If you are planning to head south from Austin to Rio Hondo, expect a journey covering 329.8 miles that typically takes about 5 hours and 56 minutes. You will spend your time traveling within the Great Plains region, moving from the state capital toward the deep southern part of Texas. While you can certainly complete this trip in a single day, be prepared for a long stretch behind the wheel. Budgeting around $50 for fuel should cover your needs for the one-way transit. Since the drive is manageable in one go, you won't necessarily need an overnight split, but keep in mind that the route requires steady focus for nearly six hours.
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
164.9 miles from Austin, TX
A natural place for your longest stop of the day
, about 2h 55m into the drive
.
Main Roads
Road
Distance
Duration
I 37
118.7 mi
1h 59m
U.S. Highway 77
86.8 mi
1h 36m
Purple Heart Trail
58.3 mi
1h 3m
I 69E
31.3 mi
33m
Connally Loop
11 mi
12m
North Pan Am Expressway
10 mi
11m
Combes Rio Hondo Road
8.5 mi
11m
Interstate Highway 35
1.7 mi
1m
Longest stretch:
I 37
— 118.7 mi, about 1h 59m
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin, TX and Rio Hondo, TX.
1
Start on East 5th Street
0.5 mi·1 min·East 5th Street
Use the straight / right lanes.
2
At end of road, turn right onto North Interstate 35
0.4 mi·39 sec·North Interstate 35
Use the straight / slight left lanes.
3
Take the ramp
0.2 mi·21 sec
Toward I 35 South
4
Merge onto I 35; US 290
46 mi·50 min·Purple Heart Trail
Use the straight / slight right lanes.
5
Continue on I 35
1.7 mi·1 min·Interstate Highway 35
Use the straight / slight right lanes.
6
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
7
Continue on I 35
10.0 mi·11 min·North Pan Am Expressway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 410
11 mi·12 min·Connally Loop
Toward I 410 SouthUse the straight / slight right lanes.
9
Take the exit
0.2 mi·28 sec
Exit 41Toward I 37, US 281 North: San Antonio, Corpus ChristiUse the straight / slight right lanes.
10
Keep slight left at fork
0.5 mi·1 min
Toward I 37 South: Corpus ChristiUse the slight left / slight right lanes.
11
Merge onto I 37
119 mi·1 hr 59 min·I 37
Use the straight / slight right lanes.
12
Take the exit onto I 69E; US 77
31 mi·33 min·I 69E; US 77
Toward I 69E, US 77: Kingsville, BrownsvilleUse the straight / slight right lanes.
13
Keep slight left at fork onto US 77
61 mi·1 hr 9 min·U.S. Highway 77
14
Keep slight left at fork onto I 69E; US 77
25 mi·26 min·U.S. Highway 77
Use the straight / slight right lanes.
15
Take the exit
0.2 mi·21 sec
Exit 30Toward TX 107, FM 508: Santa Rosa, Rio HondoUse the straight / slight right lanes.
16
Turn straight onto Interstate 69E Frontage Road
0.2 mi·27 sec·Interstate 69E Frontage Road
17
Turn left onto TX 107
318 ft·7 sec·Templeton Avenue
18
Continue on FM 508
0.3 mi·30 sec·Templeton Street
19
Continue on FM 508
8.5 mi·11 min·Combes Rio Hondo Road
20
Keep slight left at fork onto West Colorado Avenue
1.0 mi·2 min·West Colorado Avenue
21
Arrive at destination
FM 106
Trip Plan
Getting an early start is your best strategy for tackling this nearly six-hour trek, as it allows you to clear the busier stretches of I-35 before peak congestion hits. Since the trip includes one recommended stop, use that break strategically to stretch your legs and refuel before the final, more winding portion of the journey begins. Keep a close eye on your fuel gauge during the turn-heavy segments, as local roads may offer fewer service options than the main interstate. Flexibility is your biggest advantage here, so if you find yourself tiring, don't hesitate to extend your break to ensure you arrive in Rio Hondo refreshed and ready for your arrival.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 164.9 miles from Austin, TX, or about 2h 55m into the drive.
The longest continuous stretch on this route runs about 118.7 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 73 miles or 1h 21m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 164.9 miles or 2h 55m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 48m
Traffic, exits, and arrival timing usually matter more near Rio Hondo, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Austin, 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 Austin, TX
This is one driving day of about 329.8 miles and 5h 56m.
