Trip from San Antonio, TX to Post, TX

Drive Time

6h 1m

Distance

344 mi

554 km

Drive Score

9/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$53

one way

Best Time Drive vs Fly

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San Antonio, TX

Wikimedia Commons

Post, TX

Thomas balabaud

Trip Overview

Embarking on the 344-mile journey from San Antonio to Post takes you across the Texas landscape in approximately 6 hours and 1 minute. Because this route relies on local roads rather than major highways, it is best suited for a single, focused day of driving. Budgeting about $51 for fuel is a smart starting point for your trip planning. Both your starting point in San Antonio and your destination in Post are situated within the Great Plains region, offering a consistent geographic backdrop throughout your travel. While the drive is manageable in one go, the turn-heavy nature of the route means you should be prepared for a more active day behind the wheel than a standard interstate cruise.

Trip Pace

Same-day drive is realistic

A same-day return is possible, but it will make for a full day on the road.

Break Rhythm

1 planned break

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

172 miles from San Antonio, TX

A natural place for your longest stop of the day , about 2h 58m into the drive .

Drive Character

Expect a unique driving experience that favors local roads over high-speed highway travel, as this route features zero percent highway share. You will navigate via West Market Street, Navarro Street, and San Pedro Avenue, creating a turn-heavy profile that demands your full attention. Because the longest stretch on any single road—specifically West Market Street—is effectively zero miles, you will be making frequent transitions between local thoroughfares. This is not a monotonous cruise; instead, it is a technical drive that keeps you engaged with the road layout. Plan for a steady pace that reflects the local, winding nature of this 344-mile trek.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.

There are about 29 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

I 10 is the longest continuous segment at about 98.7 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 10 and US 84. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 16.1 miles in near I 10; US 87.

Route Complexity 8/10

Demanding - plan breaks and stay ahead of the key maneuvers

This is a demanding drive. With 19 significant decision points across 344 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 16.1 miles (I 10; US 87): Highway fork - watch signs carefully. Lane positioning matters here; at 114.7 miles (US 83): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 202.8 miles (US 67; US 83 / Hutchings Avenue): Lane positioning matters here.

Critical Maneuvers

5 of 19 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

16.1 mi into trip | ~20m in | I 10; US 87

Keep slight right at fork onto I 10; US 87

Highway fork - watch signs carefully. Lane positioning matters here

Use the straight / slight left lanes.

114.7 mi into trip | ~1h 58m in | US 83

Take the exit onto US 83 toward US 83 North, US 377: Junction, Menard

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Exit 456 Toward US 83 North, US 377: Junction, Menard

202.8 mi into trip | ~3h 32m in | US 67; US 83 / Hutchings Avenue

Turn right onto US 67; US 83 / Hutchings Avenue

Lane positioning matters here

Use the right lane.

202.8 mi into trip | ~3h 32m in | TX 158 / North Broadway Street

Turn left onto TX 158 / North Broadway Street

Lane positioning matters here

Use the left lane.

268.3 mi into trip | ~4h 44m in | US 84

Take the exit onto US 84 toward US 84 West: Snyder, Lubbock

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Exit 238A Toward US 84 West: Snyder, Lubbock

Towns Along This Route

Between San Antonio, TX and Post, TX, road signs point toward Menard and Lubbock.

Menard

114.7 mi in | ~1h 58m | via US 83

Lubbock

268.3 mi in | ~4h 44m | via US 84

Main Roads

Road	Distance	Duration
I 10	98.7 mi	1h 37m
US 84	75.7 mi	1h 16m
Frisco Avenue	41.9 mi	44m
State Highway 153	29.5 mi	33m
North Main Street	29.3 mi	30m
Roberts Avenue	16.5 mi	18m
McDermott Freeway	12.8 mi	14m
FM 2111	12.3 mi	13m

Longest stretch: I 10 — 98.7 mi, about 1h 37m

Turn-by-Turn Driving Directions

Step-by-step road directions between San Antonio, TX and Post, TX.

Start on Dolorosa Street

143 ft · 4 sec · Dolorosa Street

Continue on West Market Street

0.2 mi · 28 sec · West Market Street

Turn left onto Navarro Street

0.8 mi · 1 min · Navarro Street

Enter roundabout onto San Pedro Avenue

85 ft · 1 sec · San Pedro Avenue

Continue on San Pedro Avenue

0.5 mi · 1 min · San Pedro Avenue

Turn left onto West Cypress Street

0.1 mi · 10 sec · West Cypress Street

Use the left lane.

Turn straight onto East Fredericksburg Road

1.2 mi · 2 min · East Fredericksburg Road

Turn right onto Interstate 10 West

0.1 mi · 13 sec · Interstate 10 West

Take the ramp

0.1 mi · 13 sec

Toward I 10 West, US 87 North

Merge onto I 10; US 87

13 mi · 14 min · McDermott Freeway

Use the straight / slight right lanes.

