Castle Hills to El Paso is 547.1 miles and takes about 8h 49m via I 10, with a fuel budget near $79 and enough daylight to finish in a day if you start early. This route covers a significant portion of Texas, moving from the Great Plains region to another section of the Great Plains. It's a long-haul drive, so plan for a full day behind the wheel. Given the distance, most drivers opt to break this trip into two days. Consider this route if you're looking for a straightforward, direct path across the state.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
273.5 miles from Castle Hills, TX
A natural place for your longest stop of the day
, about 4h 25m into the drive
.
Main Roads
Road
Distance
Duration
I 10
535.3 mi
8h 33m
McDermott Freeway
8.1 mi
9m
Connally Loop
1.4 mi
1m
Northwest Loop 410
0.5 mi
1m
East Missouri Avenue
0.3 mi
<1m
North Mesa Street
0.3 mi
<1m
Northwest Military Highway
<0.1 mi
<1m
South Gardenview Drive
<0.1 mi
<1m
Longest stretch:
I 10
— 535.3 mi, about 8h 33m
Traffic on I-10
Hour-of-day weekday pattern from 68 FHWA count stations on your route.
Peak
4 PM
~1,307 veh/hr typical
· worst 1,681
Quietest
2 AM
~154 veh/hr
Peak-to-quiet ratio
8.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 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 Castle Hills, TX and El Paso, TX.
1
Start on South Gardenview Drive
186 ft·8 sec·South Gardenview Drive
2
Turn right onto FM 1535
234 ft·7 sec·Northwest Military Highway
3
Turn straight onto Northwest Loop 410
0.5 mi·1 min·Northwest Loop 410
4
Take the ramp
0.1 mi·18 sec
Toward I 410 WestUse the slight left lane.
5
Merge onto I 410
1.4 mi·1 min·Connally Loop
6
Take the exit
0.2 mi·22 sec
Exit 16Toward I 10 East, US 87 South, I 10 West, US 87 North: San Antonio, El PasoUse the slight right lane.
7
Keep slight right at fork
0.6 mi·1 min
Toward I 10 West, US 87 North: El PasoUse the slight left / slight right lanes.
8
Merge onto I 10; US 87
8.1 mi·9 min·McDermott Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto I 10; US 87
535 mi·8 hr 33 min·I 10; US 87
Use the straight / slight left lanes.
10
Take the exit
0.2 mi·20 sec
Exit 19BToward Missouri Avenue, DowntownUse the straight / slight right lanes.
11
Turn straight onto East Missouri Avenue
0.3 mi·49 sec·East Missouri Avenue
12
Turn left onto TX 20
0.3 mi·27 sec·North Mesa Street
13
Arrive at destination
North Mesa Street
Trip Plan
For this 8-hour, 49-minute drive, splitting it into two days is highly recommended for comfort and safety. Aim to leave Castle Hills early in the morning on day one to cover about half the distance, leaving the remaining 535.3 miles for day two. This allows for a more relaxed pace and time for necessary stops. Keep an eye on your fuel, especially as you get further into West Texas, where services can be more spread out. Ensure you have enough fuel to comfortably reach your planned overnight stop. The fuel cost is estimated at $79, so budget accordingly.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 273.5 miles from Castle Hills, TX, or about 4h 25m into the drive.
The longest continuous stretch on this route runs about 535.3 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 120 miles or 1h 58m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 273.5 miles or 4h 25m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 273.5 miles or 4h 25m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 7h 50m
Traffic, exits, and arrival timing usually matter more near El Paso, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Castle Hills, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Castle Hills, TX
Aim for roughly 274 miles and 4.4 hours of wheel time on this day.
Day 2
Finish the approach into El Paso, TX
Aim for roughly 274 miles and 4.4 hours of wheel time on this day.
Your first comfortable stop window is around 120 miles from Castle Hills, TX.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 10 for about 535.3 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 9
5 decision points cluster between mile 0.6 and 546.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.6 mi into trip|~1m in
Take the ramp toward I 410 West
Lane positioning matters here
Use the slight left lane.
