Origin
Keller, TX
Afternoon in Keller on Sunday
Local time
2:53 PM
CDT
Current temp
79°F
Unavailable
Live forecast
Trip from Keller, TX to San Antonio, TX
Drive Time
5h 8m
Distance
283.1 mi
456 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$43
one way
Best Time to Leave
4 AM
4h 55m
★
6 AM
5h 8m
8 AM
5h 35m
10 AM
5h 18m
12 PM
5h 15m
3 PM
5h 19m
5 PM
5h 34m
8 PM
5h 0m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Keller, TX
Jeff Stapleton
San Antonio, TX
Wikimedia Commons
Trip Overview
Traveling from Keller to San Antonio covers 302.7 miles, typically taking about 4 hours and 26 minutes behind the wheel. Because this journey stays within the Great Plains region of Texas, you will experience consistent terrain throughout the trip. Budget approximately $45 for fuel to complete the trek. While you could technically tackle this distance in a single day, the turn-heavy nature of the local roads makes it a focused driving experience. One well-planned stop should be sufficient to keep you refreshed for the duration of the trip.
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
141.6 miles from Keller, TX
A natural place for your longest stop of the day , about 2h 32m into the drive .
Drive Character
Expect a unique driving experience that favors local navigation over high-speed transit. Unlike a standard interstate cruise, this route features zero highway miles, relying instead on South Elm Street, Bear Creek Parkway, and South Main Street to reach your destination. You will navigate a turn-heavy local drive where the longest uninterrupted stretch is 0 miles on South Elm Street. This constant need for attention keeps you engaged with the road's personality as you transition through the various local segments.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 31 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Purple Heart Trail is the longest continuous segment at about 99.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Purple Heart Trail and North South Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 145.7 miles in near I 35.
Route Complexity
8/10
Demanding - plan breaks and stay ahead of the key maneuvers
This is a demanding drive. With 19 significant decision points across 283.1 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 145.7 miles (I 35): Highway fork - watch signs carefully. Lane positioning matters here; at 201.6 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 275 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 19 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
6
145.7 mi into trip
|
~2h 37m in
|
I 35
Keep slight left at fork onto I 35
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
201.6 mi into trip
|
~3h 36m 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
7
275 mi into trip
|
~4h 57m 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
281.4 mi into trip
|
~5h 5m 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
281.9 mi into trip
|
~5h 5m 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...
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Purple Heart Trail | 99.6 mi | 1h 46m |
| North South Freeway | 84.6 mi | 1h 27m |
| I 35 | 55.8 mi | 58m |
| North Pan Am Expressway | 17 mi | 20m |
| I 35W TEXpress | 10.2 mi | 10m |
| North Jack Kultgen Expressway | 6.6 mi | 7m |
| Heritage Trace Parkway | 2.8 mi | 5m |
| Interstate Highway 35 | 1.7 mi | 1m |
Longest stretch:
Purple Heart Trail
— 99.6 mi, about 1h 46m
Turn-by-Turn Driving Directions
Step-by-step road directions between Keller, TX and San Antonio, TX.
1
Start on this road
16 ft
·
0 sec
·
this road
2
Continue on South Elm Street
0.5 mi
·
1 min
·
South Elm Street
3
Enter roundabout onto Bear Creek Parkway
17 ft
·
0 sec
·
Bear Creek Parkway
4
Continue on Bear Creek Parkway
0.2 mi
·
23 sec
·
Bear Creek Parkway
5
Turn left onto US 377
1.0 mi
·
1 min
·
South Main Street
6
Turn right onto Kroger Drive
1.0 mi
·
1 min
·
Kroger Drive
7
Continue on Heritage Trace Parkway
2.8 mi
·
5 min
·
Heritage Trace Parkway
Use the left lane.
8
Turn left onto North Freeway
510 ft
·
9 sec
·
North Freeway
9
Take the ramp
0.9 mi
·
1 min
Toward I 35W TEXPress South
10
Merge onto I 35W TEXpress
10 mi
·
10 min
·
I 35W TEXpress
Use the straight / slight right lanes.
11
Merge onto I 35W
85 mi
·
1 hr 27 min
·
North South Freeway
Use the straight / slight right lanes.
12
Continue on I 35; US 77
6.6 mi
·
7 min
·
North Jack Kultgen Expressway
Use the straight / slight right lanes.
