| Colleferro to Orangevale (California) | 6,179.90 mi (9,945.58 km) |
| Colleferro to Orchards (Washington) | 5,805.12 mi (9,342.44 km) |
| Colleferro to Orcutt (California) | 6,378.46 mi (10,265.14 km) |
| Colleferro to Oregon (Ohio) | 4,676.23 mi (7,525.66 km) |
| Colleferro to Oregon (Wisconsin) | 4,862.06 mi (7,824.73 km) |
| Colleferro to Oregon City (Oregon) | 5,827.11 mi (9,377.83 km) |
| Colleferro to Orem (Utah) | 5,796.44 mi (9,328.47 km) |
| Colleferro to Orinda (California) | 6,254.74 mi (10,066.03 km) |
| Colleferro to Orland Park (Illinois) | 4,858.88 mi (7,819.61 km) |
| Colleferro to Orlando (Florida) | 5,145.97 mi (8,281.63 km) |
| Colleferro to Ormond Beach (Florida) | 5,098.99 mi (8,206.03 km) |
| Colleferro to Oro Valley (Arizona) | 6,199.83 mi (9,977.67 km) |
| Colleferro to Oroville (California) | 6,142.24 mi (9,884.97 km) |
| Colleferro to Oshkosh (Wisconsin) | 4,782.15 mi (7,696.13 km) |
| Colleferro to Oskaloosa (Iowa) | 5,062.10 mi (8,146.67 km) |
