The drive from San Antonio, TX to Cameron Park, TX covers 273.8 miles and takes about 4h 54m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Lucian Adams Freeway, U.S. Highway 77, I 69E for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 125.1 miles on Lucian Adams Freeway.
At current regular gas prices, budget about $41.37 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
136.9 miles from San Antonio, TX
A natural place for your longest stop of the day
, about 2h 20m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 54m. Total distance: 273.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 54m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Drive Character
This is a 4h 54m highway drive covering 273.8 miles, with most of the trip on Lucian Adams Freeway and U.S. Highway 77. The longest continuous stretch is about 125.1 miles on Lucian Adams Freeway.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 18 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Lucian Adams Freeway is the longest continuous segment at about 125.1 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Lucian Adams Freeway 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 0.8 miles in near Tower of the Americas Way.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 11 significant decision points across 273.8 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 0.8 miles (Tower of the Americas Way): Lane positioning matters here; at 127.7 miles (I 69E; US 77): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 220.4 miles (I 69E; US 77 / U.S. Highway 77): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 11 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
0.8 mi into trip|~1m in|Tower of the Americas Way
Turn right onto Tower of the Americas Way
Lane positioning matters here
Use the right lane.
7
127.7 mi into trip|~2h 10m in|I 69E; US 77
Take the exit onto I 69E; US 77 toward I 69E, US 77: Kingsville, Brownsville
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.
Toward I 69E, US 77: Kingsville, Brownsville
6
220.4 mi into trip|~3h 53m in|I 69E; US 77 / U.S. Highway 77
Keep slight left at fork onto I 69E; US 77 / U.S. Highway 77
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
266.2 mi into trip|~4h 42m in|I 169; TX 550 Toll / Interstate 169
Keep slight right at fork onto I 169; TX 550 Toll / Interstate 169 toward TX 550 Toll: Port of Brownsville
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 10B
Toward TX 550 Toll: Port of Brownsville
6
268.4 mi into trip|~4h 45m in
Take the exit toward FM 1847: Paredes Line Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Toward FM 1847: Paredes Line Road
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 San Antonio, TX to Cameron Park, TX, road signs begin pointing toward Brownsville along the way.
The midpoint is around 136.9 miles from San Antonio, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Lucian Adams Freeway if your tank is already low. That segment runs about 125.1 miles.
Arriving in Cameron Park, TX
The final approach into Cameron Park, 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 Cameron Park, TX.
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.
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...
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...
4 mi from route
~10 min detour
Free
near mile 273.8
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...
27 mi from route
~67 min detour
$25
near mile 188.8
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$41.37 one way
$82.74 round trip
$3.84/gal25.4 MPG avg96 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$45.28
$90.57
premium
$4.54
$48.89
$97.77
diesel
$5.61
$60.45
$120.90
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$41
Meals
$25–$50
Total
$66–$91
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 95.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $29 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
82.1
1
$28.75
$13.14
Efficient EV
68.5
0
$23.96
$10.95
EV Truck/SUV
109.5
1
$38.33
$17.52
Gas CO2
96 kg
EV CO2
32 kg (67% 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 17, 2026
Origin
San Antonio, TX
Late night
in San Antonio on Friday
Local time
5:32 AM
CDT
Current temp
77°F
Unavailable
Live forecast
Destination
Cameron Park, TX
Late night
in Cameron Park on Friday
Local time
5:32 AM
CDT
Current temp
73°F
Mostly Cloudy
SE 12 mph0% chanceLive 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
4 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
4h 54m 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.
Frequently Asked Questions
The drive from San Antonio, TX to Cameron Park, TX covers 273.8 miles and takes about 4h 54m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Lucian Adams Freeway, U.S. Highway 77, I 69E. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 136.9 miles from San Antonio, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $41.37 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
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.
This is a demanding drive. With 11 significant decision points across 273.8 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.
The main spots that need attention: at 0.8 miles (Tower of the Americas Way): Lane positioning matters here; at 127.7 miles (I 69E; US 77): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 220.4 miles (I 69E; US 77 / U.S. Highway 77): Highway fork - watch signs carefully. Lane positioning matters here.
On the drive from San Antonio, TX to Cameron Park, TX, road signs begin pointing toward Brownsville along the way.
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.
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.
