| Farnworth to Olympia Heights (Florida) | 4,321.85 mi (6,955.34 km) |
| Farnworth to Omaha (Nebraska) | 4,136.43 mi (6,656.93 km) |
| Farnworth to On Top of the World Designated Place (Florida) | 4,225.57 mi (6,800.40 km) |
| Farnworth to Onalaska (Wisconsin) | 3,834.16 mi (6,170.49 km) |
| Farnworth to Oneida (New York) | 3,288.69 mi (5,292.63 km) |
| Farnworth to Oneonta (New York) | 3,292.92 mi (5,299.44 km) |
| Farnworth to Ontario (California) | 5,256.74 mi (8,459.91 km) |
| Farnworth to Ontario (Oregon) | 4,669.70 mi (7,515.16 km) |
| Farnworth to Opa-locka (Florida) | 4,309.27 mi (6,935.09 km) |
| Farnworth to Opelika (Alabama) | 4,167.35 mi (6,706.71 km) |
| Farnworth to Opelousas (Louisiana) | 4,540.04 mi (7,306.48 km) |
| Farnworth to Orange (California) | 5,277.13 mi (8,492.72 km) |
| Farnworth to Orange (Texas) | 4,626.17 mi (7,445.10 km) |
| Farnworth to Orange City (Florida) | 4,194.05 mi (6,749.67 km) |
| Farnworth to Orangeburg (South Carolina) | 3,946.41 mi (6,351.14 km) |
