| Pefka to Olympia Heights (Florida) | 5,721.26 mi (9,207.48 km) |
| Pefka to Omaha (Nebraska) | 5,611.03 mi (9,030.08 km) |
| Pefka to On Top of the World Designated Place (Florida) | 5,653.19 mi (9,097.93 km) |
| Pefka to Onalaska (Wisconsin) | 5,309.63 mi (8,545.02 km) |
| Pefka to Oneida (New York) | 4,753.67 mi (7,650.29 km) |
| Pefka to Oneonta (New York) | 4,754.83 mi (7,652.16 km) |
| Pefka to Ontario (California) | 6,698.98 mi (10,780.96 km) |
| Pefka to Ontario (Oregon) | 6,079.46 mi (9,783.95 km) |
| Pefka to Opa-locka (Florida) | 5,709.28 mi (9,188.20 km) |
| Pefka to Opelika (Alabama) | 5,620.87 mi (9,045.91 km) |
| Pefka to Opelousas (Louisiana) | 6,004.51 mi (9,663.33 km) |
| Pefka to Orange (California) | 6,719.19 mi (10,813.50 km) |
| Pefka to Orange (Texas) | 6,093.23 mi (9,806.11 km) |
| Pefka to Orange City (Florida) | 5,616.37 mi (9,038.68 km) |
| Pefka to Orangeburg (South Carolina) | 5,388.85 mi (8,672.52 km) |
