heights (Florida) | 4,827.35 mi (7,768.87 km) |
| Kelsterbach to Omaha (Nebraska) | 4,657.45 mi (7,495.44 km) |
| Kelsterbach to On Top of the World Designated Place (Florida) | 4,739.47 mi (7,627.44 km) |
| Kelsterbach to Onalaska (Wisconsin) | 4,356.02 mi (7,010.34 km) |
| Kelsterbach to Oneida (New York) | 3,812.06 mi (6,134.91 km) |
| Kelsterbach to Oneonta (New York) | 3,815.60 mi (6,140.61 km) |
| Kelsterbach to Ontario (California) | 5,760.23 mi (9,270.20 km) |
| Kelsterbach to Ontario (Oregon) | 5,157.56 mi (8,300.29 km) |
| Kelsterbach to Opa-locka (Florida) | 4,814.94 mi (7,748.89 km) |
| Kelsterbach to Opelika (Alabama) | 4,688.33 mi (7,545.14 km) |
| Kelsterbach to Opelousas (Louisiana) | 5,063.57 mi (8,149.03 km) |
| Kelsterbach to Orange (California) | 5,780.55 mi (9,302.90 km) |
| Kelsterbach to Orange (Texas) | 5,150.17 mi (8,288.40 km) |
| Kelsterbach to Orange City (Florida) | 4,706.35 mi (7,574.14 km) |
| Kelsterbach to Orangeburg (South Carolina) | 4,464.31 mi (7,184.62 km) |
