The drive from Port Isabel, TX to Irving, TX covers 551.9 miles and takes about 10h 21m behind the wheel.
It usually feels better as a 2-day road trip than as one long push.
The route leans on U.S. Highway 77, Purple Heart Trail, Pickle Parkway for much of the mileage,
and the overall profile is long-distance drive.
The longest uninterrupted segment is about 126.7 miles on U.S. Highway 77.
At current regular gas prices, budget about $87.43 one way before food or hotel costs.
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
276 miles from Port Isabel, TX
A natural place for your longest stop of the day
, about 5h 28m into the drive
.
Drive Character
At 551.9 miles and 10h 21m of driving, this is a route where fuel stops, weather, and timing matter more than any single turn. The main roads are U.S. Highway 77 and Purple Heart Trail.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 60 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
U.S. Highway 77 is the longest continuous segment at about 126.7 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on U.S. Highway 77 and Purple Heart Trail. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 15.6 miles in.
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 34 significant decision points across 551.9 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 15.6 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 380.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 484.9 miles (I 35E): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 34 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
8
15.6 mi into trip|~19m in
Keep slight right at fork toward TX 550
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / left / right lanes.
Toward TX 550
7
380.2 mi into trip|~7h 18m in
Keep slight left at fork toward I 35 North: Waco
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 35 North: Waco
7
484.9 mi into trip|~9h 6m in|I 35E
Keep slight right at fork onto I 35E toward I 35E: Dallas
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 35E: Dallas
7
532.2 mi into trip|~9h 55m in
Take the exit toward I 20 West: Fort Worth
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 418A
Toward I 20 West: Fort Worth
7
539.7 mi into trip|~10h 4m in
Take the exit toward Spur 408
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 460
Toward Spur 408
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Port Isabel, TX and Irving, TX, road signs point toward Skidmore and Waco.
Skidmore
186.4 mi in|~3h 42m
Waco
321.2 mi in|~6h 23m
Main Roads
Road
Distance
Duration
U.S. Highway 77
126.7 mi
2h 20m
Purple Heart Trail
97.7 mi
1h 39m
Pickle Parkway
58.5 mi
54m
I 35E
47.3 mi
48m
US Highway 181 South
40.2 mi
45m
State Highway 80 North
30.8 mi
35m
State Highway 80
23.6 mi
25m
I 37
19.7 mi
19m
Longest stretch:
U.S. Highway 77
— 126.7 mi, about 2h 20m
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Isabel, TX and Irving, TX.
1
Start on South Musina Street
0.2 mi·33 sec·South Musina Street
2
Turn left onto TX 100
0.1 mi·23 sec·West Queen Isabella Boulevard
3
Turn straight onto TX 100
1.0 mi·2 min·State Highway 100
Use the left lane.
4
Turn left onto TX 48
14 mi·15 min·TX 48
Use the left lane.
5
Take the exit
0.2 mi·22 sec
Toward TX 550Use the straight / slight right lanes.
6
Keep slight right at fork
47 ft·1 sec
Toward TX 550Use the straight / left / right lanes.
7
Turn right onto TX 550 Toll
3.6 mi·3 min·State Highway 550
8
Continue on FM 511
1.9 mi·2 min·FM 511
9
Continue on I 169; TX 550 Toll
0.9 mi·58 sec·I-169, TX 550 Toll
10
Continue on I 169; TX 550 Toll
3.6 mi·3 min·Interstate 169
11
Merge onto I 69E; US 77; US 83
2.2 mi·2 min·North Expressway
12
Continue on I 69E; US 77; US 83
102 mi·1 hr 53 min·U.S. Highway 77
Use the straight / slight right lanes.
13
Keep slight left at fork
0.2 mi·14 sec
14
Merge onto I 69E; US 77
1.2 mi·1 min·I 69E; US 77
15
Continue on U.S. Highway 77
12 mi·12 min·U.S. Highway 77
16
Take the exit
0.3 mi·34 sec
17
Turn straight onto US Highway 77 Frontage Road
485 ft·17 sec·US Highway 77 Frontage Road
18
Turn right onto County Road 10
1.0 mi·4 min·County Road 10
19
Turn left onto County Road 79
4.0 mi·15 min·County Road 79
20
Turn left onto County Road 18
0.2 mi·43 sec·County Road 18
21
Turn sharp right
1.1 mi·2 min
22
Take the ramp
0.4 mi·57 sec
23
Merge onto US 77
2.3 mi·2 min·Driscoll Bypass
24
Continue on US 77
13 mi·14 min·U.S. Highway 77
25
Merge onto I 37; US 77; I 69E
1.4 mi·1 min·I 37; US 77; I 69E
26
Keep slight left at fork
1.3 mi·1 min
27
Continue on I 37
18 mi·18 min·I 37
Use the straight / slight right lanes.
28
Take the exit
0.2 mi·32 sec
Toward TX 359: Mathis, Skidmore
29
Turn right onto TX 359
12 mi·16 min·State Highway 359
30
At end of road, turn left onto US 181
0.8 mi·55 sec·South 8th Street
31
Continue on US 181
40 mi·45 min·US Highway 181 South
32
Continue on US 181
1.2 mi·1 min·South Sunset Strip Drive
33
Turn right onto TX 72; TX 239
0.8 mi·1 min·West Main Street
34
Keep slight left at fork onto TX 72; TX 239
233 ft·3 sec·East Main Street
35
Continue on FM 792
8.4 mi·10 min·Helena Road
36
Turn straight onto TX 80
24 mi·25 min·State Highway 80
37
Continue on TX 80
1.0 mi·2 min·South Nixon Avenue
38
Continue on TX 80; TX 97
31 mi·35 min·State Highway 80 North
39
Continue on US 183
10 mi·11 min·US 183
40
Continue on US 183
4.9 mi·8 min·South Colorado Street
41
Continue on US 183
0.2 mi·16 sec·United States Highway 183
42
Keep slight left at fork
0.5 mi·35 sec
Toward TX 130 Toll North: Austin, Waco
43
Merge onto TX 130 Toll
59 mi·54 min·Pickle Parkway
Use the straight / slight right lanes.
