| Skien to Odessa (Texas) | 5,047.12 mi (8,122.56 km) |
| Skien to Ogden (Utah) | 4,739.87 mi (7,628.08 km) |
| Skien to Oildale (California) | 5,267.76 mi (8,477.64 km) |
| Skien to Ojus (Florida) | 4,682.61 mi (7,535.94 km) |
| Skien to Okemos (Michigan) | 3,881.58 mi (6,246.80 km) |
| Skien to Oklahoma City (Oklahoma) | 4,692.03 mi (7,551.09 km) |
| Skien to Okmulgee (Oklahoma) | 4,638.45 mi (7,464.87 km) |
| Skien to Olathe (Kansas) | 4,413.35 mi (7,102.60 km) |
| Skien to Old Jamestown (Missouri) | 4,278.69 mi (6,885.89 km) |
| Skien to Oldsmar (Florida) | 4,647.69 mi (7,479.73 km) |
| Skien to Olean (New York) | 3,724.72 mi (5,994.35 km) |
| Skien to Olive Branch (Mississippi) | 4,486.24 mi (7,219.91 km) |
| Skien to Olivehurst (California) | 5,093.90 mi (8,197.84 km) |
| Skien to Olney (Maryland) | 3,838.12 mi (6,176.86 km) |
| Skien to Olympia (Washington) | 4,618.50 mi (7,432.76 km) |
