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

Distance from Katy, TX to Sundown, TX

Distance

545 mi

Time

9 hours 48 mins

Gas Cost

$50 - $97

There are 466.80 miles from Katy to Sundown in northwest direction and 545 miles (877.09 kilometers) by car, following the TX 71 route.

Katy and Sundown are 9 hours 48 mins far apart, if you drive non-stop .

This is the fastest route from Katy, TX to Sundown, TX. The halfway point is Bangs, TX.

Katy, TX and Sundown, TX are in the same time zone (CDT). Current time in both locations is 9:58 pm.

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Lowest Price Rental Cars in Katy, TX

Planning on renting a car to go from Katy, TX to Sundown, TX? 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 21.87 gallons of gas to cover the route between Katy, TX and Sundown, TX.

The estimated cost of gas to go from Katy to Sundown is $70.11.

During the route, an average car will release 428.43 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 $3.21 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Katy, TX and Sundown, TX

If you want to meet halfway between Katy, TX and Sundown, TX or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 31.719105 and -99.116730, or 31º 43' 8.778" N, 99º 7' 0.228" W. This location is 272.25 miles away from Katy, TX and Sundown, TX and it would take approximately 4 hours 54 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Bangs, TX, situated 281 miles from Katy, TX and 273 miles from Sundown, TX. It would take 4 hours 51 mins to go from Katy to Bangs and 5 hours 18 mins to go from Sundown to Bangs.