If you are planning a trip from Rockwall to San Antonio, expect to cover 317.5 miles over a duration of approximately 4 hours and 39 minutes. Since both locations are situated within the Great Plains, the scenery remains consistent throughout your journey. This route is manageable as a single-day trip, though you should budget about $47 for fuel to reach your destination. Because this is a turn-heavy local drive rather than a straight interstate shot, you will want to stay alert behind the wheel. Use this information to decide if you prefer the engagement of local roads over the efficiency of a major highway.
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
148.3 miles from Rockwall, TX
A natural place for your longest stop of the day
, about 2h 41m into the drive
.
Step-by-step road directions between Rockwall, TX and San Antonio, TX.
1
Start on this road
169 ft·14 sec·this road
2
Turn left onto TX 205
222 ft·13 sec·North Goliad Street
3
Turn left onto West Kaufman Street
261 ft·16 sec·West Kaufman Street
4
Turn left onto TX 205
0.2 mi·29 sec·North Alamo Road
5
Continue on TX 205
0.5 mi·1 min·South Goliad Street
6
Turn slight right
459 ft·16 sec
7
Turn straight onto FM 740
1.7 mi·3 min·Ridge Road
8
Turn right onto East Interstate 30
0.4 mi·41 sec·East Interstate 30
9
Take the ramp
0.3 mi·35 sec
Toward I 30 West
10
Merge onto I 30; US 67
20 mi·24 min·Congressman Ralph Hall Highway
Use the straight / slight right lanes.
11
Take the exit
0.6 mi·1 min
Exit 46AToward I 35E: Denton, WacoUse the straight / slight right lanes.
12
Keep slight left at fork
0.1 mi·14 sec
Toward I 35E South, I 35E North: Waco, Denton
13
Keep slight left at fork
221 ft·5 sec
Toward I 35E North, I 35E South: Denton, WacoUse the straight / slight right lanes.
14
Keep slight left at fork
0.4 mi·30 sec
Toward I 35E South: WacoUse the left / right lanes.
15
Continue on I 35E
0.5 mi·44 sec·South R L Thornton Freeway
16
Continue on I 35E
89 mi·1 hr 31 min·South R L Thornton Freeway
Exit 426Toward Dallas ZooUse the straight / slight right lanes.
17
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
18
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 35
56 mi·58 min·I 35
Use the straight / slight right lanes.
20
Keep slight left at fork onto I 35; US 290
50 mi·54 min·Purple Heart Trail
Toward 32nd Street, Dean Keeton StreetUse the slight left lane.
21
Continue on I 35
1.7 mi·1 min·Interstate Highway 35
Use the straight / slight right lanes.
22
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
23
Continue on I 35
10.0 mi·11 min·North Pan Am Expressway
Use the straight / slight right lanes.
24
Keep slight left at fork onto I 35
6.4 mi·8 min·North Pan Am Expressway
Toward I 35 SouthUse the straight / slight right lanes.
25
Keep slight left at fork onto I 35
0.6 mi·41 sec·North Pan Am Expressway
Toward I 35 South: Lower Level, LaredoUse the slight left lane.
26
Take the exit
0.1 mi·16 sec
Exit 157AToward Lexington Avenue, Main Avenue, San Pedro AvenueUse the slight right lane.
27
Turn straight onto East Elmira Street
526 ft·17 sec·East Elmira Street
Use the left / straight lanes.
28
Turn left onto North Main Avenue
0.2 mi·18 sec·North Main Avenue
Use the left / straight lanes.
29
Enter roundabout onto Navarro Street
159 ft·3 sec·Navarro Street
30
Continue on Navarro Street
111 ft·2 sec·Navarro Street
31
Keep slight right at fork onto North Main Avenue
0.4 mi·51 sec·North Main Avenue
Use the slight left / slight right lanes.
32
Turn right onto West Travis Street
222 ft·10 sec·West Travis Street
33
Turn left onto North Flores Street
0.2 mi·20 sec·North Flores Street
34
Continue on Military Plaza
392 ft·15 sec·Military Plaza
35
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
36
Arrive at destination
Dolorosa Street
Trip Plan
Given the 4 hour and 39 minute duration, you should prepare for a consistent day of driving. Planning for at least one stop is a smart way to break up the journey and stay sharp on the winding local roads. Since you are not utilizing highways, your travel speed will be dictated by local traffic patterns, so factor in extra time for potential delays. Aim to depart early in the day to avoid navigating unfamiliar turns after dark. A helpful tip for this specific route is to double-check your navigation apps frequently, as the reliance on local streets like North Goliad and West Kaufman means you will have many opportunities for wrong turns.
