How far is Montopolis, TX from Sam Rayburn, TX?
The driving distance from Montopolis, TX to Sam Rayburn, TX is about 269.3 miles (433.4 km), with a travel time of about 05h 13m by car.
- The straight-line flight distance is about 224.5 miles (361.3 km).
- For a round trip, plan for roughly 10h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CST.
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 05h 13m.
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 Grimes County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Montopolis and Sam Rayburn.
Turn-by-Turn Driving Directions
Step-by-step road directions between Montopolis and Sam Rayburn.
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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
2119 ft · 26 sec · Bastrop Highway
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4
Take the exit slight left toward TX 71 East: Austin-Bergstrom International Airport
2541 ft · 1 min
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5
Continue on East State Highway 71
2.2 mi · 3 min · East State Highway 71
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6
Turn straight onto Bastrop Freeway
1.9 mi · 2 min · Bastrop Freeway
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7
Continue on East State Highway 71
2388 ft · 29 sec · East State Highway 71
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8
Continue on Texas State Highway 71
18.9 mi · 22 min · Texas State Highway 71
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9
Take the exit slight right
1067 ft · 26 sec
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10
Turn straight onto College Street
1.4 km · 2 min · College Street
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11
Turn left onto State Highway 95
1945 ft · 35 sec · State Highway 95
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12
Turn right onto Chestnut Street
1.3 km · 1 min · Chestnut Street
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13
Continue on State Highway 21 East
65.2 mi · 1 hr 12 min · State Highway 21 East
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14
Keep slight left
5.5 mi · 7 min
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15
Turn right onto West William J Bryan Parkway
1.6 km · 2 min · West William J Bryan Parkway
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16
Continue on East William J Bryan Parkway
2.2 mi · 4 min · East William J Bryan Parkway
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17
Continue on Boonville Road
3.2 mi · 5 min · Boonville Road
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18
Continue on Farm-to-Market Road 158
1.2 km · 1 min · Farm-to-Market Road 158
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19
Continue straight
49.1 mi · 58 min
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20
Continue straight
101.2 mi · 1 hr 55 min
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21
Turn left onto South Main Street
2.3 mi · 5 min · South Main Street
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22
Merge slight right onto North Wheeler Street
8.1 mi · 8 min · North Wheeler Street
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23
Turn left onto Sam Rayburn Parkway
3.3 mi · 5 min · Sam Rayburn Parkway
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24
Turn right
65 m · 6 sec
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25
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Montopolis and Sam Rayburn.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Farm-to-Market Road 158
Continue straight
101 mi · 01h 55m
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 Cloudy leaving Montopolis and Mostly Sunny near Sam Rayburn.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Montopolis to Sam Rayburn?
The road trip is about 269.3 miles (433.4 km) and usually takes 05h 13m 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?
Bedias is a useful midpoint, sitting about 134.5 miles from Montopolis and 134.8 miles from Sam Rayburn.
How much longer is the road route than the straight-line distance?
The direct path is about 224.5 miles (361.3 km), while the road route adds roughly 44.8 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 CST. If you want a more comfortable same-day return, try to leave by 6:32 AM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.02 one way or $68.04 round trip. Estimated CO2 is about 84.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Montopolis and Mostly Sunny near Sam Rayburn.
Stop Ideas Near Bedias
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 Bedias.
Bryan, TX
Prairie View, TX
Flight Path Map
This map shows the direct air route between Montopolis and Sam Rayburn. Straight-line distance: 224.5 mi (361.3 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 Sam Rayburn
Sam Rayburn is a place in Texas, United States.
| Population | 0 |
| Coordinates | 31.0640800, -94.0357500 |
| Altitude | 61 |
| Country | United States |
End: Sam Rayburn (-94.03575, 31.06408)
Estimated Travel Time
Distance: 433 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 58m |
| 40 mph (64.37 km/h) | 06h 44m |
| 50 mph (80.47 km/h) | 05h 23m |
| 60 mph (96.56 km/h) | 04h 29m |
| 70 mph (112.65 km/h) | 03h 50m |
| 80 mph (129 km/h) | 03h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.58 | $34.02 | $68.04 |
| Mid-grade | $4.09 | $38.89 | $77.79 |
| Premium | $4.47 | $42.48 | $84.97 |
| Diesel | $5.68 | $53.98 | $107.96 |
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 · Nov 06, 2026