| San Martino Buon Albergo to Olympia Heights (Florida) | 5,040.15 mi (8,111.34 km) |
| San Martino Buon Albergo to Omaha (Nebraska) | 4,953.50 mi (7,971.89 km) |
| San Martino Buon Albergo to On Top of the World Designated Place (Florida) | 4,969.73 mi (7,998.00 km) |
| San Martino Buon Albergo to Onalaska (Wisconsin) | 4,649.91 mi (7,483.30 km) |
| San Martino Buon Albergo to Oneida (New York) | 4,074.84 mi (6,557.83 km) |
| San Martino Buon Albergo to Oneonta (New York) | 4,074.88 mi (6,557.89 km) |
| San Martino Buon Albergo to Ontario (California) | 6,080.04 mi (9,784.87 km) |
| San Martino Buon Albergo to Ontario (Oregon) | 5,486.91 mi (8,830.33 km) |
| San Martino Buon Albergo to Opa-locka (Florida) | 5,028.09 mi (8,091.93 km) |
| San Martino Buon Albergo to Opelika (Alabama) | 4,938.48 mi (7,947.72 km) |
| San Martino Buon Albergo to Opelousas (Louisiana) | 5,324.58 mi (8,569.09 km) |
| San Martino Buon Albergo to Orange (California) | 6,100.41 mi (9,817.66 km) |
| San Martino Buon Albergo to Orange (Texas) | 5,414.33 mi (8,713.52 km) |
| San Martino Buon Albergo to Orange City (Florida) | 4,933.14 mi (7,939.11 km) |
| San Martino Buon Albergo to Orangeburg (South Carolina) | 4,705.47 mi (7,572.72 km) |
