| Chalons-en-Champagne to Olympia Heights (Florida) | 4,666.89 mi (7,510.63 km) |
| Chalons-en-Champagne to Omaha (Nebraska) | 4,553.95 mi (7,328.88 km) |
| Chalons-en-Champagne to On Top of the World Designated Place (Florida) | 4,587.66 mi (7,383.13 km) |
| Chalons-en-Champagne to Onalaska (Wisconsin) | 4,250.33 mi (6,840.25 km) |
| Chalons-en-Champagne to Oneida (New York) | 3,679.94 mi (5,922.29 km) |
| Chalons-en-Champagne to Oneonta (New York) | 3,681.00 mi (5,924.00 km) |
| Chalons-en-Champagne to Ontario (California) | 5,686.00 mi (9,150.73 km) |
| Chalons-en-Champagne to Ontario (Oregon) | 5,100.68 mi (8,208.74 km) |
| Chalons-en-Champagne to Opa-locka (Florida) | 4,654.63 mi (7,490.90 km) |
| Chalons-en-Champagne to Opelika (Alabama) | 4,548.08 mi (7,319.43 km) |
| Chalons-en-Champagne to Opelousas (Louisiana) | 4,930.68 mi (7,935.16 km) |
| Chalons-en-Champagne to Orange (California) | 5,706.40 mi (9,183.56 km) |
| Chalons-en-Champagne to Orange (Texas) | 5,019.53 mi (8,078.15 km) |
| Chalons-en-Champagne to Orange City (Florida) | 4,552.69 mi (7,326.85 km) |
| Chalons-en-Champagne to Orangeburg (South Carolina) | 4,318.46 mi (6,949.89 km) |
