| Greenock to Oxford (Alabama) | 4,004.25 mi (6,444.21 km) |
| Greenock to Oxford (Mississippi) | 4,100.65 mi (6,599.36 km) |
| Greenock to Oxford (Ohio) | 3,659.74 mi (5,889.79 km) |
| Greenock to Oxnard (California) | 5,118.68 mi (8,237.72 km) |
| Greenock to Oxon Hill (Maryland) | 3,404.72 mi (5,479.36 km) |
| Greenock to Ozark (Alabama) | 4,108.93 mi (6,612.68 km) |
| Greenock to Ozark (Missouri) | 4,094.49 mi (6,589.45 km) |
| Greenock to Pace (Florida) | 4,210.60 mi (6,776.31 km) |
| Greenock to Pacific Grove (California) | 5,057.46 mi (8,139.20 km) |
| Greenock to Pacifica (California) | 5,014.71 mi (8,070.39 km) |
| Greenock to Paducah (Kentucky) | 3,926.74 mi (6,319.47 km) |
| Greenock to Pahrump (Nevada) | 4,903.66 mi (7,891.67 km) |
| Greenock to Painesville (Ohio) | 3,422.07 mi (5,507.29 km) |
| Greenock to Palatine (Illinois) | 3,649.67 mi (5,873.57 km) |
| Greenock to Palatka (Florida) | 4,053.00 mi (6,522.67 km) |
