| Montevarchi to Olympia Heights (Florida) | 5,106.58 mi (8,218.25 km) |
| Montevarchi to Omaha (Nebraska) | 5,056.86 mi (8,138.23 km) |
| Montevarchi to On Top of the World Designated Place (Florida) | 5,043.69 mi (8,117.04 km) |
| Montevarchi to Onalaska (Wisconsin) | 4,752.49 mi (7,648.39 km) |
| Montevarchi to Oneida (New York) | 4,164.08 mi (6,701.43 km) |
| Montevarchi to Oneonta (New York) | 4,162.60 mi (6,699.06 km) |
| Montevarchi to Ontario (California) | 6,194.70 mi (9,969.41 km) |
| Montevarchi to Ontario (Oregon) | 5,607.14 mi (9,023.83 km) |
| Montevarchi to Opa-locka (Florida) | 5,094.69 mi (8,199.11 km) |
| Montevarchi to Opelika (Alabama) | 5,021.10 mi (8,080.67 km) |
| Montevarchi to Opelousas (Louisiana) | 5,411.54 mi (8,709.03 km) |
| Montevarchi to Orange (California) | 6,215.10 mi (10,002.23 km) |
| Montevarchi to Orange (Texas) | 5,502.60 mi (8,855.58 km) |
| Montevarchi to Orange City (Florida) | 5,005.67 mi (8,055.85 km) |
| Montevarchi to Orangeburg (South Carolina) | 4,784.48 mi (7,699.88 km) |
