How far is Dallas, TX from Sullivan City, TX?
The driving distance from Dallas, TX to Sullivan City, TX is about 543.1 miles (874 km), with a travel time of about 09h 24m by car.
- The straight-line flight distance is about 461.7 miles (743 km).
- For a round trip, plan for roughly 18h 48m 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 09h 24m.
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 Guadalupe County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Dallas and Sullivan City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dallas and Sullivan City.
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1
Start on North Lamar Street
1233 ft · 34 sec · North Lamar Street
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2
Turn right onto Elm Street
1125 ft · 31 sec · Elm Street
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3
Continue on Elm Street
709 ft · 14 sec · Elm Street
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4
Take the ramp straight toward I 30, I 35E
100 m · 8 sec
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5
Keep slight left to continue on I 30 West, I 35E South
835 ft · 20 sec
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6
Keep slight right to continue on I 35E South
101 m · 8 sec
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7
Merge slight right onto South Stemmons Freeway
1.4 km · 1 min · South Stemmons Freeway
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8
Continue on South R L Thornton Freeway
2866 ft · 44 sec · South R L Thornton Freeway
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9
Continue on South R L Thornton Freeway
89.3 mi · 1 hr 32 min · South R L Thornton Freeway
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10
Continue on North Jack Kultgen Expressway
6.6 mi · 8 min · North Jack Kultgen Expressway
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11
Continue on Purple Heart Trail
37.9 mi · 39 min · Purple Heart Trail
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12
Keep slight left
26.5 mi · 27 min
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13
Take the exit slight right toward TX 130 Toll South: San Antonio
1.1 km · 56 sec
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14
Continue straight
86.1 mi · 1 hr 19 min
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15
Keep slight right to continue on I 10 West: San Antonio
3262 ft · 1 min
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16
Merge slight left
11.1 mi · 11 min
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17
Continue straight
9.4 mi · 9 min
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18
Keep slight left
12 mi · 13 min
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19
Keep slight right to continue on Connally Loop
1.4 mi · 2 min · Connally Loop
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20
Merge slight left onto Connally Loop
6.7 mi · 7 min · Connally Loop
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21
Take the exit slight right toward I 37, US 281 North: San Antonio, Corpus Christi
1184 ft · 29 sec
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22
Keep slight left to continue on I 37 South: Corpus Christi
2457 ft · 1 min
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23
Merge slight left
60.5 mi · 1 hr 1 min
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24
Take the exit slight right toward US 281 South
15.2 mi · 19 min
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25
Keep slight left to continue on South Nueces Street
66.2 mi · 1 hr 10 min · South Nueces Street
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26
Keep slight left
9.5 mi · 10 min
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27
Keep slight left to continue on Falfurrias Expressway
55.8 mi · 59 min · Falfurrias Expressway
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28
Keep slight left
17.6 mi · 19 min
-
29
Take the exit slight right toward US 281 South, TX 495: Pharr
1.3 km · 2 min
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30
Merge slight right
26.3 mi · 30 min
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31
Arrive at your destination
0 m · 1 sec · East Expressway 83
Car Route Details
A richer read on the saved driving route between Dallas and Sullivan City.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
South R L Thornton Freeway
Continue on South R L Thornton Freeway
89.3 mi · 01h 32m
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.
Mostly Sunny leaving Dallas and Mostly Sunny then Slight Chance Showers And Thunderstorms near Sullivan City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dallas to Sullivan City?
The road trip is about 543.1 miles (874 km) and usually takes 09h 24m 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?
Cibolo is a useful midpoint, sitting about 272.1 miles from Dallas and 271 miles from Sullivan City.
How much longer is the road route than the straight-line distance?
The direct path is about 461.7 miles (743 km), while the road route adds roughly 81.4 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 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 $72.44 one way or $144.89 round trip. Estimated CO2 is about 170.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Dallas and Mostly Sunny then Slight Chance Showers And Thunderstorms near Sullivan City.
Stop Ideas Near Cibolo
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Schertz EMS
Windcrest City Hall
Kirby Water Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Cibolo.
San Antonio Station
San Marcos Station
Austin
Flight Path Map
This map shows the direct air route between Dallas and Sullivan City. Straight-line distance: 461.7 mi (743.04 km).
#1 Dallas
The ninth most populous city in the United States and the center of the Dallas-Fort Worth metropolitan area.
| Population | 1,343,266 |
| Coordinates | 32.7830600, -96.8066700 |
| Altitude | 128 |
| Country | United States |
#2 Sullivan City
City in Hidalgo County, Texas, United States
| Population | 4,170 |
| Coordinates | 26.2775700, -98.5636300 |
| Altitude | 61 |
| Country | United States |
End: Sullivan City (-98.56363, 26.27757)
Estimated Travel Time
Distance: 874 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 18h 05m |
| 40 mph (64.37 km/h) | 13h 34m |
| 50 mph (80.47 km/h) | 10h 51m |
| 60 mph (96.56 km/h) | 09h 03m |
| 70 mph (112.65 km/h) | 07h 45m |
| 80 mph (129 km/h) | 06h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $72.44 | $144.89 |
| Mid-grade | $4.25 | $81.51 | $163.02 |
| Premium | $4.59 | $88.01 | $176.02 |
| Diesel | $3.99 | $76.55 | $153.09 |
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 · Jun 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.