Spanning 540.4 miles across the Texas Great Plains, this journey from Irving to Mercedes takes approximately 9 hours and 25 minutes of pure driving time. Given the length, it is best to plan for a 2-day trip to avoid fatigue, rather than attempting it in a single long haul. You will navigate via the South R L Thornton Freeway, TX 130 Toll, and South Nueces Street to make your way south. Budgeting roughly $83 for fuel will keep you moving efficiently throughout the trek. While the route is straightforward, splitting the drive into two days allows you to handle the distance with much more ease. Ultimately, this is a practical transit route that moves you steadily from the northern to the southern reaches of the state.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
270.2 miles from Irving, TX
A natural place for your longest stop of the day
, about 4h 35m into the drive
.
Step-by-step road directions between Irving, TX and Mercedes, TX.
1
Start on North Ohio Street
436 ft·24 sec·North Ohio Street
2
Turn left onto West 2nd Street
0.7 mi·1 min·West 2nd Street
3
Turn straight onto TX 356
0.9 mi·1 min·East Irving Boulevard
4
Turn slight right
393 ft·17 sec
5
Turn slight right onto South Loop 12
187 ft·3 sec·South Loop 12
6
Take the ramp
410 ft·10 sec
Toward Loop 12 South
7
Merge onto Loop 12
5.3 mi·5 min·South Walton Walker Boulevard
Use the straight / slight right lanes.
8
Keep slight left at fork onto Loop 12
1.4 mi·1 min·South Walton Walker Boulevard
Toward Loop 12 SouthUse the slight left lane.
9
Turn slight right onto Duncanville Road
3.2 mi·6 min·Duncanville Road
Use the left lane.
10
Turn left onto West Interstate 20
0.2 mi·21 sec·West Interstate 20
Use the left lane.
11
Take the ramp
0.3 mi·35 sec
Toward I 20 East
12
Merge onto I 20
4.6 mi·4 min·Lyndon B Johnson Freeway
Use the straight / slight right lanes.
13
Take the exit
0.4 mi·44 sec
Exit 467BToward I 35E South: WacoUse the straight / slight right lanes.
14
Merge onto I 35E
81 mi·1 hr 22 min·South R L Thornton Freeway
Use the straight / slight right lanes.
15
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
16
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
17
Keep slight left at fork onto I 35
26 mi·26 min·I 35
Use the straight / slight right lanes.
18
Take the exit
0.7 mi·55 sec
Exit 265Toward TX 130 Toll South: San AntonioUse the slight right lane.
19
Continue on TX 130 Toll
86 mi·1 hr 19 min·TX 130 Toll
Use the straight / slight right lanes.
20
Keep slight right at fork
0.6 mi·1 min
Toward I 10 West: San AntonioUse the slight left / slight right lanes.
21
Merge onto I 10; TX 130
11 mi·11 min·I 10; TX 130
Use the straight / slight right lanes.
22
Continue on I 10; US 90; TX 130
9.4 mi·9 min·I 10; US 90; TX 130
Use the straight / slight right lanes.
23
Keep slight left at fork onto I 10; US 90; TX 130
12 mi·12 min·I 10; US 90; TX 130
Use the straight / slight right lanes.
24
Keep slight right at fork onto I 410
1.4 mi·1 min·Connally Loop
Use the straight / slight right lanes.
25
Merge onto I 410; TX 130
6.7 mi·7 min·Connally Loop
Use the straight / slight right lanes.
26
Take the exit
0.2 mi·28 sec
Exit 41Toward I 37, US 281 North: San Antonio, Corpus ChristiUse the straight / slight right lanes.
27
Keep slight left at fork
0.5 mi·1 min
Toward I 37 South: Corpus ChristiUse the slight left / slight right lanes.
28
Merge onto I 37
60 mi·1 hr 1 min·I 37
Use the straight / slight right lanes.
29
Take the exit onto US 281 South
15 mi·19 min·US 281 South
Toward US 281 SouthUse the straight / slight right lanes.
30
Keep slight left at fork onto US 281
66 mi·1 hr 10 min·South Nueces Street
31
Keep slight left at fork onto I 69C; US 281
9.5 mi·10 min·I 69C; US 281
32
Keep slight left at fork onto I 69C; US 281
56 mi·58 min·Falfurrias Expressway
Use the straight / right lanes.
33
Keep slight left at fork onto I 69C; US 281
18 mi·20 min·I 69C; US 281
Use the straight / slight right lanes.
34
Merge onto I 2 East; US 83 East
0.5 mi·33 sec·I 2 East; US 83 East
35
Continue on I 2; US 83
16 mi·17 min·I 2; US 83
Use the straight / slight right lanes.
36
Take the exit
0.4 mi·48 sec
Exit 163BToward FM 491: Texas AvenueUse the slight right lane.
37
Turn straight onto Expressway 83
0.1 mi·17 sec·Expressway 83
38
Turn right onto FM 491
0.4 mi·46 sec·North Texas Avenue
39
Arrive at destination
South Texas Avenue
Trip Plan
To manage the 540.4-mile distance successfully, try to break your journey into at least two distinct segments. Planning for two strategic stops will help you stay alert and comfortable behind the wheel. Since you are looking at a 9-hour and 25-minute commitment, consider departing early in the morning to beat urban traffic congestion near your starting point in Irving. Keep a close eye on your fuel gauge, especially when navigating the long 86.1-mile stretch on TX 130 Toll, as service areas can be spaced out. By pacing yourself and utilizing those two planned stops, you can navigate the transition through the Texas landscape safely and effectively.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 270.2 miles from Irving, TX, or about 4h 35m into the drive.
