| Permet to Olympia Heights (Florida) | 5,611.19 mi (9,030.34 km) |
| Permet to Omaha (Nebraska) | 5,538.93 mi (8,914.04 km) |
| Permet to On Top of the World Designated Place (Florida) | 5,549.11 mi (8,930.43 km) |
| Permet to Onalaska (Wisconsin) | 5,236.02 mi (8,426.56 km) |
| Permet to Oneida (New York) | 4,663.59 mi (7,505.33 km) |
| Permet to Oneonta (New York) | 4,663.21 mi (7,504.70 km) |
| Permet to Ontario (California) | 6,647.77 mi (10,698.55 km) |
| Permet to Ontario (Oregon) | 6,038.95 mi (9,718.75 km) |
| Permet to Opa-locka (Florida) | 5,599.34 mi (9,011.26 km) |
| Permet to Opelika (Alabama) | 5,524.57 mi (8,890.94 km) |
| Permet to Opelousas (Louisiana) | 5,912.75 mi (9,515.65 km) |
| Permet to Orange (California) | 6,668.07 mi (10,731.23 km) |
| Permet to Orange (Texas) | 6,002.92 mi (9,660.76 km) |
| Permet to Orange City (Florida) | 5,511.11 mi (8,869.27 km) |
| Permet to Orangeburg (South Carolina) | 5,289.15 mi (8,512.07 km) |
