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

Distance from Katy, TX to San Augustine, TX

Distance

193 mi

Time

3 hours 41 mins

Gas Cost

$18 - $34

There are 157.96 miles from Katy to San Augustine in northeast direction and 193 miles (310.60 kilometers) by car, following the TX 99 Toll route.

Katy and San Augustine are 3 hours 41 mins far apart, if you drive non-stop .

This is the fastest route from Katy, TX to San Augustine, TX. The halfway point is Goodrich, TX.

Katy, TX and San Augustine, TX are in the same time zone (CDT). Current time in both locations is 9:55 pm.

Any questions or tips to share?

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

Lowest Price Rental Cars in Katy, TX

Planning on renting a car to go from Katy, TX to San Augustine, 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 7.76 gallons of gas to cover the route between Katy, TX and San Augustine, TX.

The estimated cost of gas to go from Katy to San Augustine is $24.87.

During the route, an average car will release 151.98 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 San Augustine, TX

If you want to meet halfway between Katy, TX and San Augustine, TX or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 30.655037 and -94.949577, or 30º 39' 18.1332" N, 94º 56' 58.4772" W. This location is 96.58 miles away from Katy, TX and San Augustine, TX and it would take approximately 1 hour 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Goodrich, TX, situated 92 miles from Katy, TX and 99 miles from San Augustine, TX. It would take 1 hour 41 mins to go from Katy to Goodrich and 1 hour 49 mins to go from San Augustine to Goodrich.