| Santa Coloma de Farnes to Odessa (Texas) | 5,467.01 mi (8,798.31 km) |
| Santa Coloma de Farnes to Ogden (Utah) | 5,395.60 mi (8,683.37 km) |
| Santa Coloma de Farnes to Oildale (California) | 5,948.94 mi (9,573.89 km) |
| Santa Coloma de Farnes to Ojus (Florida) | 4,693.63 mi (7,553.66 km) |
| Santa Coloma de Farnes to Okemos (Michigan) | 4,234.15 mi (6,814.21 km) |
| Santa Coloma de Farnes to Oklahoma City (Oklahoma) | 5,094.81 mi (8,199.30 km) |
| Santa Coloma de Farnes to Okmulgee (Oklahoma) | 5,023.34 mi (8,084.29 km) |
| Santa Coloma de Farnes to Olathe (Kansas) | 4,830.75 mi (7,774.34 km) |
| Santa Coloma de Farnes to Old Jamestown (Missouri) | 4,638.14 mi (7,464.37 km) |
| Santa Coloma de Farnes to Oldsmar (Florida) | 4,729.61 mi (7,611.57 km) |
| Santa Coloma de Farnes to Olean (New York) | 3,994.01 mi (6,427.73 km) |
| Santa Coloma de Farnes to Olive Branch (Mississippi) | 4,778.97 mi (7,691.01 km) |
| Santa Coloma de Farnes to Olivehurst (California) | 5,839.55 mi (9,397.85 km) |
| Santa Coloma de Farnes to Olney (Maryland) | 4,034.03 mi (6,492.15 km) |
| Santa Coloma de Farnes to Olympia (Washington) | 5,448.59 mi (8,768.65 km) |
