How far is Fort Smith, AR from Lamar, AR?
The driving distance from Fort Smith, AR to Lamar, AR is about 66.6 miles (107.2 km), with a travel time of about 01h 11m by car.
- The straight-line flight distance is about 57 miles (91.8 km).
- For a round trip, plan for roughly 02h 22m 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 11m.
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 Chance Showers And Thunderstorms
Partly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Fort Smith and Lamar.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fort Smith and Lamar.
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1
Start on Grand Avenue
2 mi · 4 min · Grand Avenue
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2
Turn left onto I 540 North, US 71 North
1595 ft · 41 sec
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3
Merge slight left
5.7 mi · 7 min
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4
Keep slight right to continue on I 40 East: Little Rock, Memphis
56.3 mi · 57 min
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5
Take the exit slight right toward US 64: Lamar
1375 ft · 34 sec
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6
Keep slight left
37 m · 3 sec
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7
Continue on East Main Street
1.9 mi · 3 min · East Main Street
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8
Turn left onto South Seminary Street
99 m · 16 sec · South Seminary Street
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9
Turn right onto Church Street
10 m · 2 sec · Church Street
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10
Arrive at your destination
0 m · 1 sec · Church Street
Car Route Details
A richer read on the saved driving route between Fort Smith and Lamar.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 40 East
Keep slight right to continue on I 40 East: Little Rock, Memphis
56.3 mi · 00h 57m
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 Chance Showers And Thunderstorms leaving Fort Smith and Partly Sunny then Slight Chance Showers And Thunderstorms near Lamar.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fort Smith to Lamar?
The road trip is about 66.6 miles (107.2 km) and usually takes 01h 11m 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 Fort Smith and 33.4 miles from Lamar.
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 9.6 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 4:08 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 Chance Showers And Thunderstorms around Fort Smith and Partly Sunny then Slight Chance Showers And Thunderstorms near Lamar.
Flight Path Map
This map shows the direct air route between Fort Smith and Lamar. Straight-line distance: 57.03 mi (91.78 km).
#1 Fort Smith
The second most populous city in Sebastian County, Arkansas.
| Population | 87,764 |
| Coordinates | 35.3859200, -94.3985500 |
| Altitude | 134 |
| Country | United States |
#2 Lamar
City in Arkansas, USA
| Population | 1,729 |
| Coordinates | 35.4406400, -93.3879600 |
| Altitude | 134 |
| Country | United States |
End: Lamar (-93.38796, 35.44064)
Estimated Travel Time
Distance: 107 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 13m |
| 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 57m |
| 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.