Origin
Montopolis, TX
Late night in Montopolis on Saturday
Local time
12:02 AM
CDT
Current temp
62°F
Unavailable
Live forecast
Trip from Montopolis, TX to San Marcos, TX
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
39m
Distance
32.5 mi
52 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 36m
★
6 AM
0h 39m
8 AM
0h 46m
10 AM
0h 42m
12 PM
0h 41m
3 PM
0h 42m
5 PM
0h 46m
8 PM
0h 37m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
San Marcos, TX
Wikimedia Commons
Trip Overview
The drive from Montopolis, TX to San Marcos, TX covers 32.5 miles and takes about 39m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Purple Heart Trail, TX 71, East Hopkins Street for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 23.8 miles on Purple Heart Trail. At current regular gas prices, budget about $4.91 one way before food or hotel costs.
About the Cities
Arriving in San Marcos, TX
Full guide →San Marcos is a college town in the Central Hill Country region of Texas in the United States of America, about half an hour's drive south of the state's capital, Austin. The site of human habitation for over 10,000 years, it was settled in 1808 by Mexican families, and is now the home to Texas State University-San Marcos. In 2020, it had a population of 58,000 people.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 39m. Total distance: 32.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
39m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 39m drive with frequent turns across 32.5 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Purple Heart Trail is the longest continuous segment at about 23.8 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1 miles in.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 12 decision points packed into just 32.5 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 39m.
Where does it get tricky?
The main spots that need attention: at 1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 5.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 12 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
6
1 mi into trip
|
~1m in
Take the exit toward 183 Toll: Ben White Boulevard
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left / straight lanes.
Toward 183 Toll: Ben White Boulevard
7
5.1 mi into trip
|
~6m in
Take the exit toward I 35 South, I 35 North, US 290 East: San Antonio, Waco
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 35 South, I 35 North, US 290 East: San...
7
5.5 mi into trip
|
~7m in
Keep slight left at fork toward I 35 South: San Antonio
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 35 South: San Antonio
8
30.3 mi into trip
|
~34m in
Take the exit toward TX 80 East, TX 142 East, TX 21 East: Bastrop, Luling
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 205
Toward TX 80 East, TX 142 East, TX 21 East: Bas...
6
32.4 mi into trip
|
~39m in
|
Loop 82 / North Guadalupe Street
At end of road, turn left onto Loop 82 / North Guadalupe Street
Complex interchange - multiple decisions in a short stretch
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Montopolis, TX and San Marcos, TX, road signs point toward Waco and Luling.
Waco
5.1 mi in
|
~6m
Luling
30.3 mi in
|
~34m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Purple Heart Trail | 23.8 mi | 25m |
| TX 71 | 3.1 mi | 3m |
| East Hopkins Street | 1.1 mi | 1m |
| Bergstrom Expressway | 0.8 mi | <1m |
| North Interstate 35 | 0.6 mi | 1m |
| Bastrop Highway | 0.2 mi | <1m |
| North LBJ Drive | <0.1 mi | <1m |
| North Guadalupe Street | <0.1 mi | <1m |
Longest stretch:
Purple Heart Trail
— 23.8 mi, about 25m
Turn-by-Turn Driving Directions
Step-by-step road directions between Montopolis, TX and San Marcos, TX.
1
Start on this road
219 ft
·
5 sec
·
this road
Toward 183 Toll South: Lockhart
2
Merge onto 183 Toll
0.8 mi
·
47 sec
·
Bergstrom Expressway
3
Continue on US 183
0.2 mi
·
13 sec
·
Bastrop Highway
4
Take the exit
1.0 mi
·
2 min
Toward 183 Toll: Ben White Boulevard
Use the slight left / straight lanes.
5
Merge onto TX 71
3.1 mi
·
3 min
·
TX 71
6
Take the exit
0.4 mi
·
51 sec
Toward I 35 South, I 35 North, US 290 East: San Antonio, Waco
Use the straight / slight right lanes.
7
Keep slight left at fork
1.0 mi
·
1 min
Toward I 35 South: San Antonio
Use the slight left lane.
8
Merge onto I 35
24 mi
·
25 min
·
Purple Heart Trail
Use the straight / slight right lanes.
9
Take the exit
0.2 mi
·
26 sec
Exit 205
Toward TX 80 East, TX 142 East, TX 21 East: Bastrop, Luling
Use the straight / slight right lanes.
10
Turn straight onto North Interstate 35
0.6 mi
·
1 min
·
North Interstate 35
11
Turn slight right
472 ft
·
17 sec
12
Turn slight right onto TX 80
1.1 mi
·
1 min
·
East Hopkins Street
Use the right lane.
13
Turn right onto Loop 82
211 ft
·
9 sec
·
North LBJ Drive
14
Turn left
421 ft
·
36 sec
15
At end of road, turn left onto Loop 82
141 ft
·
2 sec
·
North Guadalupe Street
16
Arrive at destination
Loop 82
Fuel & Cost
Regular Gas
$4.91 one way
$9.82 round trip
$3.84/gal
25.4 MPG avg
11 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $5.38 | $10.75 |
| premium | $4.54 | $5.80 | $11.61 |
| diesel | $5.61 | $7.18 | $14.35 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 11.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 9.8 | 0 | $3.41 | $1.56 |
| Efficient EV | 8.1 | 0 | $2.84 | $1.30 |
| EV Truck/SUV | 13 | 0 | $4.55 | $2.08 |
Gas CO2
11 kg
EV CO2
4 kg (64% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
San Marcos, TX
Late night in San Marcos on Saturday
Local time
12:02 AM
CDT
Current temp
62°F
Unavailable
Live forecast
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
39m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Montopolis, TX to San Marcos, TX covers 32.5 miles and takes about 39m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, TX 71, East Hopkins Street. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 16.2 miles from Montopolis, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $4.91 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a short but busy drive. With 12 decision points packed into just 32.5 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 39m.
The main spots that need attention: at 1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 5.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Between Montopolis, TX and San Marcos, TX, road signs point toward Waco and Luling.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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