| San Giovanni Rotondo to Oakley (California) | 6,312.77 mi (10,159.43 km) |
| San Giovanni Rotondo to Oakton (Virginia) | 4,645.85 mi (7,476.77 km) |
| San Giovanni Rotondo to Oakville (Missouri) | 5,210.16 mi (8,384.94 km) |
| San Giovanni Rotondo to Oatfield (Oregon) | 5,892.40 mi (9,482.90 km) |
| San Giovanni Rotondo to Ocala (Florida) | 5,279.75 mi (8,496.93 km) |
| San Giovanni Rotondo to Ocean Acres (New Jersey) | 4,479.90 mi (7,209.70 km) |
| San Giovanni Rotondo to Ocean City (New Jersey) | 4,512.63 mi (7,262.38 km) |
| San Giovanni Rotondo to Ocean Pines (Maryland) | 4,571.74 mi (7,357.51 km) |
| San Giovanni Rotondo to Ocean Pointe (Hawaii) | 8,064.64 mi (12,978.79 km) |
| San Giovanni Rotondo to Ocean Springs (Mississippi) | 5,520.93 mi (8,885.08 km) |
| San Giovanni Rotondo to Oceanside (California) | 6,463.21 mi (10,401.53 km) |
| San Giovanni Rotondo to Oceanside (New York) | 4,417.28 mi (7,108.92 km) |
| San Giovanni Rotondo to Ocoee (Florida) | 5,278.08 mi (8,494.25 km) |
| San Giovanni Rotondo to Oconomowoc (Wisconsin) | 4,926.67 mi (7,928.71 km) |
| San Giovanni Rotondo to Odenton (Maryland) | 4,612.21 mi (7,422.64 km) |
