Trip from Houston, TX to Mercedes, TX

Drive Time

6h 28m

Distance

340.2 mi

Route Type

Turn-heavy local drive

Long day trip

Trip Overview

The drive from Houston, TX to Mercedes, TX covers 340.2 miles and takes about 6h 28m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on Congress Street, Smith Street, Southwest Freeway for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $50.61 one way before food or hotel costs.

Trip Pace

Same-day drive is realistic

A same-day return is possible, but it will make for a full day on the road.

Break Rhythm

1 planned break

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

170.1 miles from Houston, TX

A natural place for your longest stop of the day.

Drive Character

Expect a 6h 28m drive with frequent turns across 340.2 miles of local and secondary roads.

This route has more turning and local-road decision points than a simple highway run.

There are about 28 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Congress Street is one of the defining roads on this drive.

Main Roads

Road	Distance	Duration
Congress Street	0 mi	0m
Smith Street	0 mi	0m
Southwest Freeway	0 mi	0m
Spur 10	0 mi	0m
Southwest Freeway Frontage Road	0 mi	0m
US 59	0 mi	0m
Highway 59	0 mi	0m
Spur 91	0 mi	0m

Longest stretch: Congress Street — 0 mi, about 0m

Step-by-Step Directions

1

Start on Louisiana Street

2

Turn left onto Congress Street

3

Turn left onto Smith Street

4

Merge slight left onto Southwest Freeway

5

Take the exit slight right toward Spur 10: Cottonwood, Church Road, Hartledge Road

6

Turn straight onto Southwest Freeway Frontage Road

7

Continue on Southwest Freeway Frontage Road

8

Continue on US 59 Southbound Frontage Road

9

Take the ramp straight

10

Merge slight left

11

Keep slight left

12

Take the exit slight right

13

Continue on US Highway 59

14

Keep slight left to continue on Spur 91

15

Merge slight right onto US Highway 77 South

16

Turn straight onto Alamo Street

17

Take the exit straight toward I 37, US 77, I 69E

18

Keep slight left

19

Merge slight right

20

Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville

21

Keep slight left to continue on U.S. Highway 77

22

Keep slight left to continue on U.S. Highway 77

23

Take the exit slight right toward I 2 West, US 83: McAllen

24

Continue straight

25

Take the exit slight right toward FM 491: Texas Avenue

26

Turn straight onto East Expressway 83

27

Turn left onto North Texas Avenue

28

Arrive at your destination

When to Leave

Morning Departure

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Evening Departure

This is a long drive — plan for a morning departure or consider splitting it into two days.

You can normally do this drive in one day.

Plan roughly 1 meaningful break for fuel, food, and rest.

The halfway point lands around 170.1 miles from Houston, TX.

This is a comfortable same-day trip.

Drive Plan

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 80 miles

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 170.1 miles

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Last hour of driving

Traffic, exits, and arrival timing usually matter more near Mercedes, TX than in the middle of the route.

Before You Leave

+

Open the route before leaving Houston, TX so your first major turns are already loaded.

+

Leave with enough water and a charging cable within reach, not packed away.

+

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

Trip Strategy

Day 1

Settle into the route from Houston, TX

This is one driving day of about 340.2 miles and 6h 28m.

Your first comfortable stop window is around 80 miles from Houston, TX.

This route can stay practical as a one-day drive if traffic stays reasonable.

Plan about 1 real break rather than only quick fuel stops.

Best Stop Towns on This Route

These towns line up with the pace of this drive and give you clearer places to stop with a purpose.

Late stop town

Meal stop

Corpus Christi, TX

170 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Travel Advice

Arrival Notes

The final approach into Mercedes, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Mercedes, TX.

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

Stops Along the Way

Halfway Point

Midpoint

About 170.1 mi from Houston, TX

Rosenberg, TX

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

Corpus Christi, TX

Meal break

The midpoint is around 170.1 miles from Houston, TX, which is a good place for a longer meal and fuel stop.

These stop ideas are pacing suggestions for the drive, so the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Fuel Type	$/gal	One Way	Round Trip
regular	$3.78	$50.61	$101.23
midgrade	$4.25	$56.95	$113.90
premium	$4.59	$61.49	$122.98
diesel	$3.99	$53.48	$106.96

Based on 25.4 MPG average. Estimated CO2 emission: 119 kg one way.

Frequently Asked Questions

The drive from Houston, TX to Mercedes, TX covers 340.2 miles and takes about 6h 28m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Congress Street, Smith Street, Southwest Freeway. Expect a mix of highway and local road driving.

This is a comfortable same-day trip.

The midpoint is about 170.1 miles from Houston, TX. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $50.61 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.