Distance between cities › USA › Texas › Tomball, TX › Distance from Tomball to Hydro Book Hotels

Distance from Tomball, TX to Hydro, OK

Distance

494 mi

Time

8 hours 43 mins

Gas Cost

$45 - $88

There are 414.05 miles from Tomball to Hydro in northwest direction and 494 miles (795.02 kilometers) by car, following the I-35 and US-77 route.

Tomball and Hydro are 8 hours 43 mins far apart, if you drive non-stop .

This is the fastest route from Tomball, TX to Hydro, OK. The halfway point is Roanoke, TX.

Tomball, TX and Hydro, OK are in the same time zone (CDT). Current time in both locations is 10:09 pm.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Tomball, TX to Hydro, OK:

Lowest Price Rental Cars in Tomball, TX

Planning on renting a car to go from Tomball, TX to Hydro, OK? Here there are some offers to rent a car in Tomball, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Tomball »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 19.83 gallons of gas to cover the route between Tomball, TX and Hydro, OK.

The estimated cost of gas to go from Tomball to Hydro is $63.53.

During the route, an average car will release 388.46 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Tomball, TX and Hydro, OK

If you want to meet halfway between Tomball, TX and Hydro, OK or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 33.010334 and -97.287086, or 33º 0' 37.2024" N, 97º 17' 13.5096" W. This location is 246.85 miles away from Tomball, TX and Hydro, OK and it would take approximately 4 hours 21 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Roanoke, TX, situated 255 miles from Tomball, TX and 248 miles from Hydro, OK. It would take 4 hours 8 mins to go from Tomball to Roanoke and 3 hours 53 mins to go from Hydro to Roanoke.

Major City Closest to Halfway Point

The major city closest to the halfway point between Tomball, TX and Hydro, OK is Fort Worth, TX, situated 235 miles from Tomball, TX and 265 miles from Hydro, OK. It would take 3 hours 48 mins to go from Tomball to and 4 hours 7 mins to go from Hydro to Fort Worth.