The longest continuous stretch on this route runs about 86.1 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 119 miles or 2h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 270.2 miles or 4h 35m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 270.2 miles or 4h 35m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 8h 19m
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 Irving, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Irving, TX
Aim for roughly 270 miles and 4.7 hours of wheel time on this day.
Day 2
Finish the approach into Mercedes, TX
Aim for roughly 270 miles and 4.7 hours of wheel time on this day.
Your first comfortable stop window is around 119 miles from Irving, TX.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on TX 130 Toll for about 86.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 28
5 decision points cluster between mile 7.2 and 296.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
7.2 mi into trip|~9m in|Loop 12 / South Walton Walker Boulevard
Keep slight left at fork onto Loop 12 / South Walton Walker Boulevard toward Loop 12 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward Loop 12 South
7
16.8 mi into trip|~23m in
Take the exit toward I 35E South: Waco
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 467B
Toward I 35E South: Waco
7
168.8 mi into trip|~3h in
Take the exit toward TX 130 Toll South: San Antonio
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 265
Toward TX 130 Toll South: San Antonio
7
255.5 mi into trip|~4h 20m in
Keep slight right at fork toward I 10 West: San Antonio
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 10 West: San Antonio
8
296.8 mi into trip|~5h 3m in
Take the exit toward I 37, US 281 North: San Antonio, Corpus Christi
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 41
Toward I 37, US 281 North: San Antonio, Corpus...
Fuel & Cost
Regular Gas
$81.66 one way
$163.31 round trip
$3.84/gal25.4 MPG avg189 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$89.38
$178.76
premium
$4.54
$96.48
$192.97
diesel
$5.61
$119.31
$238.63
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$82
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$212–$322
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 189.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $57 in charging
· 2 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
162.1
2
$56.74
$25.94
Efficient EV
135.1
1
$47.29
$21.62
EV Truck/SUV
216.2
2
$75.66
$34.59
Gas CO2
189 kg
EV CO2
63 kg (67% less)
Plan for 2 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Irving, TX
Night
in Irving on Saturday
Local time
9:47 PM
CDT
Current temp
61°F
Unavailable
Live forecast
Destination
Mercedes, TX
Night
in Mercedes on Saturday
Local time
9:47 PM
CDT
Current temp
91°F
Unavailable
Live forecast
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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
30 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
9h 25m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
San Antonio Missions National Historical Park
National Historical Park
Welcome to San Antonio Missions, a National Park Service site and the only UNESCO World Heritage Site in Texas. Each mission in the park is a center of community and has been since the early 1700s. Th...
1 mi from route
~3 min detour
Free
near mile 298.2
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
5 mi from route
~14 min detour
Free
near mile 93.2
On May 8, 1846, U.S. and Mexican troops clashed on the prairie of Palo Alto. The battle was the first in a two-year long war that changed the map of North America. Although the two countries have deve...
29 mi from route
~73 min detour
Free
near mile 540.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a high-speed experience, as 76% of this route consists of highway driving. You will encounter a significant, uninterrupted 86.1-mile stretch along TX 130 Toll, which allows for consistent pacing. The road character shifts from the bustling urban corridors near Irving to the open, expansive stretches of the Great Plains. Because the majority of the trip is highway-focused, you should prepare for a steady, focused driving environment. It is a long-distance profile that demands attention, but the reliance on major thoroughfares ensures you maintain a reliable pace for the duration of the 540.4-mile trip.
76% highway — fuel and pacing are the main things to plan.
39 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 86.1 mi on TX 130 Toll.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on TX 130 Toll and South R L Thornton Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 7.2 miles in near Loop 12 / South Walton Walker Boulevard.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 28 significant decision points across 540.4 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 7.2 miles (Loop 12 / South Walton Walker Boulevard): Highway fork - watch signs carefully. Lane positioning matters here; at 16.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 168.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
718 ft104 ft
Total Climb
200 ft
Total Descent
734 ft
Highest Point
718 ft
~180.1 mi in
Elevation Range
614 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Irving, TX to Mercedes, TX, road signs begin pointing toward Corpus Christi along the way.
Irving is a city in the Prairies and Lakes region of Texas. Part of the Dallas-Fort Worth Metroplex, Irving has experienced exponential growth over the past fifty years, and is home to a multitude of attractions of all types, from modern art to major sporting events. Founded in 1902 out of the remnants of the small community of Kit, Irving is now a bustling city of approximately 197,000 residents.
Rather like Dallas, it is divided into a highly affluent northern half and less affluent but highly diverse southern half. It is bounded to the east by the northern fork (Elm Fork) of the Trinity River and to the northwest by the sprawling D/FW International Airport.
The longest stretch is about 86.1 miles on TX 130 Toll. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 270 miles on day one.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Mercedes, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 7.2 miles (Loop 12 / South Walton Walker Boulevard): Highway fork - watch signs carefully. Lane positioning matters here; at 16.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 168.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes — San Antonio Missions National Historical Park, Waco Mammoth National Monument and Palo Alto Battlefield National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 9.4 hours each way, a round trip means 18.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Mercedes, TX before the return drive.