Your first comfortable stop window is around 73 miles from Austin, 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 I 37 for about 118.7 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 14
5 decision points cluster between mile 0.5 and 319.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0.5 mi into trip|~1m in|North Interstate 35
At end of road, turn right onto North Interstate 35
Lane positioning matters here
Use the straight / slight left lanes.
7
71.1 mi into trip|~1h 18m in|I 410 / Connally Loop
Keep slight right at fork onto I 410 / Connally Loop toward I 410 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 410 South
8
82 mi into trip|~1h 31m 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...
7
82.2 mi into trip|~1h 31m in
Keep slight left at fork toward I 37 South: Corpus Christi
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 37 South: Corpus Christi
8
319.6 mi into trip|~5h 42m in
Take the exit toward TX 107, FM 508: Santa Rosa, Rio Hondo
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 30
Toward TX 107, FM 508: Santa Rosa, Rio Hondo
Fuel & Cost
Regular Gas
$49.83 one way
$99.67 round trip
$3.84/gal25.4 MPG avg115 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$54.55
$109.09
premium
$4.54
$58.88
$117.77
diesel
$5.61
$72.82
$145.63
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$50
Meals
$25–$50
Total
$75–$100
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 115.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $35 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
98.9
1
$34.63
$15.83
Efficient EV
82.5
0
$28.86
$13.19
EV Truck/SUV
131.9
1
$46.17
$21.11
Gas CO2
115 kg
EV CO2
39 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.
Forecast as of Apr 15, 2026
Origin
Austin, TX
Late night
in Austin on Sunday
Local time
2:49 AM
CDT
Current temp
63°F
Unavailable
Live forecast
Destination
Rio Hondo, TX
Late night
in Rio Hondo on Sunday
Local time
2:49 AM
CDT
Current temp
90°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.
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
27 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
5h 56m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a mix of infrastructure as you navigate this route, primarily utilizing Interstate 35 and the Purple Heart Trail. While large portions of the journey involve major highway travel, the route transitions into a turn-heavy local drive as you approach your destination. This shift requires you to stay alert, as the road personality changes from the high-speed flow of I-35 to more technical segments. Because the route features a high density of turns, you will find it less of a monotonous interstate grind and more of a hands-on driving experience. Plan for a variety of conditions that will keep you engaged from start to finish.
76% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 118.7 mi on I 37.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 37 and U.S. Highway 77. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.5 miles in near North Interstate 35.
Driving Effort9/10
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 14 significant decision points across 329.8 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 0.5 miles (North Interstate 35): Lane positioning matters here; at 71.1 miles (I 410 / Connally Loop): Highway fork - watch signs carefully. Lane positioning matters here; at 82 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Austin, TX and Rio Hondo, TX, road signs point toward Corpus Christi and Brownsville.
Austin is a city of about 1,054,000 (2026) surpassing Fort Worth to become the 4th most populous city in Texas. It is on the southeast edge of the Hill Country region of Texas, making it the fourth-largest city in the state and the 11th-largest in the country. It is the capital of Texas and a college town, and also a center of an alternative culture away from the major cities on the US coasts, though the city is rapidly gentrifying with its rising popularity. Austin's attitude is commonly emblazoned about town on T-shirts and bumper stickers that read: "Keep Austin Weird." Austin is also marketed as the Live Music Capital of the World due to the large number of venues.
Top landmarks
•Texas State Capitol — capitol and seat of government of the U.S. state of Texas
•Lyndon Baines Johnson Library and Museum — presidential library and museum for U.S. President Lyndon B. Johnson in Austin,...
•Texas State Cemetery — historic cemetery in Austin, Texas, USA
Doable as a same-day drive at 5h 56m. Total distance: 329.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 56m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (76%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 118.7 miles on I 37. The full list of main roads is in the Roads section above.
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 Rio Hondo, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 0.5 miles (North Interstate 35): Lane positioning matters here; at 71.1 miles (I 410 / Connally Loop): Highway fork - watch signs carefully. Lane positioning matters here; at 82 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Not recommended in a single day. At 5.9 hours each way, a round trip means 11.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Rio Hondo, TX before the return drive.
