How far is Austin, TX from Fort Clark Springs, TX?
The driving distance from Austin, TX to Fort Clark Springs, TX is about 201 miles (323.5 km), with a travel time of about 03h 51m by car.
- The straight-line flight distance is about 173.8 miles (279.7 km).
- For a round trip, plan for roughly 07h 43m 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 51m.
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.
Town in the U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Austin and Fort Clark Springs.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and Fort Clark Springs.
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1
Start on East 5th Street
2551 ft · 1 min · East 5th Street
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2
At the end of the road, turn right onto North Interstate 35
1893 ft · 40 sec · North Interstate 35
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3
Take the ramp slight left toward I 35 South
899 ft · 22 sec
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4
Merge slight left onto Purple Heart Trail
46.4 mi · 50 min · Purple Heart Trail
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5
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
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6
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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7
Continue on North Pan Am Expressway
6.9 mi · 8 min · North Pan Am Expressway
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8
Take the exit slight right toward I 410 West, Loop 368 South
2289 ft · 56 sec
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9
Keep slight left to continue on I 410 West
1680 ft · 33 sec
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10
Merge slight left onto Connally Loop
19.3 mi · 22 min · Connally Loop
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11
Take the exit slight right toward US 90 West: Del Rio
1.4 mi · 3 min
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12
Merge slight left onto Cleto Rodriguez Freeway
3.2 mi · 3 min · Cleto Rodriguez Freeway
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13
Continue on West US Highway 90
25.4 mi · 29 min · West US Highway 90
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14
Continue on 19th Street
2.1 mi · 4 min · 19th Street
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15
Continue on US Highway 90 West
37.7 mi · 43 min · US Highway 90 West
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16
Continue on East Main Street
4.9 mi · 6 min · East Main Street
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17
Continue on West US Highway 90
37.4 mi · 43 min · West US Highway 90
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18
Continue on East Military Highway
2339 ft · 35 sec · East Military Highway
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19
Turn left onto Fort Clark Road
992 ft · 44 sec · Fort Clark Road
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20
Turn right onto Mackenzie Road
150 m · 22 sec · Mackenzie Road
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21
Turn left onto Colony Row
34 m · 6 sec · Colony Row
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22
At the end of the road, turn right onto Colony Row
600 ft · 26 sec · Colony Row
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23
Arrive at your destination
0 m · 1 sec · Colony Row
Car Route Details
A richer read on the saved driving route between Austin and Fort Clark Springs.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Purple Heart Trail
Merge slight left onto Purple Heart Trail
46.4 mi · 00h 50m
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.
Mostly Sunny leaving Austin and Chance Rain Showers near Fort Clark Springs.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Austin to Fort Clark Springs?
The road trip is about 201 miles (323.5 km) and usually takes 03h 51m 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?
Castroville is a useful midpoint, sitting about 100.4 miles from Austin and 100.6 miles from Fort Clark Springs.
How much longer is the road route than the straight-line distance?
The direct path is about 173.8 miles (279.7 km), while the road route adds roughly 27.2 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 9:16 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.22 one way or $54.44 round trip. Estimated CO2 is about 63 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Austin and Chance Rain Showers near Fort Clark Springs.
Stop Ideas Near Castroville
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 Castroville.
San Antonio Station
San Marcos Station
Flight Path Map
This map shows the direct air route between Austin and Fort Clark Springs. Straight-line distance: 173.82 mi (279.74 km).
#1 Austin
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
| Population | 995,484 |
| Coordinates | 30.2671500, -97.7430600 |
| Altitude | 149 |
| Country | United States |
#2 Fort Clark Springs
Situated in southwest Texas within Kinney County at an elevation of 1152 feet, this locality is centered around the large artesian Las Moras Springs.
| Population | 0 |
| Coordinates | 29.3060700, -100.4220200 |
| Altitude | 351 |
| Country | United States |
End: Fort Clark Springs (-100.42202, 29.30607)
Estimated Travel Time
Distance: 323 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 41m |
| 40 mph (64.37 km/h) | 05h 01m |
| 50 mph (80.47 km/h) | 04h 01m |
| 60 mph (96.56 km/h) | 03h 21m |
| 70 mph (112.65 km/h) | 02h 52m |
| 80 mph (129 km/h) | 02h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.84 | $27.22 | $54.44 |
| Mid-grade | $4.35 | $30.82 | $61.64 |
| Premium | $4.72 | $33.49 | $66.97 |
| Diesel | $5.78 | $40.95 | $81.90 |
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 · Oct 15, 2026