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Trip from Harlingen, TX to Montopolis, TX
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Jul 19, 2026 · Editorial standards
Drive Time
6h 6m
Distance
305.5 mi
492 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$42
one way
EV Charging
Unknown
Best Time to Leave
4 AM
5h 54m
★
6 AM
6h 7m
8 AM
6h 32m
10 AM
6h 16m
12 PM
6h 13m
3 PM
6h 17m
5 PM
6h 31m
8 PM
5h 59m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Harlingen, TX
Wikimedia Commons
Montopolis, TX
Jeff Stapleton
Trip Overview
Harlingen, TX to Montopolis, TX is 305.5 miles and takes about 6h 6m via U.S. Highway 77 and US Highway 181 South, with a fuel budget near $44 and enough daylight to finish in a day. This drive stays within the Great Plains region, offering a consistent landscape for most of the trip. With 90% of the route on highways, expect a straightforward drive. This is a solid choice for a single-day trip, especially if you're looking for efficiency and minimal navigation changes between Texas cities.
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
152.8 miles from Harlingen, TX
A natural place for your longest stop of the day , about 3h 6m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| U.S. Highway 77 | 112.8 mi | 2h 4m |
| 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 |
| State Highway 359 | 12.4 mi | 16m |
| US Highway 183 South | 11.8 mi | 15m |
| US 183 | 10.1 mi | 11m |
Longest stretch:
U.S. Highway 77
— 112.8 mi, about 2h 4m
Turn-by-Turn Driving Directions
Step-by-step road directions between Harlingen, TX and Montopolis, TX.
1
Start on South Commerce Street
14 ft
·
3 sec
·
South Commerce Street
2
Turn left onto West Harrison Avenue
1.3 mi
·
2 min
·
West Harrison Avenue
3
Turn right onto North Expressway 77
428 ft
·
12 sec
·
North Expressway 77
4
Take the ramp
0.2 mi
·
21 sec
Toward I 69E North, US 77 North
5
Merge onto I 69E; US 77
88 mi
·
1 hr 37 min
·
U.S. Highway 77
Use the straight / slight right lanes.
6
Keep slight left at fork
0.2 mi
·
14 sec
7
Merge onto I 69E; US 77
1.2 mi
·
1 min
·
I 69E; US 77
8
Continue on U.S. Highway 77
12 mi
·
12 min
·
U.S. Highway 77
9
Take the exit
0.3 mi
·
34 sec
10
Turn straight onto US Highway 77 Frontage Road
485 ft
·
17 sec
·
US Highway 77 Frontage Road
11
Turn right onto County Road 10
1.0 mi
·
4 min
·
County Road 10
12
Turn left onto County Road 79
4.0 mi
·
15 min
·
County Road 79
13
Turn left onto County Road 18
0.2 mi
·
43 sec
·
County Road 18
14
Turn sharp right
1.1 mi
·
2 min
15
Take the ramp
0.4 mi
·
57 sec
16
Merge onto US 77
2.3 mi
·
2 min
·
Driscoll Bypass
17
Continue on US 77
13 mi
·
14 min
·
U.S. Highway 77
18
Merge onto I 37; US 77; I 69E
1.4 mi
·
1 min
·
I 37; US 77; I 69E
19
Keep slight left at fork
1.3 mi
·
1 min
20
Continue on I 37
18 mi
·
18 min
·
I 37
Use the straight / slight right lanes.
21
Take the exit
0.2 mi
·
32 sec
Toward TX 359: Mathis, Skidmore
22
Turn right onto TX 359
12 mi
·
16 min
·
State Highway 359
23
At end of road, turn left onto US 181
0.8 mi
·
55 sec
·
South 8th Street
24
Continue on US 181
40 mi
·
45 min
·
US Highway 181 South
25
Continue on US 181
1.2 mi
·
1 min
·
South Sunset Strip Drive
26
Turn right onto TX 72; TX 239
0.8 mi
·
1 min
·
West Main Street
27
Keep slight left at fork onto TX 72; TX 239
233 ft
·
3 sec
·
East Main Street
28
Continue on FM 792
8.4 mi
·
10 min
·
Helena Road
29
Turn straight onto TX 80
24 mi
·
25 min
·
State Highway 80
30
Continue on TX 80
1.0 mi
·
2 min
·
South Nixon Avenue
31
Continue on TX 80; TX 97
31 mi
·
35 min
·
State Highway 80 North
32
Continue on US 183
10 mi
·
11 min
·
US 183
33
Continue on US 183
4.9 mi
·
8 min
·
South Colorado Street
34
Continue on US 183
0.2 mi
·
16 sec
·
United States Highway 183
35
Keep slight left at fork
0.5 mi
·
35 sec
Toward TX 130 Toll North: Austin, Waco
36
Merge onto TX 130 Toll
9.8 mi
·
8 min
·
Pickle Parkway
Use the straight / slight right lanes.
