| Somma Vesuviana to Oakley (California) | 6,324.56 mi (10,178.40 km) |
| Somma Vesuviana to Oakton (Virginia) | 4,619.62 mi (7,434.57 km) |
| Somma Vesuviana to Oakville (Missouri) | 5,193.35 mi (8,357.89 km) |
| Somma Vesuviana to Oatfield (Oregon) | 5,910.82 mi (9,512.55 km) |
| Somma Vesuviana to Ocala (Florida) | 5,245.55 mi (8,441.90 km) |
| Somma Vesuviana to Ocean Acres (New Jersey) | 4,452.67 mi (7,165.88 km) |
| Somma Vesuviana to Ocean City (New Jersey) | 4,484.99 mi (7,217.90 km) |
| Somma Vesuviana to Ocean Pines (Maryland) | 4,543.32 mi (7,311.76 km) |
| Somma Vesuviana to Ocean Pointe (Hawaii) | 8,112.92 mi (13,056.48 km) |
| Somma Vesuviana to Ocean Springs (Mississippi) | 5,493.69 mi (8,841.24 km) |
| Somma Vesuviana to Oceanside (California) | 6,466.45 mi (10,406.75 km) |
| Somma Vesuviana to Oceanside (New York) | 4,390.82 mi (7,066.34 km) |
| Somma Vesuviana to Ocoee (Florida) | 5,242.71 mi (8,437.33 km) |
| Somma Vesuviana to Oconomowoc (Wisconsin) | 4,914.05 mi (7,908.40 km) |
| Somma Vesuviana to Odenton (Maryland) | 4,585.78 mi (7,380.11 km) |
