Trip from Forest Hill, TX to San Antonio, TX

Pin this trip

Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Oct 23, 2026 · Editorial standards

Drive Time

4h 48m

Distance

264.6 mi

426 km

Drive Score

9/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$40

one way

EV Charging

Unknown

Best Time to Leave

Save up to 40 min

4 AM

4h 35m ★

6 AM

4h 48m

8 AM

5h 15m

10 AM

4h 58m

12 PM

4h 55m

3 PM

4h 59m

5 PM

5h 14m

8 PM

4h 40m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time

Google Maps Waze Apple Maps

Download GPX

Forest Hill, TX

Eddie O.

San Antonio, TX

Wikimedia Commons

Trip Overview

Forest Hill, TX to San Antonio, TX is 264.6 miles and takes about 4h 48m via Purple Heart Trail and I 35, with a fuel budget near $40 and enough daylight to finish in a day. This is a single-day trip that takes you from the Great Plains region of Texas to another part of the same region. Expect a mixed driving experience on this route, with a significant portion on highways. It's a straightforward drive that's manageable for most vehicles, making it a practical choice for a quick journey between these two Texas locations.

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

132.3 miles from Forest Hill, TX

A natural place for your longest stop of the day , about 2h 22m into the drive .

Main Roads

Road	Distance	Duration
Purple Heart Trail	99.6 mi	1h 46m
South Freeway	78 mi	1h 20m
I 35	55.8 mi	58m
North Pan Am Expressway	17 mi	20m
North Jack Kultgen Expressway	6.6 mi	7m
Ronald Reagan Memorial Highway	2 mi	2m
Interstate Highway 35	1.7 mi	1m
North Main Avenue	0.6 mi	1m

Longest stretch: Purple Heart Trail — 99.6 mi, about 1h 46m

Traffic on I-35

Hour-of-day weekday pattern from 100 FHWA count stations on your route.

Peak

4 PM

~3,362 veh/hr typical · worst 4,075

Quietest

2 AM

~579 veh/hr

Peak-to-quiet ratio

5.8×

busier at peak than in the quiet hours

12a 6a noon 6p 11p

Averaged across 104 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).

Turn-by-Turn Driving Directions

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

Start on Duncan Drive

297 ft · 14 sec · Duncan Drive

Turn right onto Forest Haven Drive

0.3 mi · 1 min · Forest Haven Drive

At end of road, turn right onto Grady Street

0.1 mi · 35 sec · Grady Street

Turn left onto Banbury Drive

0.2 mi · 41 sec · Banbury Drive

Turn right onto Duer Drive

492 ft · 27 sec · Duer Drive

Turn left onto Forest Hill Drive

0.3 mi · 40 sec · Forest Hill Drive

Turn right onto Southeast Loop 820

0.4 mi · 39 sec · Southeast Loop 820

Take the ramp

0.2 mi · 26 sec

Toward I 20 West Use the slight left lane.

Merge onto I 20

2.0 mi · 2 min · Ronald Reagan Memorial Highway

Use the straight / slight right lanes.

Take the exit

0.2 mi · 28 sec

Exit 437 Toward I 35W South, I 35W North: Waco, Denton Use the straight / slight right lanes.

Keep slight left at fork

0.9 mi · 1 min

Toward I 35W South: Waco Use the straight / slight right lanes.

Merge onto I 35W

78 mi · 1 hr 20 min · South Freeway

Use the straight / slight right lanes.

Continue on I 35; US 77

6.6 mi · 7 min · North Jack Kultgen Expressway

Use the straight / slight right lanes.

Continue on I 35

38 mi · 39 min · Purple Heart Trail

Use the straight / slight right lanes.

Keep slight left at fork onto I 35

56 mi · 58 min · I 35

Use the straight / slight right lanes.

Keep slight left at fork onto I 35; US 290

50 mi · 54 min · Purple Heart Trail

Toward 32nd Street, Dean Keeton Street Use the slight left lane.

Continue on I 35

1.7 mi · 1 min · Interstate Highway 35

Use the straight / slight right lanes.

Continue on I 35

12 mi · 12 min · Purple Heart Trail

Use the straight / slight right lanes.

Continue on I 35

10.0 mi · 11 min · North Pan Am Expressway

Use the straight / slight right lanes.

Keep slight left at fork onto I 35

6.4 mi · 8 min · North Pan Am Expressway

Toward I 35 South Use the straight / slight right lanes.

Keep slight left at fork onto I 35

0.6 mi · 41 sec · North Pan Am Expressway

Toward I 35 South: Lower Level, Laredo Use the slight left lane.

Take the exit

0.1 mi · 16 sec

Exit 157A Toward Lexington Avenue, Main Avenue, San Pedro Avenue Use the slight right lane.

Turn straight onto East Elmira Street

526 ft · 17 sec · East Elmira Street

Use the left / straight lanes.