44
Keep slight left at fork
0.4 mi·49 sec
Toward I 35 North: WacoUse the slight left / slight right lanes.
45
Merge onto I 35
65 mi·1 hr 6 min·Purple Heart Trail
Use the straight / slight right lanes.
46
Continue on I 35
6.6 mi·7 min·South Jack Kultgen Expressway
Use the straight / slight right lanes.
47
Continue on I 35; US 77
33 mi·33 min·Purple Heart Trail
Use the straight / slight right lanes.
48
Keep slight right at fork onto I 35E
47 mi·48 min·I 35E
Toward I 35E: DallasUse the slight right lane.
49
Take the exit
0.9 mi·2 min
Exit 418AToward I 20 West: Fort WorthUse the slight right lane.
50
Merge onto I 20
6.6 mi·7 min·Lyndon B Johnson Freeway
Use the straight / slight right lanes.
51
Take the exit
0.8 mi·1 min
Exit 460Toward Spur 408Use the slight right lane.
52
Merge onto Spur 408
3.9 mi·4 min·Patriot Parkway
Use the straight / slight right lanes.
53
Merge onto Loop 12
5.4 mi·5 min·South Walton Walker Boulevard
Use the straight / slight right lanes.
54
Take the exit
492 ft·12 sec
Toward TX 356: Irving BoulevardUse the slight right lane.
55
Turn straight onto South Loop 12
0.3 mi·32 sec·South Loop 12
56
Turn left onto TX 356
0.4 mi·59 sec·East State Highway 356
Use the left / straight lanes.
57
Continue on TX 356
1.2 mi·2 min·East Irving Boulevard
58
Continue on West Irving Boulevard
0.1 mi·26 sec·West Irving Boulevard
59
Turn right onto North Ohio Street
58 ft·2 sec·North Ohio Street
60
Arrive at destination
North Ohio Street
Trip Plan
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 276 miles from Port Isabel, TX, or about 5h 28m into the drive.
The longest continuous stretch on this route runs about 126.7 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 121 miles or 2h 16m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 276 miles or 5h 28m 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 276 miles or 5h 28m
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 9h 14m
Traffic, exits, and arrival timing usually matter more near Irving, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Port Isabel, 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 Port Isabel, TX
Aim for roughly 276 miles and 5.2 hours of wheel time on this day.
Day 2
Finish the approach into Irving, TX
Aim for roughly 276 miles and 5.2 hours of wheel time on this day.
Your first comfortable stop window is around 121 miles from Port Isabel, 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 U.S. Highway 77 for about 126.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 276 mi from Port Isabel, TX
· 5h 28m into the drive
The midpoint is around 276 miles from Port Isabel, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before U.S. Highway 77 if your tank is already low. That segment runs about 126.7 miles.
Overnight split
Hotel stop
For a steadier pace, wrap day one after about 276 miles or 5.2 hours on the road.
Arriving in Irving, TX
The final approach into Irving, 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 Irving, TX.
On a multi-day trip, keep the last day a little lighter so you reach Irving, TX with some flexibility left in the schedule.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
National Parks Near This Route
Worth a detour if your schedule allows.
Palo Alto Battlefield National Historical Park
National Historical Park
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...
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...
6 mi from route
~14 min detour
Free
near mile 456.8
Protecting sixty-six miles of wild coastline along the Gulf of America, the narrow barrier island is home to one of the last intact coastal prairie habitats in the United States. Along the hypersaline...
28 mi from route
~69 min detour
$25
near mile 95.2
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $58 in charging
· 2 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
165.6
2
$57.95
$26.49
Efficient EV
138
1
$48.29
$22.08
EV Truck/SUV
220.8
2
$77.27
$35.32
Gas CO2
193 kg
EV CO2
65 kg (66% 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
Port Isabel, TX
Late night
in Port Isabel on Friday
Local time
3:05 AM
CDT
Current temp
70°F
Unavailable
Live forecast
Destination
Irving, TX
Late night
in Irving on Friday
Local time
3:05 AM
CDT
Current temp
61°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
9 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
10h 21m 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.
Frequently Asked Questions
The drive from Port Isabel, TX to Irving, TX covers 551.9 miles and takes about 10h 21m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are U.S. Highway 77, Purple Heart Trail, Pickle Parkway. Expect a mix of highway and local road driving.
Consider an overnight stop or starting very early.
Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 276 miles on day one.
The midpoint is about 276 miles from Port Isabel, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $83.39 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 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 34 significant decision points across 551.9 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.
The main spots that need attention: at 15.6 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 380.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 484.9 miles (I 35E): Highway fork - watch signs carefully. Lane positioning matters here.
Between Port Isabel, TX and Irving, TX, road signs point toward Skidmore and Waco.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from
OSRM
over
OpenStreetMap.
Fuel cost uses
EIA
weekly regional averages.
EV charging comes from the
NREL Alternative Fuels
dataset.
National park proximity is from the
NPS API.
Pages are published only after passing our data-quality checks; our
methodology page
documents refresh cadence, editorial standards, and known limitations.