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 148.3 miles from Rockwall, TX, or about 2h 41m into the drive.
The longest continuous stretch on this route runs about 99.6 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 65 miles or 1h 14m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 148.3 miles or 2h 41m 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 22m
Traffic, exits, and arrival timing usually matter more near San Antonio, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Rockwall, 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 Rockwall, TX
This is one driving day of about 296.6 miles and 5h 23m.
Your first comfortable stop window is around 65 miles from Rockwall, 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 Purple Heart Trail for about 99.6 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 23
5 decision points cluster between mile 23.8 and 295.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
23.8 mi into trip|~31m in
Take the exit toward I 35E: Denton, Waco
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 46A
Toward I 35E: Denton, Waco
9
24.4 mi into trip|~32m in
Keep slight left at fork toward I 35E North, I 35E South: Denton, Waco
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 35E North, I 35E South: Denton, Waco
8
215.1 mi into trip|~3h 51m in|I 35; US 290 / Purple Heart Trail
Keep slight left at fork onto I 35; US 290 / Purple Heart Trail toward 32nd Street, Dean Keeton Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward 32nd Street, Dean Keeton Street
8
294.9 mi into trip|~5h 20m in|I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South: Lower Level, Laredo
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward I 35 South: Lower Level, Laredo
8
295.5 mi into trip|~5h 20m in
Take the exit toward Lexington Avenue, Main Avenue, San Pedro Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro...
Fuel & Cost
Regular Gas
$44.82 one way
$89.63 round trip
$3.84/gal25.4 MPG avg104 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$49.06
$98.11
premium
$4.54
$52.96
$105.91
diesel
$5.61
$65.49
$130.97
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$45
Meals
$25–$50
Total
$70–$95
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 103.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $31 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
89
1
$31.14
$14.24
Efficient EV
74.2
0
$25.95
$11.86
EV Truck/SUV
118.6
1
$41.52
$18.98
Gas CO2
104 kg
EV CO2
35 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 18, 2026
Origin
Rockwall, TX
Late night
in Rockwall on Tuesday
Local time
3:59 AM
CDT
Current temp
78°F
Unavailable
Live forecast
Destination
San Antonio, TX
Late night
in San Antonio on Tuesday
Local time
3:59 AM
CDT
Current temp
68°F
Mostly Cloudy
SSE 5 to 15 mph1% chanceLive forecast
84°F
Troy, TX
148 mi in
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
10 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
5h 23m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Waco Mammoth National Monument
National Monument
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
~11 min detour
Free
near mile 112.5
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...
9 mi from route
~22 min detour
Free
near mile 296.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This journey is defined by its turn-heavy local nature, requiring your full attention as you navigate roads like North Goliad Street, West Kaufman Street, and North Alamo Road. With a 0% highway share, you will not find the monotonous cruise control stretches typical of interstate travel. The longest uninterrupted stretch is 0 miles on North Goliad Street, meaning you will be navigating constant changes in direction throughout the drive. Expect a more hands-on experience that keeps you engaged with the road layout from start to finish. It is a distinct departure from high-speed transit, favoring local navigation over raw speed.
58% highway, the rest on surface roads — varied driving throughout.
36 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 99.6 mi on Purple Heart Trail.
How Hard Is This Drive?
7/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 23.8 miles in.
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 23 significant decision points across 296.6 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 23.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 215.1 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. 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 Rockwall, TX and San Antonio, TX, road signs point toward Waco, Denton and Dallas Zoo.
San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.
Top landmarks
•Alamo Mission in San Antonio — historic place in San Antonio, Bexar County, Texas
•San Antonio Missions National Historical Park — historic district in San Antonio, Bexar County, Texas
•Fort Sam Houston — military base in San Antonio, Texas
Doable as a same-day drive at 5h 23m. Total distance: 296.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 23m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 99.6 miles on Purple Heart Trail. 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 San Antonio, 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 23.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 215.1 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Waco Mammoth National Monument and San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.4 hours each way, a round trip means 10.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Antonio, TX before the return drive.