Turn left onto North Main Avenue

0.2 mi · 18 sec · North Main Avenue

Use the left / straight lanes.

Enter roundabout onto Navarro Street

159 ft · 3 sec · Navarro Street

Continue on Navarro Street

111 ft · 2 sec · Navarro Street

Keep slight right at fork onto North Main Avenue

0.4 mi · 51 sec · North Main Avenue

Use the slight left / slight right lanes.

Turn right onto West Travis Street

222 ft · 10 sec · West Travis Street

Turn left onto North Flores Street

0.2 mi · 20 sec · North Flores Street

Continue on Military Plaza

392 ft · 15 sec · Military Plaza

Turn left onto Dolorosa Street

327 ft · 8 sec · Dolorosa Street

Arrive at destination

Dolorosa Street

Trip Plan

Given the 4h 48m estimated drive time and 264.6 miles, this trip is comfortably achievable in a single day. Aim to depart in the morning to allow ample time for the drive and any unexpected delays. With a fuel cost estimated at $40, it's wise to check your fuel level before leaving Forest Hill and plan for one fuel stop along the way, potentially during the longest 99.6-mile stretch on the Purple Heart Trail, to ensure you reach San Antonio without worry. The single recommended stop suggests you won't need to break up the drive significantly, but a brief pause for a stretch or snack is always a good idea.

Morning Departure

An early start around 7-8 AM gets you there with plenty of daylight left.

Evening Departure

A late afternoon start means arriving after dark. Morning is better.

You can normally do this drive in one day.

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

The halfway point lands around 132.3 miles from Forest Hill, TX, or about 2h 22m into the drive.

The longest continuous stretch on this route runs about 99.6 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 58 miles or 1h 4m in

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

Halfway reset

Around 132.3 miles or 2h 22m in

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

Final approach

Final hour starts around 3h 52m

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

Before You Leave

Open the route before leaving Forest Hill, 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 Forest Hill, TX

This is one driving day of about 264.6 miles and 4h 48m.

Your first comfortable stop window is around 58 miles from Forest Hill, 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 Purple Heart Trail for about 99.6 miles.

Where to Stop

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

city in Williamson County, Texas, United States

Mid-route town

Meal stop

Jarrell, TX

132 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

Italy, TX

Fuel and coffee

A short stop after about 58 miles helps settle the day before fatigue starts building.

Jarrell, TX

Meal break

The midpoint is around 132.3 miles from Forest Hill, TX, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Hours: 9 am–10 pm

+12102271373

Visit website

Place data sourced from public business listings. Hours and availability may vary.

Heads-up: tricky spots

5 of 23

5 decision points cluster between mile 3.6 and 263.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

3.6 mi into trip | ~7m in

Take the exit toward I 35W South, I 35W North: Waco, Denton

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 437 Toward I 35W South, I 35W North: Waco, Denton

3.8 mi into trip | ~7m in

Keep slight left at fork toward I 35W South: Waco

Highway fork - watch signs carefully. Lane positioning matters here

Use the straight / slight right lanes. Toward I 35W South: Waco

183.1 mi into trip | ~3h 15m in | I 35; US 290 / Purple Heart Trail

Keep slight left at fork onto I 35; US 290 / Purple Heart Trail toward 32nd Street, Dean Keeton Street

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left lane. Toward 32nd Street, Dean Keeton Street

262.9 mi into trip | ~4h 44m in | I 35 / North Pan Am Expressway

Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South: Lower Level, Laredo

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left lane. Toward I 35 South: Lower Level, Laredo

263.5 mi into trip | ~4h 45m in

Take the exit toward Lexington Avenue, Main Avenue, San Pedro Avenue

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

Use the slight right lane. Exit 157A Toward Lexington Avenue, Main Avenue, San Pedro...

Fuel & Cost

Regular Gas

$39.72 one way

$79.44 round trip

$3.81/gal 25.4 MPG avg 93 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.22	$43.95	$87.90
premium	$4.57	$47.56	$95.11
diesel	$6.28	$65.38	$130.76

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$40

Meals

$25–$50

Total

$65–$90

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

Estimated CO2 emission: 92.6 kg one way. Prices: EIA weekly data, 2026-10-19.

Driving Electric?

About $28 in charging · 0 stops · 67% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	79.4	0	$27.78	$12.70
Efficient EV	66.2	0	$23.15	$10.58
EV Truck/SUV	105.8	1	$37.04	$16.93

Gas CO2

93 kg

EV CO2

31 kg (67% less)

Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.

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 as of Oct 22, 2026

Origin

Forest Hill, TX

Afternoon in Forest Hill on Friday

Local time

4:05 PM

CDT

Current temp

84°F

Sunny

ESE 5 mph 0% chance Live forecast

Destination

San Antonio, TX

Afternoon in San Antonio on Friday

Local time

4:05 PM

CDT

Current temp

62°F

Sunny

E 5 mph 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

22 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

4h 48m on the road

An early start around 7-8 AM gets you there with plenty of daylight left.

