Origin
San Antonio, TX
Morning in San Antonio on Wednesday
Local time
7:15 AM
CDT
Current temp
77°F
Unavailable
Live forecast
Trip from San Antonio, TX to Killeen, TX
Data updated 22 minutes ago
Drive Time
2h 45m
Distance
145.6 mi
234 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$22
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
2h 35m
★
6 AM
2h 46m
8 AM
3h 7m
10 AM
2h 53m
12 PM
2h 51m
3 PM
2h 54m
5 PM
3h 6m
8 PM
2h 39m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
San Antonio, TX
Wikimedia Commons
Killeen, TX
Wikimedia Commons
Trip Overview
This 145.6-mile drive from San Antonio, TX, to Killeen, TX, is a manageable one-day trip, taking approximately 2 hours and 45 minutes. You'll primarily be on the Purple Heart Trail and State Highway 195, with a portion on the North Pan Am Expressway, making for a mixed driving experience. With an estimated fuel cost of $22, this journey through the Great Plains region of Texas is an efficient option for a quick getaway or transit. The route is well-suited for a single day, allowing you to reach your destination without needing an overnight stop.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
72.8 miles from San Antonio, TX
A natural place for your longest stop of the day , about 1h 22m into the drive .
Loading map...
Drive Character
Expect a 'Mixed drive' profile for this 145.6-mile route. While 36% of your journey will be on highways, you'll also encounter state highways, offering a change of pace. The longest uninterrupted stretch you'll experience is 89 miles on the Purple Heart Trail, providing a substantial period of consistent travel. This route offers a blend of faster-paced highway sections and more varied road conditions as you progress from San Antonio to Killeen, keeping the driving engaging.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 23 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 89 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.9 miles in.
Route Complexity
8/10
Demanding - plan breaks and stay ahead of the key maneuvers
This is a demanding drive. With 14 significant decision points across 145.6 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 0.9 miles: Multiple destination signs - pick the right one; at 1.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 10.7 miles (North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 14 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
0.9 mi into trip
|
~1m in
Take the ramp toward US 281 North, I 37 North
Multiple destination signs - pick the right one
Toward US 281 North, I 37 North
7
1.9 mi into trip
|
~3m in
Take the exit toward I 35 North: Austin
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 142A
Toward I 35 North: Austin
7
10.7 mi into trip
|
~14m in
|
North Pan Am Expressway
Keep slight left at fork onto North Pan Am Expressway toward I 35: Austin
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 35: Austin
8
109 mi into trip
|
~2h 2m in
Take the exit toward TX 195 North: Florence, Killeen
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 266
Toward TX 195 North: Florence, Killeen
8
110.2 mi into trip
|
~2h 4m in
Keep slight right at fork toward TX 195 North: Florence, Killeen
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Toward TX 195 North: Florence, Killeen
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Purple Heart Trail | 89 mi | 1h 37m |
| State Highway 195 | 34 mi | 38m |
| North Pan Am Expressway | 15.6 mi | 18m |
| Interstate Highway 35 | 1.9 mi | 2m |
| West Veterans Memorial Boulevard | 0.9 mi | 1m |
| William J Bordelon Freeway | 0.8 mi | <1m |
| East Market Street | 0.4 mi | <1m |
| West Market Street | 0.4 mi | <1m |
Longest stretch:
Purple Heart Trail
— 89 mi, about 1h 37m
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio, TX and Killeen, TX.
1
Start on Dolorosa Street
143 ft
·
4 sec
·
Dolorosa Street
2
Continue on West Market Street
0.4 mi
·
42 sec
·
West Market Street
3
Continue on East Market Street
0.4 mi
·
45 sec
·
East Market Street
4
Turn left
363 ft
·
13 sec
Use the left lane.
5
Turn straight onto East Commerce Street
216 ft
·
12 sec
·
East Commerce Street
6
Take the ramp
0.2 mi
·
28 sec
Toward US 281 North, I 37 North
7
Merge onto I 37; US 281
0.8 mi
·
55 sec
·
William J Bordelon Freeway
8
Take the exit
0.6 mi
·
1 min
Exit 142A
Toward I 35 North: Austin
Use the slight right lane.
