How far is Harlingen, TX from Fort Smith, AR?
The driving distance from Harlingen, TX to Fort Smith, AR is about 780.3 miles (1255.7 km), with a travel time of about 14h 30m by car.
- The straight-line flight distance is about 664.7 miles (1069.7 km).
- For a round trip, plan for roughly 29h 00m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 14h 30m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 McLennan County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Harlingen and Fort Smith.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harlingen and Fort Smith.
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1
Start on South Commerce Street
4 m · 4 sec · South Commerce Street
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2
Turn left onto West Harrison Avenue
1.3 mi · 2 min · West Harrison Avenue
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3
Turn right onto North Expressway 77
130 m · 12 sec · North Expressway 77
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4
Take the ramp slight left toward I 69E North, US 77 North
884 ft · 22 sec
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5
Merge slight left onto U.S. Highway 77
88 mi · 1 hr 38 min · U.S. Highway 77
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6
Keep slight left
1157 ft · 14 sec
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7
Merge slight right
1.2 mi · 1 min
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8
Continue on U.S. Highway 77
11.6 mi · 13 min · U.S. Highway 77
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9
Take the exit slight right
1410 ft · 34 sec
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10
Turn straight onto US Highway 77 Frontage Road
148 m · 18 sec · US Highway 77 Frontage Road
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11
Turn right onto County Road 10
1 mi · 4 min · County Road 10
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12
Turn left onto County Road 79
4 mi · 16 min · County Road 79
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13
Turn left onto County Road 18
848 ft · 44 sec · County Road 18
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14
Turn sharp right
1.1 mi · 3 min
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15
Take the ramp straight
2351 ft · 57 sec
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16
Merge slight left onto Driscoll Bypass
2.3 mi · 2 min · Driscoll Bypass
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17
Continue on U.S. Highway 77
13.2 mi · 14 min · U.S. Highway 77
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18
Merge slight left
1.4 mi · 1 min
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19
Keep slight left
1.3 mi · 1 min
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20
Continue straight
18.3 mi · 18 min
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21
Take the exit slight right toward TX 359: Mathis, Skidmore
1275 ft · 33 sec
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22
Turn right onto State Highway 359
12.4 mi · 17 min · State Highway 359
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23
At the end of the road, turn left onto South 8th Street
1.3 km · 56 sec · South 8th Street
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24
Continue on US Highway 181 South
40.2 mi · 46 min · US Highway 181 South
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25
Continue on South Sunset Strip Drive
1.2 mi · 1 min · South Sunset Strip Drive
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26
Turn right onto West Main Street
1.2 km · 1 min · West Main Street
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27
Keep slight left to continue on East Main Street
71 m · 4 sec · East Main Street
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28
Continue on Helena Road
8.4 mi · 11 min · Helena Road
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29
Turn straight onto State Highway 80
23.6 mi · 26 min · State Highway 80
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30
Continue on South Nixon Avenue
1 mi · 2 min · South Nixon Avenue
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31
Continue on State Highway 80 North
30.8 mi · 35 min · State Highway 80 North
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32
Continue on US 183
10.1 mi · 12 min · US 183
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33
Continue on South Colorado Street
4.9 mi · 9 min · South Colorado Street
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34
Continue on United States Highway 183
1282 ft · 17 sec · United States Highway 183
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35
Keep slight left to continue on TX 130 Toll North: Austin, Waco
2447 ft · 35 sec
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36
Merge slight left onto Pickle Parkway
58.5 mi · 55 min · Pickle Parkway
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37
Keep slight left to continue on I 35 North: Waco
2045 ft · 50 sec
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38
Merge slight left onto Purple Heart Trail
64.7 mi · 1 hr 6 min · Purple Heart Trail
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39
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
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40
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
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41
Keep slight right to continue on I 35E: Dallas
56.2 mi · 58 min
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42
