How far is Round Rock, TX from Laredo, TX?
The driving distance from Round Rock, TX to Laredo, TX is about 273.4 miles (440 km), with a travel time of about 03h 56m by car.
- The straight-line flight distance is about 235 miles (378.2 km).
- For a round trip, plan for roughly 07h 53m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 56m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Medina County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Partly Sunny
Driving Route Map
The map below follows the saved road route between Round Rock and Laredo.
Turn-by-Turn Driving Directions
Step-by-step road directions between Round Rock and Laredo.
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1
Start on South Mays Street
142 m · 19 sec · South Mays Street
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2
Turn left onto West Liberty Avenue
573 ft · 17 sec · West Liberty Avenue
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3
At the end of the road, turn right onto Round Rock Avenue
1915 ft · 52 sec · Round Rock Avenue
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4
Turn sharp left onto North Interstate 35
1228 ft · 20 sec · North Interstate 35
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5
Turn straight onto I 35 South
956 ft · 23 sec
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6
Merge slight left onto Purple Heart Trail
14.8 mi · 16 min · Purple Heart Trail
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7
Keep slight left to continue on Purple Heart Trail
49.8 mi · 55 min · Purple Heart Trail
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8
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
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9
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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10
Continue on North Pan Am Expressway
10 mi · 12 min · North Pan Am Expressway
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11
Keep slight left to continue on North Pan Am Expressway
6.4 mi · 8 min · North Pan Am Expressway
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12
Keep slight left to continue on North Pan Am Expressway
2.1 mi · 3 min · North Pan Am Expressway
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13
Keep slight right to continue on South Pan Am Expressway
10.4 mi · 12 min · South Pan Am Expressway
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14
Continue on Purple Heart Trail
144.5 mi · 2 hr 26 min · Purple Heart Trail
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15
Turn right onto Houston Street
1607 ft · 42 sec · Houston Street
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16
Turn left onto Salinas Avenue
83 m · 12 sec · Salinas Avenue
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17
Turn left onto Matamoros Street
93 m · 5 sec · Matamoros Street
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18
Arrive at your destination
0 m · 1 sec · Matamoros Street
Car Route Details
A richer read on the saved driving route between Round Rock and Laredo.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Purple Heart Trail
Continue on Purple Heart Trail
144 mi · 02h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms leaving Round Rock and Partly Sunny near Laredo.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Round Rock to Laredo?
The road trip is about 273.4 miles (440 km) and usually takes 03h 56m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Natalia is a useful midpoint, sitting about 126.7 miles from Round Rock and 146.6 miles from Laredo.
How much longer is the road route than the straight-line distance?
The direct path is about 235 miles (378.2 km), while the road route adds roughly 38.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:06 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.47 one way or $72.93 round trip. Estimated CO2 is about 85.8 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms around Round Rock and Partly Sunny near Laredo.
Stop Ideas Near Natalia
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Natalia.
San Antonio Station
San Marcos Station
Flight Path Map
This map shows the direct air route between Round Rock and Laredo. Straight-line distance: 235 mi (378.19 km).
#1 Round Rock
The fourth most populous city in Williamson County, Texas.
| Population | 137,575 |
| Coordinates | 30.5082600, -97.6789000 |
| Altitude | 224 |
| Country | United States |
#2 Laredo
The third most populous city in Texas and the center of the Laredo metropolitan area.
| Population | 263,640 |
| Coordinates | 27.5064100, -99.5075400 |
| Altitude | 126 |
| Country | United States |
End: Matamoros Street (-99.507507, 27.506385)
Estimated Travel Time
Distance: 440 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 06m |
| 40 mph (64.37 km/h) | 06h 50m |
| 50 mph (80.47 km/h) | 05h 28m |
| 60 mph (96.56 km/h) | 04h 33m |
| 70 mph (112.65 km/h) | 03h 54m |
| 80 mph (129 km/h) | 03h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $36.47 | $72.93 |
| Mid-grade | $4.25 | $41.03 | $82.06 |
| Premium | $4.59 | $44.30 | $88.61 |
| Diesel | $3.99 | $38.53 | $77.06 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.