37
Take the exit
0.4 mi
·
46 sec
Exit 460
Toward US 183 North: Austin
Use the straight / slight right lanes.
38
Continue on US 183
12 mi
·
15 min
·
US Highway 183 South
Use the left lane.
39
Continue on 183 Toll
0.7 mi
·
40 sec
·
Bergstrom Expressway
Use the straight / slight right lanes.
40
Take the exit
0.5 mi
·
54 sec
Toward Loop 111: Cesar Chavez Street, 5th Street, 6th Street, 7th Street, Airport Boulevard
Use the right lane.
41
Keep slight right at fork onto Loop 111
0.2 mi
·
33 sec
·
Airport Boulevard
42
Continue on Loop 111
0.5 mi
·
42 sec
·
Airport Boulevard
43
Continue on US 183
0.1 mi
·
8 sec
·
Ed Bluestein Boulevard
44
Take the ramp
486 ft
·
11 sec
Toward 183 Toll South: Lockhart
45
Arrive at destination
Toward 183 Toll South: Lockhart
Trip Plan
Given the 6-hour duration, departing from Harlingen, TX in the morning allows ample time to reach Montopolis, TX before evening. You'll encounter one primary road change as you transition from US Highway 181 South to State Highway 80 North. Plan for your fuel stop before hitting the longest stretch of 112.8 miles on U.S. Highway 77 to avoid any potential delays. With a manageable distance and a $44 fuel estimate, this route is well-suited for a single-day journey, offering flexibility in your departure time.
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 152.8 miles from Harlingen, TX, or about 3h 6m into the drive.
The longest continuous stretch on this route runs about 112.8 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 67 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 152.8 miles or 3h 6m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h
Traffic, exits, and arrival timing usually matter more near Montopolis, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Harlingen, 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.
Day 1
Settle into the route from Harlingen, TX
This is one driving day of about 305.5 miles and 6h 6m.
Your first comfortable stop window is around 67 miles from Harlingen, 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.
The longest stretch is on U.S. Highway 77 for about 112.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
153 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.
Pacing Suggestions
Fuel and coffee
A short stop after about 67 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 152.8 miles from Harlingen, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before U.S. Highway 77 if your tank is already low. That segment runs about 112.8 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Stops Along Your Drive
Picked by where they fit in your drive — first break, midpoint reset, final stretch.
San Patricio County Southbound Rest Area
0 mi from route
Kenedy County Rest Area
0.1 mi from route
Texas Travel Information Center at Harlingen
0.1 mi from route
San Patricio County Northbound Rest Area
0.1 mi from route
Love's Travel Stop
0.1 mi from route
Love's Travel Stop
0.1 mi from route
Road Ranger
0.1 mi from route
Service Plaza
0.1 mi from route
Pilot Travel Center
0.2 mi from route
Hugh Ramsey Nature Park
4.6
★ ★ ★ ★ ★
Near the start, short detour
2 mi from route
~5 min detour
Harlingen, Texas
Hours: 6 am–10 pm
+19562165951
Visit websiteAustin Bat Tours
4.4
★ ★ ★ ★ ☆
Near the end, ~9 min detour
Home stretch
3.5 mi from route
~9 min detour
Austin, Texas
Hours: 9 am–10 pm
Visit websiteDick Kleberg Park
4.3
★ ★ ★ ★ ☆
Early in the drive, ~12 min detour
Early stretch
4.7 mi from route
~12 min detour
Kingsville, Texas
Hours: 8 am–10 pm
+13612218705
Visit websitePlace data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 265 decision points cluster between mile 1.4 and 304.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
1.4 mi into trip
|
~2m in
Take the ramp toward I 69E North, US 77 North
Multiple destination signs - pick the right one
Toward I 69E North, US 77 North
5
1.6 mi into trip
|
~3m in
|
I 69E; US 77 / U.S. Highway 77
Merge onto I 69E; US 77 / U.S. Highway 77
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
281 mi into trip
|
~5h 38m in
Keep slight left at fork toward TX 130 Toll North: Austin, Waco
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward TX 130 Toll North: Austin, Waco
7
291.2 mi into trip
|
~5h 47m in
Take the exit toward US 183 North: Austin
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 460
Toward US 183 North: Austin
7
304.1 mi into trip
|
~6h 4m in
Take the exit toward Loop 111: Cesar Chavez Street, 5th Street, 6th Street, 7th Street, Airport Boulevard
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the right lane.
