| Coatesville to Olympia Heights (Florida) | 1,019.24 mi (1,640.31 km) |
| Coatesville to Omaha (Nebraska) | 1,062.30 mi (1,709.61 km) |
| Coatesville to On Top of the World Designated Place (Florida) | 836.31 mi (1,345.91 km) |
| Coatesville to Onalaska (Wisconsin) | 834.09 mi (1,342.35 km) |
| Coatesville to Oneida (New York) | 213.79 mi (344.07 km) |
| Coatesville to Oneonta (New York) | 175.11 mi (281.81 km) |
| Coatesville to Ontario (California) | 2,320.13 mi (3,733.89 km) |
| Coatesville to Ontario (Oregon) | 2,109.20 mi (3,394.43 km) |
| Coatesville to Opa-locka (Florida) | 1,006.22 mi (1,619.35 km) |
| Coatesville to Opelika (Alabama) | 733.38 mi (1,180.26 km) |
| Coatesville to Opelousas (Louisiana) | 1,123.53 mi (1,808.14 km) |
| Coatesville to Orange (California) | 2,337.82 mi (3,762.36 km) |
| Coatesville to Orange (Texas) | 1,218.57 mi (1,961.11 km) |
| Coatesville to Orange City (Florida) | 824.14 mi (1,326.32 km) |
| Coatesville to Orangeburg (South Carolina) | 528.26 mi (850.15 km) |
