| Barstow to Oxford (Alabama) | 1,776.04 mi (2,858.26 km) |
| Barstow to Oxford (Mississippi) | 1,559.96 mi (2,510.52 km) |
| Barstow to Oxford (Ohio) | 1,796.82 mi (2,891.71 km) |
| Barstow to Oxnard (California) | 130.00 mi (209.22 km) |
| Barstow to Oxon Hill (Maryland) | 2,215.09 mi (3,564.84 km) |
| Barstow to Ozark (Alabama) | 1,824.01 mi (2,935.46 km) |
| Barstow to Ozark (Missouri) | 1,337.81 mi (2,153.00 km) |
| Barstow to Pace (Florida) | 1,754.46 mi (2,823.53 km) |
| Barstow to Pacific Grove (California) | 299.15 mi (481.44 km) |
| Barstow to Pacifica (California) | 357.09 mi (574.68 km) |
| Barstow to Paducah (Kentucky) | 1,589.67 mi (2,558.32 km) |
| Barstow to Pahrump (Nevada) | 110.81 mi (178.33 km) |
| Barstow to Painesville (Ohio) | 1,982.66 mi (3,190.78 km) |
| Barstow to Palatine (Illinois) | 1,637.42 mi (2,635.17 km) |
| Barstow to Palatka (Florida) | 2,087.20 mi (3,359.02 km) |
