| Chard to Olympia Heights (Florida) | 4,322.07 mi (6,955.70 km) |
| Chard to Omaha (Nebraska) | 4,209.25 mi (6,774.14 km) |
| Chard to On Top of the World Designated Place (Florida) | 4,238.92 mi (6,821.89 km) |
| Chard to Onalaska (Wisconsin) | 3,904.95 mi (6,284.41 km) |
| Chard to Oneida (New York) | 3,328.54 mi (5,356.76 km) |
| Chard to Oneonta (New York) | 3,329.52 mi (5,358.34 km) |
| Chard to Ontario (California) | 5,355.88 mi (8,619.45 km) |
| Chard to Ontario (Oregon) | 4,784.02 mi (7,699.13 km) |
| Chard to Opa-locka (Florida) | 4,309.72 mi (6,935.82 km) |
| Chard to Opelika (Alabama) | 4,196.87 mi (6,754.20 km) |
| Chard to Opelousas (Louisiana) | 4,579.21 mi (7,369.52 km) |
| Chard to Orange (California) | 5,376.30 mi (8,652.32 km) |
| Chard to Orange (Texas) | 4,668.14 mi (7,512.64 km) |
| Chard to Orange City (Florida) | 4,204.62 mi (6,766.68 km) |
| Chard to Orangeburg (South Carolina) | 3,968.07 mi (6,385.99 km) |
