How far is Lamar, AR from Fort Smith, AR?
The driving distance from Lamar, AR to Fort Smith, AR is about 66.4 miles (106.9 km), with a travel time of about 01h 04m by car.
- The straight-line flight distance is about 57 miles (91.8 km).
- For a round trip, plan for roughly 02h 08m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 01h 04m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Franklin County, Arkansas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Slight Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Lamar and Fort Smith.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lamar and Fort Smith.
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1
Start on Church Street
10 m · 7 sec · Church Street
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2
Turn left onto South Seminary Street
99 m · 17 sec · South Seminary Street
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3
Turn right onto East Main Street
1.8 mi · 3 min · East Main Street
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4
Take the ramp right
946 ft · 23 sec
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5
Merge slight left
55.8 mi · 56 min
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6
Take the exit slight right toward I 540 South, US 71 South: Fort Smith
6.5 mi · 8 min
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7
Take the exit slight right toward Grand Avenue
1259 ft · 34 sec
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8
Turn right onto Grand Avenue
1.9 mi · 4 min · Grand Avenue
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9
Arrive at your destination
0 m · 1 sec · Grand Avenue
Car Route Details
A richer read on the saved driving route between Lamar and Fort Smith.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
East Main Street
Merge slight left
55.8 mi · 00h 56m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny then Slight Chance Showers And Thunderstorms leaving Lamar and Partly Sunny then Chance Showers And Thunderstorms near Fort Smith.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lamar to Fort Smith?
The road trip is about 66.4 miles (106.9 km) and usually takes 01h 04m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Ozark is a useful midpoint, sitting about 33.2 miles from Lamar and 33.2 miles from Fort Smith.
How much longer is the road route than the straight-line distance?
The direct path is about 57 miles (91.8 km), while the road route adds roughly 9.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:22 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.90 one way or $17.80 round trip. Estimated CO2 is about 20.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Showers And Thunderstorms around Lamar and Partly Sunny then Chance Showers And Thunderstorms near Fort Smith.
Flight Path Map
This map shows the direct air route between Lamar and Fort Smith. Straight-line distance: 57.03 mi (91.78 km).
#1 Lamar
City in Arkansas, USA
| Population | 1,729 |
| Coordinates | 35.4406400, -93.3879600 |
| Altitude | 134 |
| Country | United States |
#2 Fort Smith
The second most populous city in Sebastian County, Arkansas.
| Population | 87,764 |
| Coordinates | 35.3859200, -94.3985500 |
| Altitude | 134 |
| Country | United States |
End: Grand Avenue (-94.39855, 35.385923)
Estimated Travel Time
Distance: 107 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 12m |
| 40 mph (64.37 km/h) | 01h 39m |
| 50 mph (80.47 km/h) | 01h 19m |
| 60 mph (96.56 km/h) | 01h 06m |
| 70 mph (112.65 km/h) | 00h 56m |
| 80 mph (129 km/h) | 00h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $8.90 | $17.80 |
| Mid-grade | $4.26 | $10.01 | $20.02 |
| Premium | $4.63 | $10.87 | $21.74 |
| Diesel | $5.42 | $12.73 | $25.45 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Arkansas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.