Toward I 410 West
8
2.2 mi into trip|~3m in
Take the exit toward I 10 East, US 87 South, I 10 West, US 87 North: San Antonio, El Paso
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 16
Toward I 10 East, US 87 South, I 10 West, US 87...
8
2.4 mi into trip|~3m in
Keep slight right at fork toward I 10 West, US 87 North: El Paso
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Toward I 10 West, US 87 North: El Paso
6
11 mi into trip|~14m 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.
8
546.3 mi into trip|~8h 47m in
Take the exit toward Missouri Avenue, Downtown
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 19B
Toward Missouri Avenue, Downtown
Fuel & Cost
Regular Gas
$74.94 one way
$149.87 round trip
$3.48/gal25.4 MPG avg191 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$3.89
$83.70
$167.40
premium
$4.23
$91.00
$182.01
diesel
$4.80
$103.30
$206.61
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$75
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$205–$315
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 191.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $57 in charging
· 2 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
164.1
2
$57.45
$26.26
Efficient EV
136.8
1
$47.87
$21.88
EV Truck/SUV
218.8
2
$76.59
$35.01
Gas CO2
191 kg
EV CO2
64 kg (66% less)
Plan for 2 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 Jul 16, 2026
Origin
Castle Hills, TX
Evening
in Castle Hills on Monday
Local time
7:29 PM
CDT
Current temp
86°F
Chance Showers And Thunderstorms
SE 10 mph47% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 4:33PM CDT until July 16 at 4:45PM CDT by NWS Midland/Odessa TX
Special Weather Statement
Special Weather Statement issued July 16 at 4:29PM CDT by NWS Fort Worth TX
Destination
El Paso, TX
Evening
in El Paso on Monday
Local time
6:29 PM
MDT
Current temp
93°F
Slight Chance Showers And Thunderstorms
E 7 mph15% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 4:33PM CDT until July 16 at 4:45PM CDT by NWS Midland/Odessa TX
Special Weather Statement
Special Weather Statement issued July 16 at 4:29PM CDT by NWS Fort Worth TX
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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
7 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
8h 49m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
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.
Chamizal National Memorial
National Memorial
Chamizal is more than just an urban park to recreate or enjoy a quiet afternoon. These grounds are a reminder of the harmonious settlement of a 100-year boundary dispute between the United States and...
2 mi from route
~5 min detour
Free
near mile 547.1
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...
Lyndon B. Johnson National Historical Park tells the story of our 36th president beginning with his ancestors until his final resting place on his beloved LBJ Ranch. This entire "circle of life" gives...
27 mi from route
~68 min detour
Free
near mile 37.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a 99% highway drive, meaning you'll spend almost the entire 547.1 miles on major roadways like I 10. The longest continuous stretch on I 10 is 535.3 miles, so expect long periods of consistent cruising. You'll primarily use I 10, McDermott Freeway, and Connally Loop. The drive transitions from urban access roads near the start to more open highway driving as you progress westward.
99% highway — fuel and pacing are the main things to plan.
13 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 535.3 mi on I 10.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 10 and McDermott Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.6 miles in.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 9 significant decision points across 547.1 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 0.6 miles: Lane positioning matters here; at 2.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 2.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
El Paso is the sixth largest city in Texas, with 679,000 residents (2020). It is on the United States-Mexico border. The city on the other side of the border is Ciudad Juarez, Chihuahua. El Paso is often called the Sun City. Collectively, the city of El Paso and other nearby cities, such as Juarez and Las Cruces, New Mexico are referred to as The Borderland.
Top landmarks
•El Paso Museum of Art — art museum in El Paso, Texas
•Union Depot — historic place in El Paso, El Paso County, Texas
•Plaza Theatre — building in El Paso, El Paso County, Texas
The longest stretch is about 535.3 miles on I 10. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 274 miles on day one.
Yes — we found about 55 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 El Paso, 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 2 meaningful breaks. There are 55 rest areas along the route for bathroom stops.
The main spots that need attention: at 0.6 miles: Lane positioning matters here; at 2.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 2.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Chamizal National Memorial, San Antonio Missions National Historical Park and Lyndon B Johnson National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 8.8 hours each way, a round trip means 17.6 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at El Paso, TX before the return drive.