Keep slight right at fork onto I 10; US 87

99 mi · 1 hr 37 min · I 10; US 87

Use the straight / slight left lanes.

Take the exit onto US 83

0.3 mi · 44 sec · US 83

Exit 456 Toward US 83 North, US 377: Junction, Menard

Turn right onto US 83; US 377

29 mi · 30 min · North Main Street

Use the right lane.

Continue on US 83

42 mi · 44 min · Frisco Avenue

Continue on US 83

17 mi · 18 min · Roberts Avenue

Turn right onto US 67; US 83

387 ft · 18 sec · Hutchings Avenue

Use the right lane.

Turn left onto TX 158

6.3 mi · 7 min · North Broadway Street

Use the left lane.

Turn right onto FM 2111

12 mi · 13 min · FM 2111

Turn left onto TX 153

29 mi · 33 min · State Highway 153

Keep slight right at fork onto TX 153

19 ft · 0 sec · State Highway 153

Turn right onto TX 70

10 mi · 10 min · State Highway 70

Continue on TX 70

0.8 mi · 1 min · Lamar Street

Turn left onto Northwest Georgia Avenue

0.1 mi · 16 sec · Northwest Georgia Avenue

Take the ramp

340 ft · 8 sec

Toward I 20 West: Midland

Merge onto I 20; US 84

6.0 mi · 5 min · I 20; US 84

Take the exit onto US 84

0.3 mi · 19 sec · US 84

Exit 238A Toward US 84 West: Snyder, Lubbock

Keep slight left at fork onto US 84

75 mi · 1 hr 16 min · US 84

Turn left onto West Main Street

298 ft · 15 sec · West Main Street

Arrive at destination

West Main Street

Trip Plan

Since this is a turn-heavy local drive, you should prioritize departing early in the morning to ensure you have plenty of daylight for navigating the various street transitions. With a total duration of just over 6 hours, you can comfortably complete the trip in one day with at least one planned stop to stretch your legs and refuel. Keep your $51 fuel budget in mind, as local roads can sometimes lead to more variable fuel consumption than steady highway driving. Pay close attention to your navigation as you move through city streets, as the lack of long highway stretches means you will be turning more often than you might expect. Flexibility is your biggest advantage here, so don't hesitate to pull over for a quick break whenever you feel the need to reset.

Morning Departure

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Evening Departure

This is a long drive — plan for a morning departure or consider splitting it into two days.

You can normally do this drive in one day.

Plan roughly 1 meaningful break for fuel, food, and rest.

The halfway point lands around 172 miles from San Antonio, TX, or about 2h 58m into the drive.

The longest continuous stretch on this route runs about 98.7 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 80 miles or 1h 23m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 172 miles or 2h 58m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 5h

Traffic, exits, and arrival timing usually matter more near Post, TX than in the middle of the route.

Before You Leave

Open the route before leaving San Antonio, TX so your first major turns are already loaded.

Leave with enough water and a charging cable within reach, not packed away.

Check your fuel range against the first long segment, especially if you are starting outside city service areas.

Day 1

Settle into the route from San Antonio, TX

This is one driving day of about 344 miles and 6h 1m.

Your first comfortable stop window is around 80 miles from San Antonio, TX.

This route can stay practical as a one-day drive if traffic stays reasonable.

Plan about 1 real break rather than only quick fuel stops.

The longest stretch is on I 10 for about 98.7 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 172 mi from San Antonio, TX · 2h 58m into the drive

Mid-route town

Meal stop

Kerrville, TX

172 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Kerrville, TX

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

Live Oak, TX

Meal break

The midpoint is around 172 miles from San Antonio, TX, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before I 10 if your tank is already low. That segment runs about 98.7 miles.

Arriving in Post, TX

The final approach into Post, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Post, TX.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$52.55 one way

$105.10 round trip

$3.88/gal 25.4 MPG avg 120 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.25	$57.59	$115.17
premium	$4.59	$62.18	$124.35
diesel	$5.64	$76.42	$152.85

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$53

Meals

$25–$50

Total

$78–$103

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 120.4 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $36 in charging · 1 stop · 67% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	103.2	1	$36.12	$16.51
Efficient EV	86	0	$30.10	$13.76
EV Truck/SUV	137.6	1	$48.16	$22.02

Gas CO2

120 kg

EV CO2

40 kg (67% less)

Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.

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.

Forecast data refreshed 3 days ago

Origin

San Antonio, TX

Afternoon in San Antonio on Sunday

Local time

2:16 PM

CDT

Current temp

81°F

Unavailable

Live forecast

Destination

Post, TX

Afternoon in Post on Sunday

Local time

2:16 PM

CDT

Current temp

56°F

Unavailable

Live forecast

Seasonal Notes

Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.

Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.

Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.

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

25 degrees cooler at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

6h 1m on the road

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from San Antonio, TX to Post, TX covers 344 miles and takes about 6h 1m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are I 10, US 84, Frisco Avenue. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 172 miles from San Antonio, TX. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $52.55 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.