Forney, TX to Killeen, TX is 168 miles and takes about 3 hours via South R L Thornton Freeway and Purple Heart Trail, with a fuel budget near $25 and enough daylight to finish in a day. This is a single-day trip primarily on highways, taking you through the Great Plains region in Texas. You'll be on the road for a relatively short time, making it a convenient option for a quick relocation or a visit. Expect a straightforward drive with most of your journey focused on efficient travel between these two Texas cities.
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
84 miles from Forney, TX
A natural place for your longest stop of the day
, about 1h 30m into the drive
.
Main Roads
Road
Distance
Duration
South R L Thornton Freeway
80.3 mi
1h 22m
Purple Heart Trail
37.9 mi
39m
Central Texas Expressway
13.1 mi
13m
Lyndon B Johnson Freeway
11.8 mi
12m
I 20
7.3 mi
7m
North Jack Kultgen Expressway
6.6 mi
7m
FM 740
3 mi
4m
West Central Texas Expressway
2.9 mi
3m
Longest stretch:
South R L Thornton Freeway
— 80.3 mi, about 1h 22m
Turn-by-Turn Driving Directions
Step-by-step road directions between Forney, TX and Killeen, TX.
1
Start on West Main Street
52 ft·5 sec·West Main Street
2
Turn right onto FM 740
1.1 mi·2 min·South Bois d'Arc Street
3
Continue on FM 740
2.0 mi·2 min·FM 740
4
At end of road, turn right onto FM 740
1.0 mi·1 min·FM 740
5
Take the ramp
0.3 mi·44 sec
Toward I 20 West: Dallas
6
Merge onto I 20
7.3 mi·7 min·I 20
Use the straight / slight right lanes.
7
Merge onto I 20
12 mi·12 min·Lyndon B Johnson Freeway
Use the straight / slight right lanes.
8
Take the exit
1.0 mi·2 min
Exit 467BToward I 35E South: WacoUse the straight / slight right lanes.
9
Merge onto I 35E
80 mi·1 hr 22 min·South R L Thornton Freeway
Use the straight / slight right lanes.
10
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
11
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 14; US 190
13 mi·13 min·Central Texas Expressway
Toward US 190 West: Killeen, Fort CavazosUse the straight / slight right lanes.
13
Take the exit
0.3 mi·32 sec
Exit 287Toward FM 3470: Rosewood Drive, Stan Schlueter LoopUse the slight right lane.
14
Turn straight onto West Central Texas Expressway
2.9 mi·3 min·West Central Texas Expressway
15
Turn right onto South W.S. Young Drive
1.3 mi·2 min·South W.S. Young Drive
16
Turn left onto US 190 Bus
1.0 mi·1 min·East Veterans Memorial Boulevard
17
Turn right
83 ft·8 sec
18
Turn right
74 ft·5 sec
19
Arrive at destination
Trip Plan
With a duration of just 3 hours, this is an easy same-day trip, so you have flexibility on when to depart. Leaving Forney in the morning will allow you to reach Killeen with plenty of daylight remaining. The estimated fuel cost is around $25, so ensure your tank is full before you leave, as there's only one recommended stop which likely isn't for extensive refueling. Keep an eye on traffic conditions around the Dallas-Fort Worth metroplex, especially if you depart during peak hours.
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 84 miles from Forney, TX, or about 1h 30m into the drive.
The longest continuous stretch on this route runs about 80.3 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 37 miles or 42m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 84 miles or 1h 30m 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 26m
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 Forney, 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 Forney, TX
This is one driving day of about 168 miles and 3h.
Your first comfortable stop window is around 37 miles from Forney, 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 South R L Thornton Freeway for about 80.3 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 4.5 and 162.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
4.5 mi into trip|~7m in|I 20
Merge onto I 20
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
11.8 mi into trip|~15m in|I 20 / Lyndon B Johnson Freeway
Merge onto I 20 / Lyndon B Johnson Freeway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
23.6 mi into trip|~27m in
Take the exit toward I 35E South: Waco
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 467B
Toward I 35E South: Waco
8
149.5 mi into trip|~2h 38m in|I 14; US 190 / Central Texas Expressway
Keep slight right at fork onto I 14; US 190 / Central Texas Expressway toward US 190 West: Killeen, Fort Cavazos
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward US 190 West: Killeen, Fort Cavazos
8
162.5 mi into trip|~2h 52m in
Take the exit toward FM 3470: Rosewood Drive, Stan Schlueter Loop
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 287
Toward FM 3470: Rosewood Drive, Stan Schlueter...
Fuel & Cost
Regular Gas
$25.39 one way
$50.77 round trip
$3.84/gal25.4 MPG avg59 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$27.79
$55.57
premium
$4.54
$30.00
$59.99
diesel
$5.61
$37.09
$74.18
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$25
Meals
$25–$50
Total
$50–$75
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 58.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $18 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
50.4
0
$17.64
$8.06
Efficient EV
42
0
$14.70
$6.72
EV Truck/SUV
67.2
0
$23.52
$10.75
Gas CO2
59 kg
EV CO2
20 kg (66% 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.
Forecast as of Apr 15, 2026
Origin
Forney, TX
Late night
in Forney on Sunday
Local time
2:30 AM
CDT
Current temp
60°F
Unavailable
Live forecast
Destination
Killeen, TX
Late night
in Killeen on Sunday
Local time
2:30 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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
3h 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Waco Mammoth National Monument
National Monument
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
4 mi from route
~10 min detour
Free
near mile 104.3
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is largely highway-focused, with 74% of the route utilizing major roadways. You'll experience a significant uninterrupted stretch of 80.3 miles on South R L Thornton Freeway early in your journey. The primary roads you'll navigate include the South R L Thornton Freeway, Purple Heart Trail, and Central Texas Expressway, indicating a consistent pace for much of the trip. The profile suggests a straightforward driving experience with limited deviations from main thoroughfares.
74% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 80.3 mi on South R L Thornton Freeway.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on South R L Thornton Freeway and Purple Heart Trail. You will hit about 13 points where you need to pay attention to lane position or signs. The trickiest moment comes around 4.5 miles in near I 20.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 168 miles you will encounter 13 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 4.5 miles (I 20): Merge point - match speed before joining. Lane positioning matters here; at 11.8 miles (I 20 / Lyndon B Johnson Freeway): Merge point - match speed before joining. Lane positioning matters here; at 23.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
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 Forney, TX to Killeen, TX, road signs begin pointing toward Fort Cavazos along the way.
Killeen is a city in the Central Hill Country of Texas. It is home to U.S. Army installation Fort Cavasos, one of the largest military bases in the world.
Doable as a same-day drive at 3h. Total distance: 168 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (74%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 80.3 miles on South R L Thornton Freeway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Killeen, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 4.5 miles (I 20): Merge point - match speed before joining. Lane positioning matters here; at 11.8 miles (I 20 / Lyndon B Johnson Freeway): Merge point - match speed before joining. Lane positioning matters here; at 23.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes — Waco Mammoth National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.0 hours each way, an in-and-out day trip would put you behind the wheel for 6.0 hours — manageable with a long break at Killeen, TX, but most travelers stay overnight.
