How far is Montopolis, TX from Castroville, TX?
The driving distance from Montopolis, TX to Castroville, TX is about 104.6 miles (168.4 km), with a travel time of about 01h 59m by car.
- The straight-line flight distance is about 94 miles (151.3 km).
- For a round trip, plan for roughly 03h 59m 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 59m.
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.
The third most populous city in Comal County, Texas.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Mostly Cloudy
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Montopolis and Castroville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Montopolis and Castroville.
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1
Start on 183 Toll South: Lockhart
67 m · 5 sec
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2
Merge slight left onto Bergstrom Expressway
1.3 km · 47 sec · Bergstrom Expressway
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3
Continue on Bastrop Highway
1084 ft · 14 sec · Bastrop Highway
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4
Take the exit slight left toward 183 Toll: Ben White Boulevard
1 mi · 2 min
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5
Merge slight right
3.1 mi · 3 min
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6
Take the exit slight right toward I 35 South, I 35 North, US 290 East: San Antonio, Waco
2116 ft · 52 sec
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7
Keep slight left to continue on I 35 South: San Antonio
1.5 km · 2 min
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8
Merge slight left onto Purple Heart Trail
42.6 mi · 46 min · Purple Heart Trail
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9
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
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10
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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11
Continue on North Pan Am Expressway
6.9 mi · 8 min · North Pan Am Expressway
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12
Take the exit slight right toward I 410 West, Loop 368 South
2289 ft · 56 sec
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13
Keep slight left to continue on I 410 West
1680 ft · 33 sec
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14
Merge slight left onto Connally Loop
19.3 mi · 22 min · Connally Loop
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15
Take the exit slight right toward US 90 West: Del Rio
1.4 mi · 3 min
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16
Merge slight left onto Cleto Rodriguez Freeway
3.2 mi · 3 min · Cleto Rodriguez Freeway
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17
Continue on West US Highway 90
10.2 mi · 12 min · West US Highway 90
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18
Turn right onto Angelo Street
585 ft · 28 sec · Angelo Street
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19
Turn right onto Paris Street
26 m · 4 sec · Paris Street
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20
Arrive at your destination
0 m · 1 sec · Paris Street
Car Route Details
A richer read on the saved driving route between Montopolis and Castroville.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Purple Heart Trail
Merge slight left onto Purple Heart Trail
42.6 mi · 00h 46m
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.
Slight Chance Rain Showers then Mostly Cloudy leaving Montopolis and Chance Rain Showers near Castroville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Montopolis to Castroville?
The road trip is about 104.6 miles (168.4 km) and usually takes 01h 59m 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?
New Braunfels is a useful midpoint, sitting about 52.3 miles from Montopolis and 52.3 miles from Castroville.
How much longer is the road route than the straight-line distance?
The direct path is about 94 miles (151.3 km), while the road route adds roughly 10.6 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 2:30 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.94 one way or $27.89 round trip. Estimated CO2 is about 32.8 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Mostly Cloudy around Montopolis and Chance Rain Showers near Castroville.
Stop Ideas Near New Braunfels
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
New Braunfels Parks and Recreation
Schertz EMS
Converse City Hall
Comal County Courthouse(Gerichtsgebäude)
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to New Braunfels.
San Marcos Station
San Antonio Station
Austin
Taylor
Flight Path Map
This map shows the direct air route between Montopolis and Castroville. Straight-line distance: 93.99 mi (151.26 km).
#1 Montopolis
This Travis County community, situated at an elevation of 469 feet, is known for its Colorado River industrial areas.
| Population | 912,791 |
| Coordinates | 30.2432700, -97.6905600 |
| Altitude | 143 |
| Country | United States |
#2 Castroville
Town in the U.
| Population | 3,199 |
| Coordinates | 29.3557900, -98.8786400 |
| Altitude | 231 |
| Country | United States |
End: Castroville (-98.87864, 29.35579)
Estimated Travel Time
Distance: 168 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 29m |
| 40 mph (64.37 km/h) | 02h 36m |
| 50 mph (80.47 km/h) | 02h 05m |
| 60 mph (96.56 km/h) | 01h 44m |
| 70 mph (112.65 km/h) | 01h 29m |
| 80 mph (129 km/h) | 01h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $13.94 | $27.89 |
| Mid-grade | $4.25 | $15.69 | $31.38 |
| Premium | $4.59 | $16.94 | $33.88 |
| Diesel | $3.99 | $14.73 | $29.47 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.