| Cologno al Serio to Odessa (Texas) | 5,605.60 mi (9,021.35 km) |
| Cologno al Serio to Ogden (Utah) | 5,443.89 mi (8,761.09 km) |
| Cologno al Serio to Oildale (California) | 5,991.59 mi (9,642.54 km) |
| Cologno al Serio to Ojus (Florida) | 4,953.31 mi (7,971.58 km) |
| Cologno al Serio to Okemos (Michigan) | 4,381.45 mi (7,051.26 km) |
| Cologno al Serio to Oklahoma City (Oklahoma) | 5,235.41 mi (8,425.57 km) |
| Cologno al Serio to Okmulgee (Oklahoma) | 5,169.37 mi (8,319.29 km) |
| Cologno al Serio to Olathe (Kansas) | 4,963.20 mi (7,987.51 km) |
| Cologno al Serio to Old Jamestown (Missouri) | 4,788.36 mi (7,706.13 km) |
| Cologno al Serio to Oldsmar (Florida) | 4,969.18 mi (7,997.13 km) |
| Cologno al Serio to Olean (New York) | 4,165.55 mi (6,703.81 km) |
| Cologno al Serio to Olive Branch (Mississippi) | 4,953.29 mi (7,971.56 km) |
| Cologno al Serio to Olivehurst (California) | 5,853.64 mi (9,420.52 km) |
| Cologno al Serio to Olney (Maryland) | 4,229.70 mi (6,807.05 km) |
| Cologno al Serio to Olympia (Washington) | 5,421.54 mi (8,725.12 km) |
