| Fermo to Odessa (Texas) | 5,864.97 mi (9,438.77 km) |
| Fermo to Ogden (Utah) | 5,699.04 mi (9,171.71 km) |
| Fermo to Oildale (California) | 6,245.67 mi (10,051.43 km) |
| Fermo to Ojus (Florida) | 5,197.40 mi (8,364.41 km) |
| Fermo to Okemos (Michigan) | 4,640.36 mi (7,467.94 km) |
| Fermo to Oklahoma City (Oklahoma) | 5,494.70 mi (8,842.86 km) |
| Fermo to Okmulgee (Oklahoma) | 5,428.50 mi (8,736.33 km) |
| Fermo to Olathe (Kansas) | 5,222.61 mi (8,404.98 km) |
| Fermo to Old Jamestown (Missouri) | 5,047.26 mi (8,122.78 km) |
| Fermo to Oldsmar (Florida) | 5,217.78 mi (8,397.21 km) |
| Fermo to Olean (New York) | 4,422.93 mi (7,118.02 km) |
| Fermo to Olive Branch (Mississippi) | 5,210.81 mi (8,385.99 km) |
| Fermo to Olivehurst (California) | 6,103.85 mi (9,823.20 km) |
| Fermo to Olney (Maryland) | 4,484.72 mi (7,217.46 km) |
| Fermo to Olympia (Washington) | 5,664.82 mi (9,116.65 km) |
