| Chelles to Olympia Heights (Florida) | 4,590.09 mi (7,387.04 km) |
| Chelles to Omaha (Nebraska) | 4,491.62 mi (7,228.57 km) |
| Chelles to On Top of the World Designated Place (Florida) | 4,512.67 mi (7,262.43 km) |
| Chelles to Onalaska (Wisconsin) | 4,187.49 mi (6,739.11 km) |
| Chelles to Oneida (New York) | 3,609.95 mi (5,809.65 km) |
| Chelles to Oneonta (New York) | 3,610.37 mi (5,810.32 km) |
| Chelles to Ontario (California) | 5,632.14 mi (9,064.05 km) |
| Chelles to Ontario (Oregon) | 5,052.78 mi (8,131.67 km) |
| Chelles to Opa-locka (Florida) | 4,577.86 mi (7,367.36 km) |
| Chelles to Opelika (Alabama) | 4,475.77 mi (7,203.06 km) |
| Chelles to Opelousas (Louisiana) | 4,860.11 mi (7,821.59 km) |
| Chelles to Orange (California) | 5,652.55 mi (9,096.90 km) |
| Chelles to Orange (Texas) | 4,949.51 mi (7,965.47 km) |
| Chelles to Orange City (Florida) | 4,477.30 mi (7,205.52 km) |
| Chelles to Orangeburg (South Carolina) | 4,244.87 mi (6,831.45 km) |