13
Continue on I 35
38 mi
·
39 min
·
Purple Heart Trail
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 35
56 mi
·
58 min
·
I 35
Use the straight / slight right lanes.
15
Keep slight left at fork onto I 35; US 290
50 mi
·
54 min
·
Purple Heart Trail
Toward 32nd Street, Dean Keeton Street
Use the slight left lane.
16
Continue on I 35
1.7 mi
·
1 min
·
Interstate Highway 35
Use the straight / slight right lanes.
17
Continue on I 35
12 mi
·
12 min
·
Purple Heart Trail
Use the straight / slight right lanes.
18
Continue on I 35
10.0 mi
·
11 min
·
North Pan Am Expressway
Use the straight / slight right lanes.
19
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.
20
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.
21
Take the exit
0.1 mi
·
16 sec
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro Avenue
Use the slight right lane.
22
Turn straight onto East Elmira Street
526 ft
·
17 sec
·
East Elmira Street
Use the left / straight lanes.
23
Turn left onto North Main Avenue
0.2 mi
·
18 sec
·
North Main Avenue
Use the left / straight lanes.
24
Enter roundabout onto Navarro Street
159 ft
·
3 sec
·
Navarro Street
25
Continue on Navarro Street
111 ft
·
2 sec
·
Navarro Street
26
Keep slight right at fork onto North Main Avenue
0.4 mi
·
51 sec
·
North Main Avenue
Use the slight left / slight right lanes.
27
Turn right onto West Travis Street
222 ft
·
10 sec
·
West Travis Street
28
Turn left onto North Flores Street
0.2 mi
·
20 sec
·
North Flores Street
29
Continue on Military Plaza
392 ft
·
15 sec
·
Military Plaza
30
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
31
Arrive at destination
Dolorosa Street
Trip Plan
Given the 302.7-mile distance, aim to depart early in the morning to navigate the turn-heavy local sections during daylight hours. Since the route consists of local roads rather than highways, your average speed will be lower than a typical interstate trip, so keep your pace steady. Plan for at least one dedicated break to stretch your legs, as the continuous turns require more physical focus than a straight highway drive. With a fuel budget of $45, make sure to top off your tank before leaving Keller to avoid searching for stations on unfamiliar local roads. Flexibility is your greatest asset here, allowing you to adjust your pace to the local traffic flow without the pressure of a rigid highway schedule.
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 141.6 miles from Keller, TX, or about 2h 32m 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 80 miles or 1h 28m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 141.6 miles or 2h 32m 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 9m
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 Keller, 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 Keller, TX
This is one driving day of about 283.1 miles and 5h 8m.
Your first comfortable stop window is around 80 miles from Keller, 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.
Halfway Point
Midpoint
About 141.6 mi from Keller, TX · 2h 32m into the drive
Mid-route town
Meal stop
142 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 141.6 miles from Keller, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Purple Heart Trail if your tank is already low. That segment runs about 99.6 miles.
Arriving in San Antonio, TX
The final approach into San Antonio, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Antonio, TX.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$43.25 one way
$86.49 round trip
$3.88/gal
25.4 MPG avg
99 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $47.39 | $94.78 |
| premium | $4.59 | $51.17 | $102.34 |
| diesel | $5.64 | $62.90 | $125.79 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$43
Meals
$25–$50
Total
$68–$93
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 99.1 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $30 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 84.9 | 1 | $29.73 | $13.59 |
| Efficient EV | 70.8 | 0 | $24.77 | $11.32 |
| EV Truck/SUV | 113.2 | 1 | $39.63 | $18.12 |
Gas CO2
99 kg
EV CO2
33 kg (67% 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.
Destination
San Antonio, TX
Afternoon in San Antonio on Sunday
Local time
2:53 PM
CDT
Current temp
81°F
Unavailable
Live forecast
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
2 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 8m 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.
Frequently Asked Questions
The drive from Keller, TX to San Antonio, TX covers 283.1 miles and takes about 5h 8m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, North South Freeway, I 35. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 141.6 miles from Keller, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $43.25 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 19 significant decision points across 283.1 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.
The main spots that need attention: at 145.7 miles (I 35): Highway fork - watch signs carefully. Lane positioning matters here; at 201.6 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 275 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
The route from Keller, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
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