| Elk Grove to Olympia Heights (Florida) | 2,533.87 mi (4,077.88 km) |
| Elk Grove to Omaha (Nebraska) | 1,353.30 mi (2,177.92 km) |
| Elk Grove to On Top of the World Designated Place (Florida) | 2,317.17 mi (3,729.12 km) |
| Elk Grove to Onalaska (Wisconsin) | 1,605.15 mi (2,583.25 km) |
| Elk Grove to Oneida (New York) | 2,385.05 mi (3,838.37 km) |
| Elk Grove to Oneonta (New York) | 2,421.44 mi (3,896.93 km) |
| Elk Grove to Ontario (California) | 368.41 mi (592.89 km) |
| Elk Grove to Ontario (Oregon) | 450.08 mi (724.33 km) |
| Elk Grove to Opa-locka (Florida) | 2,532.22 mi (4,075.21 km) |
| Elk Grove to Opelika (Alabama) | 2,049.66 mi (3,298.61 km) |
| Elk Grove to Opelousas (Louisiana) | 1,747.23 mi (2,811.89 km) |
| Elk Grove to Orange (California) | 375.55 mi (604.39 km) |
| Elk Grove to Orange (Texas) | 1,670.39 mi (2,688.23 km) |
| Elk Grove to Orange City (Florida) | 2,376.39 mi (3,824.43 km) |
| Elk Grove to Orangeburg (South Carolina) | 2,273.11 mi (3,658.21 km) |
