How far is San Antonio, TX from Lake Dunlap, TX?
The driving distance from San Antonio, TX to Lake Dunlap, TX is about 36.1 miles (58.1 km), with a travel time of about 00h 47m by car.
- The straight-line flight distance is about 30.7 miles (49.4 km).
- For a round trip, plan for roughly 01h 35m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 00h 47m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Bexar County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between San Antonio and Lake Dunlap.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Lake Dunlap.
-
1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
-
2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
-
3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
-
4
Turn left
111 m · 13 sec
-
5
Turn straight onto East Commerce Street
66 m · 13 sec · East Commerce Street
-
6
Take the ramp sharp left toward US 281 North, I 37 North
1159 ft · 28 sec
-
7
Merge slight left onto William J Bordelon Freeway
1.3 km · 56 sec · William J Bordelon Freeway
-
8
Take the exit slight right toward I 35 North: Austin
2907 ft · 1 min
-
9
Merge slight left onto North Pan Am Expressway
8.2 mi · 10 min · North Pan Am Expressway
-
10
Keep slight left to continue on North Pan Am Expressway
7.4 mi · 8 min · North Pan Am Expressway
-
11
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
-
12
Continue on Interstate Highway 35
1.2 mi · 1 min · Interstate Highway 35
-
13
Take the exit slight right toward FM 725: Seguin Avenue, Lake McQueeney
963 ft · 23 sec
-
14
Turn straight onto Interstate 35 South
1 km · 1 min · Interstate 35 South
-
15
Turn right onto South Seguin Avenue
2.5 mi · 4 min · South Seguin Avenue
-
16
Turn left onto East Zipp Road
1.1 mi · 2 min · East Zipp Road
-
17
Turn right onto Potthast Drive
1920 ft · 1 min · Potthast Drive
-
18
Turn right
130 m · 31 sec
-
19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Antonio and Lake Dunlap.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Purple Heart Trail
Continue on Purple Heart Trail
11.9 mi · 00h 13m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Cloudy leaving San Antonio and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Lake Dunlap.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Lake Dunlap?
The road trip is about 36.1 miles (58.1 km) and usually takes 00h 47m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Selma is a useful midpoint, sitting about 18.1 miles from San Antonio and 18.1 miles from Lake Dunlap.
How much longer is the road route than the straight-line distance?
The direct path is about 30.7 miles (49.4 km), while the road route adds roughly 5.4 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:54 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.80 one way or $9.60 round trip. Estimated CO2 is about 11.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Lake Dunlap.
Stop Ideas Near Selma
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
New Braunfels Parks and Recreation
Schertz EMS
Converse City Hall
Castle Hills
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Selma.
San Antonio Station
San Marcos Station
Austin
Flight Path Map
This map shows the direct air route between San Antonio and Lake Dunlap. Straight-line distance: 30.72 mi (49.44 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 Lake Dunlap
Census-designated place in Texas
| Population | 1,934 |
| Coordinates | 29.6757800, -98.0722300 |
| Altitude | 180 |
| Country | United States |
End: Lake Dunlap (-98.07223, 29.67578)
Estimated Travel Time
Distance: 58 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 12m |
| 40 mph (64.37 km/h) | 00h 54m |
| 50 mph (80.47 km/h) | 00h 43m |
| 60 mph (96.56 km/h) | 00h 36m |
| 70 mph (112.65 km/h) | 00h 30m |
| 80 mph (129 km/h) | 00h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $4.80 | $9.60 |
| Mid-grade | $4.25 | $5.40 | $10.80 |
| Premium | $4.59 | $5.83 | $11.66 |
| Diesel | $3.99 | $5.07 | $10.14 |
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 · May 06, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.