Spanning 92.8 miles, this trek from Castaic to San Bernardino is a straightforward journey typically taking about 1 hour and 49 minutes. Because the route is entirely contained within the Pacific Coast region of California, you will remain in a familiar climate as you traverse the heart of Southern California. With an estimated fuel cost of $21, this drive is budget-friendly and perfectly manageable as a single-day excursion. You won't need an overnight stay to complete this trip, allowing you to easily handle it in one go. It is an efficient, highway-focused route that connects two major inland hubs without unnecessary detours.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
46.4 miles from Castaic, CA
A natural place for your longest stop of the day
, about 54m into the drive
.
Main Roads
Road
Distance
Duration
Foothill Freeway
73.7 mi
1h 24m
Golden State Freeway
14.5 mi
16m
San Bernardino Freeway
1.8 mi
2m
West 5th Street
0.8 mi
1m
Barstow Freeway
0.2 mi
<1m
Parker Road
0.2 mi
<1m
Castaic Oak Lane
<0.1 mi
<1m
Longest stretch:
Foothill Freeway
— 73.7 mi, about 1h 24m
Turn-by-Turn Driving Directions
Step-by-step road directions between Castaic, CA and San Bernardino, CA.
1
Start on Castaic Oak Lane
63 ft·6 sec·Castaic Oak Lane
2
Turn right onto Parker Road
0.2 mi·31 sec·Parker Road
3
Take the ramp
0.2 mi·27 sec
Toward I 5 South: Los Angeles
4
Merge onto I 5
12 mi·14 min·Golden State Freeway
Use the straight / slight right lanes.
5
Keep slight left at fork onto I 5
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
6
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse the slight right lane.
7
Continue on I 210
24 mi·28 min·Foothill Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 210
19 mi·22 min·Foothill Freeway
Toward CA 134 West, I 210 East: San Bernardino, VenturaUse the slight right lane.
9
Keep slight right at fork onto I 210
2.9 mi·3 min·Foothill Freeway
Use the straight / slight right lanes.
10
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
11
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
13
Keep slight right at fork onto CA 210
23 mi·26 min·Foothill Freeway
Use the straight / slight right lanes.
14
Take the exit
0.2 mi·29 sec
Exit 74Toward I 215: Barstow, RiversideUse the straight / slight right lanes.
15
Keep slight right at fork
0.6 mi·1 min
Exit 74Toward I 215 South: RiversideUse the slight left / slight right lanes.
16
Merge onto I 215
0.2 mi·13 sec·Barstow Freeway
17
Continue on I 215
1.8 mi·2 min·San Bernardino Freeway
18
Take the exit
0.4 mi·52 sec
Exit 44AToward CA 66 West: 5th Street, Civic CenterUse the slight right lane.
19
Turn left onto CA 66
0.8 mi·1 min·West 5th Street
Use the left / straight / right lanes.
20
Arrive at destination
West 5th Street
Trip Plan
Given that this is a 92.8-mile drive, you have plenty of flexibility regarding your departure time, though traffic patterns in this corridor can be heavy. Since the entire trip is estimated to take less than two hours, you likely won't need to plan for formal rest stops, but keeping $21 in your budget for fuel will ensure you are ready for the road ahead. Because you will be spending nearly the entire time on the freeway, check local traffic reports before you leave to avoid potential congestion on the Golden State or San Bernardino freeways. Use the short duration to your advantage by planning your arrival to coincide with your specific needs, as this route requires very little logistical overhead.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 46.4 miles from Castaic, CA, or about 54m into the drive.
The longest continuous stretch on this route runs about 73.7 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 20 miles or 23m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 46.4 miles or 54m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 28m
Traffic, exits, and arrival timing usually matter more near San Bernardino, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Castaic, CA so your first major turns are already loaded.
Day 1
Settle into the route from Castaic, CA
This is one driving day of about 92.8 miles and 1h 49m.
Your first comfortable stop window is around 20 miles from Castaic, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Foothill Freeway for about 73.7 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 16
5 decision points cluster between mile 14.9 and 91.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
14.9 mi into trip|~17m in
Take the exit toward I 210 East: Pasadena
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 161A
Toward I 210 East: Pasadena
8
39.6 mi into trip|~46m in|I 210 / Foothill Freeway
Keep slight right at fork onto I 210 / Foothill Freeway toward CA 134 West, I 210 East: San Bernardino, Ventura
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward CA 134 West, I 210 East: San Bernardino,...
8
88.8 mi into trip|~1h 42m in
Take the exit toward I 215: Barstow, Riverside
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 74
Toward I 215: Barstow, Riverside
8
89 mi into trip|~1h 43m in
Keep slight right at fork toward I 215 South: Riverside
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 74
Toward I 215 South: Riverside
8
91.7 mi into trip|~1h 46m in
Take the exit toward CA 66 West: 5th Street, Civic Center
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 44A
Toward CA 66 West: 5th Street, Civic Center
Fuel & Cost
Regular Gas
$21.33 one way
$42.66 round trip
$5.84/gal25.4 MPG avg33 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$21.98
$43.96
premium
$6.18
$22.57
$45.14
diesel
$5.61
$20.49
$40.98
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$21
Meals
$25–$50
Total
$46–$71
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 32.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $10 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
27.8
0
$9.74
$4.45
Efficient EV
23.2
0
$8.12
$3.71
EV Truck/SUV
37.1
0
$12.99
$5.94
Gas CO2
32 kg
EV CO2
11 kg (66% 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.
Forecast as of Apr 19, 2026
Origin
Castaic, CA
Late night
in Castaic on Tuesday
Local time
5:03 AM
PDT
Current temp
70°F
Unavailable
Live forecast
Destination
San Bernardino, CA
Late night
in San Bernardino on Tuesday
Local time
5:03 AM
PDT
Current temp
71°F
Unavailable
Live forecast
53°F
Pasadena, CA
46 mi in
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
1 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
1h 49m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Santa Monica Mountains National Recreation Area
National Recreation Area
The Santa Monica Mountains offer easy access to surprisingly wild places. Experience the famous beaches of Malibu or explore more than 500 miles of trails. The park abounds with historical and cultura...
22 mi from route
~55 min detour
Free
near mile 12.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a high-speed experience, as 97% of your travel occurs on major highways. You will rely primarily on the Golden State Freeway, the Foothill Freeway, and the San Bernardino Freeway to navigate your way across the region. The most significant portion of your time behind the wheel involves a 73.7-mile stretch on the Foothill Freeway, which serves as the backbone of your journey. Since this is an interstate-heavy drive, you should prepare for a consistent, fast-paced rhythm rather than a winding or technical backroad experience. The character of the road remains functional and efficient, prioritizing speed and direct connections between your origin and destination.
97% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 73.7 mi on Foothill Freeway.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Foothill Freeway and Golden State Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 14.9 miles in.
Driving Effort10/10
Demanding - stay alert through the decision-heavy sections
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 92.8 miles you will encounter 16 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 14.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 39.6 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 88.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Castaic, CA to San Bernardino, CA, road signs begin pointing toward Ventura along the way.
Doable as a same-day drive at 1h 49m. Total distance: 92.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 49m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (97%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 73.7 miles on Foothill Freeway. The full list of main roads is in the Roads section above.
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 Bernardino, CA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 14.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 39.6 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 88.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Santa Monica Mountains National Recreation Area. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at San Bernardino, CA before heading back.
