| Somma Vesuviana to Odessa (Texas) | 5,995.49 mi (9,648.80 km) |
| Somma Vesuviana to Ogden (Utah) | 5,846.73 mi (9,409.40 km) |
| Somma Vesuviana to Oildale (California) | 6,394.75 mi (10,291.36 km) |
| Somma Vesuviana to Ojus (Florida) | 5,291.87 mi (8,516.44 km) |
| Somma Vesuviana to Okemos (Michigan) | 4,767.61 mi (7,672.72 km) |
| Somma Vesuviana to Oklahoma City (Oklahoma) | 5,624.39 mi (9,051.57 km) |
| Somma Vesuviana to Okmulgee (Oklahoma) | 5,556.85 mi (8,942.89 km) |
| Somma Vesuviana to Olathe (Kansas) | 5,353.89 mi (8,616.25 km) |
| Somma Vesuviana to Old Jamestown (Missouri) | 5,174.24 mi (8,327.13 km) |
| Somma Vesuviana to Oldsmar (Florida) | 5,319.34 mi (8,560.64 km) |
| Somma Vesuviana to Olean (New York) | 4,543.97 mi (7,312.82 km) |
| Somma Vesuviana to Olive Branch (Mississippi) | 5,331.88 mi (8,580.82 km) |
| Somma Vesuviana to Olivehurst (California) | 6,256.73 mi (10,069.23 km) |
| Somma Vesuviana to Olney (Maryland) | 4,599.34 mi (7,401.92 km) |
| Somma Vesuviana to Olympia (Washington) | 5,821.85 mi (9,369.36 km) |
