Origin
Selma, TX
Morning in Selma on Sunday
Local time
7:53 AM
CDT
Current temp
77°F
Unavailable
Live forecast
Trip from Selma, TX to San Antonio, TX
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
23m
Distance
18 mi
29 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 22m
★
6 AM
0h 24m
8 AM
0h 28m
10 AM
0h 25m
12 PM
0h 25m
3 PM
0h 25m
5 PM
0h 28m
8 PM
0h 23m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Selma, TX
Heber Vazquez
San Antonio, TX
Wikimedia Commons
Trip Overview
Selma, TX to San Antonio, TX is 18 miles and takes about 23 minutes via North Pan Am Expressway and I-35 N, with a fuel budget near $3 and enough daylight to finish in a day. This short trip stays within the Great Plains region, offering a straightforward drive primarily on highways. Given its brief duration, it's an ideal option if you're looking for a quick connection between these two Texas locales without a significant time commitment. You'll find this route efficient for a simple transfer of location.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| North Pan Am Expressway | 15.9 mi | 19m |
| Interstate 35 North | 0.9 mi | 1m |
| North Main Avenue | 0.6 mi | 1m |
| North Flores Street | 0.2 mi | <1m |
| East Elmira Street | <0.1 mi | <1m |
| Military Plaza | <0.1 mi | <1m |
| Dolorosa Street | <0.1 mi | <1m |
| Navarro Street | <0.1 mi | <1m |
Longest stretch:
North Pan Am Expressway
— 15.9 mi, about 19m
Turn-by-Turn Driving Directions
Step-by-step road directions between Selma, TX and San Antonio, TX.
1
Start on North Evans Road
29 ft
·
7 sec
·
North Evans Road
2
Turn left onto Interstate 35 North
0.9 mi
·
1 min
·
Interstate 35 North
3
Take the ramp
504 ft
·
12 sec
4
Merge onto I 35
8.9 mi
·
10 min
·
North Pan Am Expressway
Use the straight / slight right lanes.
5
Keep slight left at fork onto I 35
6.4 mi
·
8 min
·
North Pan Am Expressway
Toward I 35 South
Use the straight / slight right lanes.
6
Keep slight left at fork onto I 35
0.6 mi
·
41 sec
·
North Pan Am Expressway
Toward I 35 South: Lower Level, Laredo
Use the slight left lane.
7
Take the exit
0.1 mi
·
16 sec
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro Avenue
Use the slight right lane.
8
Turn straight onto East Elmira Street
526 ft
·
17 sec
·
East Elmira Street
Use the left / straight lanes.
9
Turn left onto North Main Avenue
0.2 mi
·
18 sec
·
North Main Avenue
Use the left / straight lanes.
10
Enter roundabout onto Navarro Street
159 ft
·
3 sec
·
Navarro Street
11
Continue on Navarro Street
111 ft
·
2 sec
·
Navarro Street
12
Keep slight right at fork onto North Main Avenue
0.4 mi
·
51 sec
·
North Main Avenue
Use the slight left / slight right lanes.
13
Turn right onto West Travis Street
222 ft
·
10 sec
·
West Travis Street
14
Turn left onto North Flores Street
0.2 mi
·
20 sec
·
North Flores Street
15
Continue on Military Plaza
392 ft
·
15 sec
·
Military Plaza
16
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
17
Arrive at destination
Dolorosa Street
Heads-up: tricky spots
5 of 125 decision points cluster between mile 9.9 and 17.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
9.9 mi into trip
|
~12m in
|
I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 35 South
8
16.3 mi into trip
|
~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
16.9 mi into trip
|
~21m 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...
6
17.1 mi into trip
|
~21m in
|
North Main Avenue
Turn left onto North Main Avenue
Lane positioning matters here
Use the left / straight lanes.
6
17.3 mi into trip
|
~22m in
|
North Main Avenue
Keep slight right at fork onto North Main Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Fuel & Cost
Regular Gas
$2.72 one way
$5.44 round trip
$3.84/gal
25.4 MPG avg
6 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $2.98 | $5.95 |
| premium | $4.54 | $3.21 | $6.43 |
| diesel | $5.61 | $3.97 | $7.95 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 6.3 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.4 | 0 | $1.89 | $0.86 |
| Efficient EV | 4.5 | 0 | $1.58 | $0.72 |
| EV Truck/SUV | 7.2 | 0 | $2.52 | $1.15 |
Gas CO2
6 kg
EV CO2
2 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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.
Destination
San Antonio, TX
Morning in San Antonio on Sunday
Local time
7:53 AM
CDT
Current temp
77°F
Unavailable
Live forecast
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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
23m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive is overwhelmingly highway-focused, with 93% of the journey taking place on main roads like the North Pan Am Expressway and Interstate 35 North. You'll experience a long, uninterrupted stretch of 15.9 miles on the North Pan Am Expressway, meaning minimal distractions and consistent travel speeds. The character is primarily that of a functional, high-speed connection rather than a winding scenic byway. Expect a smooth, direct experience as you navigate between these two Texas points.
93% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 15.9 mi on North Pan Am Expressway.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on North Pan Am Expressway and Interstate 35 North. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 9.9 miles in near I 35 / North Pan Am Expressway.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 12 decision points packed into just 18 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 23m.
Where does it get tricky?
The main spots that need attention: at 9.9 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 16.3 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 16.9 miles: Exit ramp - move to the correct lane early. 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.
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 Selma, TX to San Antonio, TX, road signs begin pointing toward Laredo along the way.
Laredo
16.3 mi in
|
~20m
|
via I 35
About the Cities
Arriving in San Antonio, TX
Full guide →Founded 1718
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
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 23m. Total distance: 18 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
23m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (93%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 15.9 miles on North Pan Am Expressway. The full list of main roads is in the Roads section above.
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.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 9.9 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 16.3 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 16.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at San Antonio, TX before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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