How far is San Antonio, TX from Conroe, TX?
The driving distance from San Antonio, TX to Conroe, TX is about 223.9 miles (360.4 km), with a travel time of about 04h 00m by car.
- The straight-line flight distance is about 192.1 miles (309.1 km).
- For a round trip, plan for roughly 08h 00m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 04h 00m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and Conroe.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Conroe.
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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
1.2 km · 1 min · East Commerce Street
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6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
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7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
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8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
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9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
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10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
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11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
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12
Continue on I 10 East: Houston, Austin, Waco
139.6 mi · 2 hr 21 min
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13
Take the exit slight right toward TX 99 Toll North, TX 99 South: Grand Parkway
2346 ft · 45 sec
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14
Keep slight left to continue on TX 99 Toll North: Grand Parkway
1 km · 1 min
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15
Keep slight left to continue on TX 99 Toll North
854 ft · 21 sec
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16
Merge slight left onto West Grand Parkway North
37.8 mi · 41 min · West Grand Parkway North
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17
Take the exit slight right toward I 45 North: Dallas
1.4 mi · 3 min
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18
Merge slight left
11.5 mi · 13 min
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19
Take the exit slight right toward TX 75 North, Loop 336: Frazier Street
1292 ft · 32 sec
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20
Turn straight onto Interstate 45 North Frontage Road
3018 ft · 1 min · Interstate 45 North Frontage Road
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21
Turn right onto South Loop 336 West
68 m · 8 sec · South Loop 336 West
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22
Turn left onto South Frazier Street
1 mi · 2 min · South Frazier Street
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23
Continue on South Frazier Street
1.2 mi · 2 min · South Frazier Street
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24
Turn right onto West Davis Street
1808 ft · 39 sec · West Davis Street
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25
Turn right onto North Pacific Street
31 m · 5 sec · North Pacific Street
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26
Arrive at your destination
0 m · 1 sec · North Pacific Street
Car Route Details
A richer read on the saved driving route between San Antonio and Conroe.
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 10 East
Continue on I 10 East: Houston, Austin, Waco
140 mi · 02h 21m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving San Antonio and Mostly Sunny near Conroe.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Conroe?
The road trip is about 223.9 miles (360.4 km) and usually takes 04h 00m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Weimar is a useful midpoint, sitting about 111.8 miles from San Antonio and 112.1 miles from Conroe.
How much longer is the road route than the straight-line distance?
The direct path is about 192.1 miles (309.1 km), while the road route adds roughly 31.8 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 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:00 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.85 one way or $59.71 round trip. Estimated CO2 is about 70.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around San Antonio and Mostly Sunny near Conroe.
Stop Ideas Near Weimar
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 Weimar.
Prairie View, TX
Austin
San Marcos Station
Taylor
Flight Path Map
This map shows the direct air route between San Antonio and Conroe. Straight-line distance: 192.05 mi (309.07 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 Conroe
The third most populous city in Montgomery County, Texas.
| Population | 96,214 |
| Coordinates | 30.3118800, -95.4560500 |
| Altitude | 67 |
| Country | United States |
End: Conroe (-95.45605, 30.31188)
Estimated Travel Time
Distance: 360 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 27m |
| 40 mph (64.37 km/h) | 05h 35m |
| 50 mph (80.47 km/h) | 04h 28m |
| 60 mph (96.56 km/h) | 03h 43m |
| 70 mph (112.65 km/h) | 03h 11m |
| 80 mph (129 km/h) | 02h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $29.85 | $59.71 |
| Mid-grade | $4.25 | $33.59 | $67.18 |
| Premium | $4.59 | $36.27 | $72.54 |
| Diesel | $3.99 | $31.54 | $63.09 |
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 · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.