Toward Loop 111: Cesar Chavez Street, 5th Stree...
Fuel & Cost
Regular Gas
$41.84 one way
$83.69 round trip
$3.48/gal
25.4 MPG avg
107 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $3.89 | $46.74 | $93.48 |
| premium | $4.23 | $50.82 | $101.63 |
| diesel | $4.80 | $57.68 | $115.37 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$42
Meals
$25–$50
Total
$67–$92
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 106.9 kg one way. Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $32 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 91.7 | 1 | $32.08 | $14.66 |
| Efficient EV | 76.4 | 0 | $26.73 | $12.22 |
| EV Truck/SUV | 122.2 | 1 | $42.77 | $19.55 |
Gas CO2
107 kg
EV CO2
36 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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.
Origin
Harlingen, TX
Morning in Harlingen on Sunday
Local time
9:35 AM
CDT
Current temp
97°F
Mostly Sunny
SE 17 mph
1% chance
Live forecast
Flood Warning
Flood Warning issued July 17 at 2:38PM CDT until July 22 at 11:48AM CDT by NWS Austin/San Antonio TX
Flood Warning
Flood Warning issued July 17 at 2:38PM CDT until July 18 at 6:00PM CDT by NWS Austin/San Antonio TX
Destination
Montopolis, TX
Morning in Montopolis on Sunday
Local time
9:35 AM
CDT
Current temp
91°F
Mostly Sunny
S 10 mph
2% chance
Live forecast
Flood Warning
Flood Warning issued July 17 at 2:38PM CDT until July 22 at 11:48AM CDT by NWS Austin/San Antonio TX
Flood Warning
Flood Warning issued July 17 at 2:38PM CDT until July 18 at 6:00PM CDT by NWS Austin/San Antonio 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.
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
6 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
6h 6m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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.
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...
18 mi from route
~46 min detour
Free
View on nps.gov
Padre Island National Seashore
National Seashore
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...
27 mi from route
~67 min detour
$25
near mile 63.2
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
This trip features 90% highway driving, meaning you'll spend most of your time on well-maintained roads. The longest continuous stretch without a significant change in road type is 112.8 miles on U.S. Highway 77. You'll notice the transition from highway to surface roads as you approach Montopolis, TX. Expect a generally smooth ride with fewer exits and more open cruising for the majority of the 305.5-mile distance.
90% highway — fuel and pacing are the main things to plan.
45 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 112.8 mi on U.S. Highway 77.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on U.S. Highway 77 and US Highway 181 South. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.4 miles in.
Driving Effort
10/10
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 26 significant decision points across 305.5 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 1.4 miles: Multiple destination signs - pick the right one; at 1.6 miles (I 69E; US 77 / U.S. Highway 77): Merge point - match speed before joining. Lane positioning matters here; at 281 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Elevation Profile
Mostly flat terrain
463 ft
25 ft
Total Climb
535 ft
Total Descent
112 ft
Highest Point
463 ft
~305.5 mi in
Elevation Range
438 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Harlingen, TX and Montopolis, TX, road signs point toward Skidmore and Waco.
Skidmore
146.1 mi in
|
~2h 57m
Waco
281 mi in
|
~5h 38m
About the Cities
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 6m. Total distance: 305.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 6m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 112.8 miles on U.S. Highway 77. The full list of main roads is in the Roads section above.
Yes — we found about 10 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Montopolis, 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 1 meaningful breaks. There are 10 rest areas along the route for bathroom stops.
The main spots that need attention: at 1.4 miles: Multiple destination signs - pick the right one; at 1.6 miles (I 69E; US 77 / U.S. Highway 77): Merge point - match speed before joining. Lane positioning matters here; at 281 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.
Yes — Palo Alto Battlefield National Historical Park and Padre Island National Seashore. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.1 hours each way, a round trip means 12.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Montopolis, TX before the return drive.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, and NPS for national parks. See our methodology for refresh cadence and limitations.
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