9
Merge onto I 35
8.2 mi
·
10 min
·
North Pan Am Expressway
Use the straight / slight right lanes.
10
Keep slight left at fork onto North Pan Am Expressway
7.4 mi
·
8 min
·
North Pan Am Expressway
Toward I 35: Austin
Use the straight / slight right lanes.
11
Continue on I 35
12 mi
·
12 min
·
Purple Heart Trail
Use the straight / slight right lanes.
12
Continue on I 35
1.9 mi
·
2 min
·
Interstate Highway 35
Use the straight / slight right lanes.
13
Continue on I 35
48 mi
·
52 min
·
Purple Heart Trail
Use the straight / slight right lanes.
14
Keep slight right at fork onto I 35; US 290
29 mi
·
32 min
·
Purple Heart Trail
Use the straight / slight right lanes.
15
Take the exit
1.1 mi
·
2 min
Exit 266
Toward TX 195 North: Florence, Killeen
Use the straight / slight right lanes.
16
Keep slight right at fork
0.2 mi
·
21 sec
Toward TX 195 North: Florence, Killeen
Use the slight left / slight right lanes.
17
Continue on North Interstate 35
0.3 mi
·
25 sec
·
North Interstate 35
18
Turn left onto TX 195
34 mi
·
38 min
·
State Highway 195
Use the left / straight lanes.
19
Turn slight right
263 ft
·
9 sec
Use the right lane.
20
Turn slight right onto US 190 Bus
0.9 mi
·
1 min
·
West Veterans Memorial Boulevard
Use the right lane.
21
Turn left
83 ft
·
8 sec
22
Turn right
74 ft
·
5 sec
23
Arrive at destination
Trip Plan
Given the relatively short 2-hour and 45-minute duration, this 145.6-mile trip offers plenty of flexibility. Consider departing in the morning to maximize your day at your destination or in Killeen. With only one recommended stop, you can easily manage your breaks. Keep an eye on your fuel, as the estimated cost is $22, and plan to refuel before you leave San Antonio or during your single planned stop to avoid any issues. A specific tip for this route is to be aware of potential traffic, especially on the Purple Heart Trail, as it can be a busy corridor.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 72.8 miles from San Antonio, TX, or about 1h 22m into the drive.
The longest continuous stretch on this route runs about 89 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 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 72.8 miles or 1h 22m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 15m
Traffic, exits, and arrival timing usually matter more near Killeen, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving San Antonio, 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 San Antonio, TX
This is one driving day of about 145.6 miles and 2h 45m.
Your first comfortable stop window is around 80 miles from San Antonio, 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 89 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 72.8 mi from San Antonio, TX · 1h 22m into the drive
Mid-route town
Meal stop
73 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 72.8 miles from San Antonio, 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 89 miles.
Arriving in Killeen, TX
The final approach into Killeen, 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 Killeen, 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
$22.00 one way
$44.00 round trip
$3.84/gal
25.4 MPG avg
51 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $24.08 | $48.16 |
| premium | $4.54 | $26.00 | $51.99 |
| diesel | $5.61 | $32.15 | $64.29 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$22
Meals
$25–$50
Total
$47–$72
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 50.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $15 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 43.7 | 0 | $15.29 | $6.99 |
| Efficient EV | 36.4 | 0 | $12.74 | $5.82 |
| EV Truck/SUV | 58.2 | 0 | $20.38 | $9.32 |
Gas CO2
51 kg
EV CO2
17 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
Killeen, TX
Morning in Killeen on Wednesday
Local time
7:15 AM
CDT
Current temp
60°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
17 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 45m 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.
Frequently Asked Questions
The drive from San Antonio, TX to Killeen, TX covers 145.6 miles and takes about 2h 45m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, State Highway 195, North Pan Am Expressway. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 72.8 miles from San Antonio, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $22.00 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 14 significant decision points across 145.6 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 0.9 miles: Multiple destination signs - pick the right one; at 1.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 10.7 miles (North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
The route from San Antonio, TX to Killeen, TX does not surface many named destination signs beyond the main corridor.
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