Origin
Glenn Heights, TX
Afternoon in Glenn Heights on Sunday
Local time
4:57 PM
CDT
Current temp
72°F
Unavailable
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
2h 29m
Distance
139.4 mi
224 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$21
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Glenn Heights, TX
Alfo Medeiros
Killeen, TX
Wikimedia Commons
Planning a trip from Glenn Heights, TX, to Killeen, TX? This 139.4-mile drive will take you about 2 hours and 29 minutes, making it a perfect candidate for a single-day adventure. You'll spend about 68% of your time on the highway, with a projected fuel cost of around $21. The route focuses on major roadways, so expect a straightforward journey. Both Glenn Heights and Killeen are situated within the Great Plains region, so you won't be crossing major geographical divides on this Texas-bound excursion. This drive is designed for efficiency, getting you to your destination with minimal fuss.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
69.7 miles from Glenn Heights, TX
A natural place for your longest stop of the day , about 1h 13m into the drive .
| Road | Distance | Duration |
|---|---|---|
| I 35E | 72.7 mi | 1h 13m |
| Purple Heart Trail | 37.9 mi | 39m |
| Central Texas Expressway | 13.1 mi | 13m |
| North Jack Kultgen Expressway | 6.6 mi | 7m |
| West Central Texas Expressway | 2.9 mi | 3m |
| Ovilla Road | 1.9 mi | 3m |
| South W.S. Young Drive | 1.3 mi | 2m |
| South Hampton Road | 1.2 mi | 2m |
Step-by-step road directions between Glenn Heights, TX and Killeen, TX.
Start on South Hampton Road
At end of road, turn left onto FM 664
Turn right onto Plaza Drive
At end of road, turn right onto North Interstate 35E
Take the ramp
Merge onto I 35E
Continue on I 35; US 77
Continue on I 35
Keep slight right at fork onto I 14; US 190
Take the exit
Turn straight onto West Central Texas Expressway
Turn right onto South W.S. Young Drive
Turn left onto US 190 Bus
Turn right
Turn right
Arrive at destination
For this 2 hour and 29 minute drive, an early morning departure from Glenn Heights is ideal to bypass any potential commuter traffic as you head towards I 35E. With 139.4 miles and a manageable duration, you won't need to split this into an overnight trip; flexibility is your advantage. While there are no specific stops recommended in the data, keep an eye on your fuel, especially during the 72.7-mile stretch on I 35E, and plan for a brief rest stop around the halfway point. The $21 fuel estimate is a good budget baseline for this journey.
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.
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 31 miles or 34m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 69.7 miles or 1h 13m 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
Traffic, exits, and arrival timing usually matter more near Killeen, TX than in the middle of the route.
Open the route before leaving Glenn Heights, 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 Glenn Heights, TX
This is one driving day of about 139.4 miles and 2h 29m.
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
70 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.
A short stop after about 31 miles helps settle the day before fatigue starts building.
The midpoint is around 69.7 miles from Glenn Heights, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 35E if your tank is already low. That segment runs about 72.7 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
5 decision points cluster between mile 3.1 and 133.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Turn right onto Plaza Drive
Lane positioning matters here
At end of road, turn right onto North Interstate 35E
Complex interchange - multiple decisions in a short stretch
Take the ramp toward I 35E South
Lane positioning matters here
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
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
Regular Gas
$21.06 one way
$42.13 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $23.06 | $46.11 |
| premium | $4.54 | $24.89 | $49.78 |
| diesel | $5.61 | $30.78 | $61.56 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$21
Meals
$25–$50
Total
$46–$71
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 48.8 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 | 41.8 | 0 | $14.64 | $6.69 |
| Efficient EV | 34.9 | 0 | $12.20 | $5.58 |
| EV Truck/SUV | 55.8 | 0 | $19.52 | $8.92 |
Gas CO2
49 kg
EV CO2
16 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.
Current conditions at both ends of the drive.
Origin
Afternoon in Glenn Heights on Sunday
Local time
4:57 PM
CDT
Current temp
72°F
Unavailable
Destination
Afternoon in Killeen on Sunday
Local time
4:57 PM
CDT
Current temp
60°F
Unavailable
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
This drive is primarily a highway-focused experience, with 68% of the 139.4 miles taking place on major roads like I 35E and the Central Texas Expressway. You'll encounter the Purple Heart Trail along the way, adding a touch of historical significance. The longest uninterrupted stretch you'll navigate is 72.7 miles on I 35E, so be prepared for a sustained period of highway driving. While not explicitly scenic, the focus here is on covering distance effectively, transitioning smoothly between these main arteries.
This is a straightforward highway drive that stays mostly on I 35E and Purple Heart Trail. You will hit about 11 points where you need to pay attention to lane position or signs. The trickiest moment comes around 3.1 miles in near Plaza Drive.
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 139.4 miles you will encounter 11 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 3.1 miles (Plaza Drive): Lane positioning matters here; at 3.2 miles (North Interstate 35E): Complex interchange - multiple decisions in a short stretch; at 3.3 miles: Lane positioning matters here.
Mostly flat terrain
Total Climb
907 ft
Total Descent
756 ft
Highest Point
840 ft
~39.8 mi in
Elevation Range
433 ft
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Glenn Heights, TX to Killeen, TX, road signs begin pointing toward Fort Cavazos along the way.
Fort Cavazos
Founded 1969
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.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Weekend Trip
Doable as a same-day drive at 2h 29m. Total distance: 139.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 29m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (68%). Some complex stretches to watch for.
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and USGS 3DEP for elevation. See our methodology for refresh cadence and limitations.
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