How far is San Antonio, TX from New Boston, TX?
The driving distance from San Antonio, TX to New Boston, TX is about 428.2 miles (689.1 km), with a travel time of about 07h 34m by car.
- The straight-line flight distance is about 368.1 miles (592.4 km).
- For a round trip, plan for roughly 15h 08m 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 07h 34m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in the U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and New Boston.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and New Boston.
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1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
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2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
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3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
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4
Turn left
111 m · 13 sec
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5
Turn straight onto East Commerce Street
66 m · 13 sec · East Commerce Street
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6
Take the ramp sharp left toward US 281 North, I 37 North
1159 ft · 28 sec
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7
Merge slight left onto William J Bordelon Freeway
1.3 km · 56 sec · William J Bordelon Freeway
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8
Take the exit slight right toward I 35 North: Austin
2907 ft · 1 min
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9
Merge slight left onto North Pan Am Expressway
8.2 mi · 10 min · North Pan Am Expressway
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10
Keep slight left to continue on North Pan Am Expressway
7.4 mi · 8 min · North Pan Am Expressway
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11
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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12
Continue on Interstate Highway 35
1.9 mi · 2 min · Interstate Highway 35
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13
Continue on Purple Heart Trail
47.8 mi · 52 min · Purple Heart Trail
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14
Keep slight right to continue on Purple Heart Trail
95.6 mi · 1 hr 40 min · Purple Heart Trail
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15
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
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16
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
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17
Keep slight right to continue on I 35E: Dallas
56.2 mi · 58 min
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18
Take the exit slight right toward I 30 East: Texarkana, Riverfront Boulevard, Griffin Street
2094 ft · 42 sec
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19
Keep slight left to continue on I 35E North, I 30 West: Denton, Fort Worth, Texarkana
129 m · 6 sec
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20
Keep slight right to continue on I 30 East: Texarkana, Convention Center
2206 ft · 33 sec
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21
Keep slight left to continue on I 30 East: Texarkana
117 m · 6 sec
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22
Continue on East R L Thornton Freeway
7.5 mi · 9 min · East R L Thornton Freeway
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23
Keep slight left to continue on East R L Thornton Freeway
145.9 mi · 2 hr 29 min · East R L Thornton Freeway
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24
Take the exit slight right toward US 82: New Boston, De Kalb , Clarksville
1259 ft · 31 sec
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25
Turn slight right onto US Highway 82 West
2.3 mi · 4 min · US Highway 82 West
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26
Continue on West Street
651 ft · 26 sec · West Street
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27
At the end of the road, turn left onto Northeast Front Street
149 m · 14 sec · Northeast Front Street
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28
Arrive at your destination
0 m · 1 sec · Northeast Front Street
Car Route Details
A richer read on the saved driving route between San Antonio and New Boston.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
East R L Thornton Freeway
Keep slight left to continue on East R L Thornton Freeway
146 mi · 02h 29m
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.
Partly Sunny leaving San Antonio and Mostly Sunny near New Boston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to New Boston?
The road trip is about 428.2 miles (689.1 km) and usually takes 07h 34m 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?
Hillsboro is a useful midpoint, sitting about 214.2 miles from San Antonio and 213.9 miles from New Boston.
How much longer is the road route than the straight-line distance?
The direct path is about 368.1 miles (592.4 km), while the road route adds roughly 60.1 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 $57.10 one way or $114.20 round trip. Estimated CO2 is about 134.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Antonio and Mostly Sunny near New Boston.
Stop Ideas Near Hillsboro
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Historic City Hall
Whitney City Hall
Town Hall Estates Nursing
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Hillsboro.
Cleburne
Waco, TX
McGregor
Fort Worth Central Station
Flight Path Map
This map shows the direct air route between San Antonio and New Boston. Straight-line distance: 368.09 mi (592.38 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 New Boston
City in Texas, United States
| Population | 4,568 |
| Coordinates | 33.4598400, -94.4154800 |
| Altitude | 109 |
| Country | United States |
End: New Boston (-94.41548, 33.45984)
Estimated Travel Time
Distance: 689 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 16m |
| 40 mph (64.37 km/h) | 10h 42m |
| 50 mph (80.47 km/h) | 08h 33m |
| 60 mph (96.56 km/h) | 07h 08m |
| 70 mph (112.65 km/h) | 06h 07m |
| 80 mph (129 km/h) | 05h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $57.10 | $114.20 |
| Mid-grade | $4.25 | $64.25 | $128.50 |
| Premium | $4.59 | $69.37 | $138.74 |
| Diesel | $3.99 | $60.33 | $120.67 |
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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.