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

National Parks Near This Route

Worth a detour if your schedule allows.

Waco Mammoth National Monument

National Monument

Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...

4 mi from route ~10 min detour Free near mile 82.1

View on nps.gov

San Antonio Missions National Historical Park

National Historical Park

Welcome to San Antonio Missions, a National Park Service site and the only UNESCO World Heritage Site in Texas. Each mission in the park is a center of community and has been since the early 1700s. Th...

9 mi from route ~22 min detour Free near mile 264.6

View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

What kind of drive is this?

This drive offers a mixed bag, with about 60% of the route being highway driving. You'll encounter stretches on the Purple Heart Trail, South Freeway, and I 35, which are designed for higher speeds and efficiency. The longest uninterrupted stretch you'll experience is 99.6 miles, primarily on the Purple Heart Trail, so be prepared for extended periods of consistent driving. While much of the route follows major roadways, the 'mixed drive' profile suggests you might transition between faster highway sections and potentially more local or arterial roads, so keep an eye on navigation.

60% highway — fuel and pacing are the main things to plan.

32 navigation steps total — most of the decisions cluster near the start and finish.

Longest single stretch: 99.6 mi on Purple Heart Trail.

How Hard Is This Drive?

8/10

This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 3.6 miles in.

Driving Effort 8/10

Demanding - plan breaks and stay ahead of the key maneuvers

Balances navigation complexity with total wheel time.

This is a demanding drive. With 23 significant decision points across 264.6 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 3.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 3.8 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 183.1 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.

Elevation Profile

Mostly flat terrain

822 ft 552 ft

Total Climb

573 ft

Total Descent

741 ft

Highest Point

822 ft

~170.1 mi in

Elevation Range

269 ft

About the Cities

Arriving in San Antonio, TX

Full guide →

Founded 1718

San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.

Top landmarks

• Alamo Mission — historic place in San Antonio, Bexar County, Texas
• San Antonio Missions National Historical Park — historic district in San Antonio, Bexar County, Texas
• Fort Sam Houston — military base in San Antonio, Texas, United States

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 4h 48m. Total distance: 264.6 miles.

Family Friendly

Moderate complexity with 1 natural rest stops along the way.

Solo Traveler

4h 48m drive, comfortable solo distance.

Frequently Asked Questions

The longest stretch is about 99.6 miles on Purple Heart Trail. The full list of main roads is in the Roads section above.

Yes — we found about 27 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.

It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at San Antonio, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.

Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 27 rest areas along the route for bathroom stops.

Yes — Waco Mammoth National Monument and San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.

Possible but tiring. At 4.8 hours each way, an in-and-out day trip would put you behind the wheel for 9.6 hours — manageable with a long break at San Antonio, TX, but most travelers stay overnight.

How this page is built

Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.

Was this helpful?

Thanks for your feedback!

Your tip has been submitted. Thanks!

/500

Explore More

Explore more options from Forest Hill, TX or browse trips ending in San Antonio, TX.

Looking for more statewide routes? Browse TX road trips.

Trip from Forest Hill, TX to San Antonio, TX

Best Time to Leave

Trip Overview

Main Roads

Traffic on I-35

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Stops Along Your Drive

Bell County Northbound Rest Area

Service Plaza

Hill County Northbound Rest Area

Buc-ee's

Flying J Travel Center

Walburg Travel Center & Food Court

Buc-ee's

QuikTrip

QuikTrip

Love's Travel Stop

TA

Flying J Travel Plaza

Pilot Travel Center

Hill County Southbound Rest Area

QuikTrip

Road Ranger

Marlstone Retail Center

Love's Travel Stop

Love's Travel Stop

Buc-ee's

Pilot Travel Center

TA

Service Plaza

Bell County Southbound Rest Area

QuikTrip

Pilot Travel Center

Petro Stopping Centers

Spanish Governor's Palace

GO RIO San Antonio River Cruises

San Antonio | The Saga

Hemisfair

San Antonio Fire Museum

The Amazing Mirror Maze

SEA LIFE San Antonio

San Antonio River Lock & Dam

Heads-up: tricky spots

Fuel & Cost

Travel Intel

Forest Hill, TX

San Antonio, TX

Same local time

22 degrees cooler at arrival

4h 48m on the road

National Parks Near This Route

Waco Mammoth National Monument

San Antonio Missions National Historical Park

What kind of drive is this?

How Hard Is This Drive?

Elevation Profile

About the Cities

Arriving in San Antonio, TX

Who Is This Route For?

Frequently Asked Questions

Which road carries most of the drive?

Are there rest areas on this route?

Should I avoid arriving after dark?

Is this a good trip with kids?

Where does this route get tricky?

Are there national parks near this route?

Can I do this as a round trip in one go?

How this page is built

Explore More

Continue From San Antonio, TX

More from Forest Hill, TX

More trips to San Antonio, TX