| Tomball to Owosso (Michigan) | 1,092.22 mi (1,757.77 km) |
| Tomball to Oxford (Alabama) | 620.98 mi (999.37 km) |
| Tomball to Oxford (Mississippi) | 461.85 mi (743.28 km) |
| Tomball to Oxford (Ohio) | 894.99 mi (1,440.35 km) |
| Tomball to Oxnard (California) | 1,403.88 mi (2,259.32 km) |
| Tomball to Oxon Hill (Maryland) | 1,217.08 mi (1,958.69 km) |
| Tomball to Ozark (Alabama) | 599.14 mi (964.22 km) |
| Tomball to Ozark (Missouri) | 499.11 mi (803.25 km) |
| Tomball to Pace (Florida) | 505.13 mi (812.93 km) |
| Tomball to Pacific Grove (California) | 1,577.93 mi (2,539.44 km) |
| Tomball to Pacifica (California) | 1,619.61 mi (2,606.51 km) |
| Tomball to Paducah (Kentucky) | 626.90 mi (1,008.90 km) |
| Tomball to Pahrump (Nevada) | 1,249.47 mi (2,010.83 km) |
| Tomball to Painesville (Ohio) | 1,133.58 mi (1,824.31 km) |
| Tomball to Palatine (Illinois) | 931.20 mi (1,498.62 km) |
