If you are planning to travel from Fort Smith to Greenbrier, expect a straightforward 135.7-mile journey that typically takes about 2 hours and 24 minutes. This drive is best suited for a single-day trip, as the distance is manageable without the need for an overnight stay. You should budget approximately $21 for fuel to cover the entire distance. Since both cities are located within the Southeast region of Arkansas, you will remain in a familiar geographic setting throughout the trip. It is a practical, efficient route that gets you from point A to point B without unnecessary complexity.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
67.9 miles from Fort Smith, AR
A natural place for your longest stop of the day
, about 1h 11m into the drive
.
Main Roads
Road
Distance
Duration
US 71
117.5 mi
1h 57m
I 540
5.7 mi
6m
South Broadview Street
5.3 mi
7m
US Highway 65
3.2 mi
4m
Grand Avenue
2 mi
3m
Skyline Drive
1.5 mi
2m
East Main Street
<0.1 mi
<1m
Longest stretch:
US 71
— 117.5 mi, about 1h 57m
Turn-by-Turn Driving Directions
Step-by-step road directions between Fort Smith, AR and Greenbrier, AR.
1
Start on Grand Avenue
2.0 mi·3 min·Grand Avenue
2
Turn left
0.3 mi·40 sec
Toward I 540 North, US 71 North
3
Merge onto I 540; US 71
5.7 mi·6 min·I 540; US 71
4
Keep slight right at fork onto US 71
117 mi·1 hr 57 min·US 71
Toward I 40 East: Little Rock, MemphisUse the straight / slight right lanes.
5
Take the exit
0.2 mi·21 sec
Toward US 65 North, US 65B South
6
Keep slight left at fork
0.1 mi·19 sec
7
Turn left onto US 65B
1.5 mi·2 min·Skyline Drive
8
Continue on US 65
3.2 mi·4 min·US Highway 65
9
Continue on US 65
5.3 mi·7 min·South Broadview Street
10
Turn right onto AR 225
78 ft·1 sec·East Main Street
11
Arrive at destination
AR 225
Trip Plan
Since this is a relatively short trip with no required stops, you have plenty of flexibility to plan your departure around your personal schedule. You can easily complete the drive in one go, but keep in mind that you will be on the road for over two hours, so it is wise to ensure your vehicle is fueled up before you leave Fort Smith. Because you are spending 117.5 miles on US 71, keep an eye on your speed and maintain focus during that long, uninterrupted stretch. Use the lack of mandatory stops to your advantage by choosing your own break times as needed. Aim to depart outside of peak traffic hours to ensure you maintain your estimated 2-hour and 24-minute travel time.
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.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 67.9 miles from Fort Smith, AR, or about 1h 11m into the drive.
The longest continuous stretch on this route runs about 117.5 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 30 miles or 33m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 67.9 miles or 1h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 54m
Traffic, exits, and arrival timing usually matter more near Greenbrier, AR than in the middle of the route.
Before You Leave
+
Open the route before leaving Fort Smith, AR 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 Fort Smith, AR
This is one driving day of about 135.7 miles and 2h 24m.
Your first comfortable stop window is around 30 miles from Fort Smith, AR.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on US 71 for about 117.5 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 6
5 decision points cluster between mile 2 and 135.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
2 mi into trip|~3m in
Turn left toward I 540 North, US 71 North
Multiple destination signs - pick the right one
Toward I 540 North, US 71 North
8
8 mi into trip|~11m in|US 71
Keep slight right at fork onto US 71 toward I 40 East: Little Rock, Memphis
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 40 East: Little Rock, Memphis
5
125.5 mi into trip|~2h 8m in
Take the exit toward US 65 North, US 65B South
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 65 North, US 65B South
5
125.7 mi into trip|~2h 9m in
Keep slight left at fork
Highway fork - watch signs carefully
4
135.7 mi into trip|~2h 24m in|AR 225 / East Main Street
Turn right onto AR 225 / East Main Street
Navigation decision point
Fuel & Cost
Regular Gas
$20.49 one way
$40.99 round trip
$3.84/gal25.4 MPG avg48 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.21
$22.50
$44.99
premium
$4.56
$24.36
$48.71
diesel
$5.61
$29.96
$59.92
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$20
Meals
$25–$50
Total
$45–$70
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 47.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
40.7
0
$14.25
$6.51
Efficient EV
33.9
0
$11.87
$5.43
EV Truck/SUV
54.3
0
$19.00
$8.68
Gas CO2
47 kg
EV CO2
16 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 20, 2026
Origin
Fort Smith, AR
Afternoon
in Fort Smith on Tuesday
Local time
12:08 PM
CDT
Current temp
77°F
Unavailable
Live forecast
Destination
Greenbrier, AR
Afternoon
in Greenbrier on Tuesday
Local time
12:08 PM
CDT
Current temp
77°F
Unavailable
Live forecast
75°F
Clarksville, AR
68 mi in
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
2h 24m 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.
More Details
What kind of drive is this?
This trip is heavily highway-focused, with 93% of your time spent on major roads like US 71, I-540, and South Broadview Street. You will spend the vast majority of your time on US 71, which accounts for a 117.5-mile stretch that serves as the backbone of your journey. Because the route relies so heavily on high-speed thoroughfares, you can expect a consistent and predictable driving experience. While it lacks the stop-and-go nature of city driving, the reliance on highways means you should stay alert for changing traffic patterns. It is a functional drive designed for steady progress rather than winding exploration.
93% highway — fuel and pacing are the main things to plan.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 117.5 mi on US 71.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on US 71 and I 540. There are only a few real navigation decisions along the way. The trickiest moment comes around 2 miles in.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 2h 24m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 2 miles: Multiple destination signs - pick the right one; at 8 miles (US 71): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 125.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
Mostly flat terrain
618 ft321 ft
Total Climb
429 ft
Total Descent
502 ft
Highest Point
618 ft
~38.8 mi in
Elevation Range
297 ft
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 Fort Smith, AR to Greenbrier, AR, road signs begin pointing toward Memphis along the way.
Fort Smith is in northwest Arkansas and borders Oklahoma. It is the county seat of Sebastian County. The city has a population of 80,286 which makes it the third largest city in Arkansas behind Little Rock and Fayetteville. It is located in the River Valley of Arkansas between the Ouachita mountains in the south and the Boston and Ozark mountains of the north and a gateway city to the Ozarks.
The longest stretch is about 117.5 miles on US 71. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 2 miles: Multiple destination signs - pick the right one; at 8 miles (US 71): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 125.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Greenbrier, AR before heading back.