Take the exit slight right toward I 30 East: Texarkana, Riverfront Boulevard, Griffin Street
2094 ft · 42 sec
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43
Keep slight left to continue on I 35E North, I 30 West: Denton, Fort Worth, Texarkana
129 m · 6 sec
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44
Keep slight right to continue on I 30 East: Texarkana, Convention Center
2206 ft · 33 sec
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45
Keep slight left to continue on I 30 East: Texarkana
117 m · 6 sec
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46
Continue on East R L Thornton Freeway
1.2 km · 1 min · East R L Thornton Freeway
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47
Take the exit slight right toward I 45, US 75: Houston, McKinney
2421 ft · 46 sec
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48
Keep slight left to continue on US 75 North: McKinney
2512 ft · 1 min
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49
Keep slight right to continue on US 75 North: McKinney, Bryan Street East
1697 ft · 27 sec
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50
Merge slight left onto Julius Schepps Freeway
1.2 km · 49 sec · Julius Schepps Freeway
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51
Continue on North Central Expressway
45 mi · 48 min · North Central Expressway
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52
Continue on South Henry Hynds Expressway
10.1 mi · 10 min · South Henry Hynds Expressway
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53
Continue on South Sam Rayburn Freeway
28.4 mi · 30 min · South Sam Rayburn Freeway
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54
Continue on US 69 North, US 75 North: Durant
1.1 mi · 1 min
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55
Continue on US 69 North, US 75 North: Durant
26.4 mi · 29 min
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56
Continue on US 69 North, US 75 North: Atoka
5.9 mi · 6 min
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57
Continue on South Jefferson Street
2.3 mi · 3 min · South Jefferson Street
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58
Continue straight
36.1 mi · 42 min
-
59
Continue straight
11.6 mi · 16 min
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60
Keep slight left to continue on South George Nigh Expressway
40.5 mi · 45 min · South George Nigh Expressway
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61
Take the exit slight right toward I 40 East: Fort Smith
3139 ft · 1 min
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62
Merge slight left onto Vietnam Veteran's Memorial Highway
59.7 mi · 1 hr 1 min · Vietnam Veteran's Memorial Highway
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63
Take the exit slight right toward US 64: Roland, Fort Smith
2140 ft · 53 sec
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64
Merge slight left onto West Ray Fine Boulevard
6.3 mi · 9 min · West Ray Fine Boulevard
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65
Turn left onto North 11th Street
1083 ft · 25 sec · North 11th Street
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66
Turn slight right onto Grand Avenue
1.1 mi · 2 min · Grand Avenue
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67
Arrive at your destination
0 m · 1 sec · Grand Avenue
Car Route Details
A richer read on the saved driving route between Harlingen and Fort Smith.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
U.S. Highway 77
Merge slight left onto U.S. Highway 77
88 mi · 01h 38m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Harlingen and Sunny near Fort Smith.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harlingen to Fort Smith?
The road trip is about 780.3 miles (1255.7 km) and usually takes 14h 30m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Bruceville-Eddy is a useful midpoint, sitting about 390.8 miles from Harlingen and 389.5 miles from Fort Smith.
How much longer is the road route than the straight-line distance?
The direct path is about 664.7 miles (1069.7 km), while the road route adds roughly 115.6 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 6:00 AM to 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $104.04 one way or $208.07 round trip. Estimated CO2 is about 244.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Harlingen and Sunny near Fort Smith.
Stop Ideas Near Bruceville-Eddy
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Bruceville-Eddy.
McGregor
Temple
Waco, TX
Killeen, Texas
Flight Path Map
This map shows the direct air route between Harlingen and Fort Smith. Straight-line distance: 664.67 mi (1069.68 km).
#1 Harlingen
The most populous city in Cameron County, Texas.
| Population | 65,176 |
| Coordinates | 26.1906300, -97.6961000 |
| Altitude | 12 |
| 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: Fort Smith (-94.39855, 35.38592)
Estimated Travel Time
Distance: 1256 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 25h 59m |
| 40 mph (64.37 km/h) | 19h 30m |
| 50 mph (80.47 km/h) | 15h 36m |
| 60 mph (96.56 km/h) | 13h 00m |
| 70 mph (112.65 km/h) | 11h 08m |
| 80 mph (129 km/h) | 09h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $104.04 | $208.07 |
| Mid-grade | $4.25 | $117.06 | $234.12 |
| Premium | $4.59 | $126.39 | $252.78 |
| Diesel | $3.99 | $109.93 | $219.85 |
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 Texas · Aug 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.