Distance between cities › USA › Texas › Katy, TX › Distance from Katy to Extension Book Hotels

Distance from Katy, TX to Extension, LA

Distance

348 mi

Time

6 hours 49 mins

Gas Cost

$32 - $62

There are 282.05 miles from Katy to Extension in northeast direction and 348 miles (560.05 kilometers) by car, following the US-71 and US-165 route.

Katy and Extension are 6 hours 49 mins far apart, if you drive non-stop .

This is the fastest route from Katy, TX to Extension, LA. The halfway point is Lake Charles, LA.

Katy, TX and Extension, LA are in the same time zone (CDT). Current time in both locations is 5:20 pm.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Katy, TX to Extension, LA:

Lowest Price Rental Cars in Katy, TX

Planning on renting a car to go from Katy, TX to Extension, LA? Here there are some offers to rent a car in Katy, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Katy »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 14 gallons of gas to cover the route between Katy, TX and Extension, LA.

The estimated cost of gas to go from Katy to Extension is $44.84.

During the route, an average car will release 274.20 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 Katy, TX and Extension, LA

If you want to meet halfway between Katy, TX and Extension, LA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 30.241238 and -93.219872, or 30º 14' 28.4568" N, 93º 13' 11.5392" W. This location is 174.24 miles away from Katy, TX and Extension, LA and it would take approximately 3 hours 24 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Lake Charles, LA, situated 171 miles from Katy, TX and 184 miles from Extension, LA. It would take 2 hours 40 mins to go from Katy to Lake Charles and 3 hours 42 mins to go from Extension to Lake Charles.