This 156.1-mile drive from Greenfield, CA to San Bernardino, CA is designed for a single day, taking approximately 3 hours and 2 minutes to complete. With 94% of the journey on highways, you'll primarily be on the Foothill Freeway and Golden State Freeway, with a segment on South Union Avenue. The estimated fuel cost for this trip is around $36, making it an economical option. This route focuses on efficient travel between two points within the Pacific Coast region, offering a straightforward journey for those seeking to cover ground quickly. It's a practical choice for a day trip, allowing for flexibility in your schedule.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
78 miles from Greenfield, CA
A natural place for your longest stop of the day
, about 1h 30m into the drive
.
Doable as a same-day drive at 3h 2m. Total distance: 156.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 2m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (94%). Some complex stretches to watch for.
Drive Character
Expect a highway-focused drive for the majority of this 156.1-mile trip, with 94% of the route utilizing major freeways. You'll spend a significant amount of time on the Foothill Freeway and Golden State Freeway. The longest uninterrupted stretch you'll encounter is 73.7 miles on the Foothill Freeway, meaning you can settle in for a good period without frequent exits. While primarily highway, the inclusion of South Union Avenue suggests a potential shift in scenery or speed as you approach your destination. This drive is built for sustained momentum.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 22 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Foothill Freeway is the longest continuous segment at about 73.7 miles.
How Hard Is This Drive?
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 78.1 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 17 significant decision points across 156.1 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 78.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 102.8 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 152.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 17 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
7
78.1 mi into trip|~1h 30m 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
102.8 mi into trip|~1h 59m 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
152.1 mi into trip|~2h 55m 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
152.3 mi into trip|~2h 56m 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
154.9 mi into trip|~2h 59m 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
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 Greenfield, CA to San Bernardino, CA, road signs begin pointing toward Ventura along the way.
Ventura
102.8 mi in|~1h 59m|via I 210
Main Roads
Road
Distance
Duration
Foothill Freeway
73.7 mi
1h 24m
Golden State Freeway
70.8 mi
1h 20m
South Union Avenue
6.8 mi
9m
San Bernardino Freeway
1.8 mi
2m
West 5th Street
0.8 mi
1m
Barstow Freeway
0.2 mi
<1m
Longest stretch:
Foothill Freeway
— 73.7 mi, about 1h 24m
Turn-by-Turn Driving Directions
Step-by-step road directions between Greenfield, CA and San Bernardino, CA.
1
Start on this road
37 ft·4 sec·this road
2
Turn right onto CA 99 BUS
0.1 mi·15 sec·South Union Avenue
3
Continue on CA 99 BUS
6.7 mi·9 min·South Union Avenue
4
Take the ramp
0.5 mi·35 sec
Toward 99
5
Merge onto CA 99
11 mi·11 min·Golden State Freeway
Use the straight / slight right lanes.
6
Keep slight left at fork onto CA 99
58 mi·1 hr 6 min·Golden State Freeway
Use the straight / slight right lanes.
7
Keep slight left at fork onto I 5
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
8
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse the slight right lane.
9
Continue on I 210
24 mi·28 min·Foothill Freeway
Use the straight / slight right lanes.
10
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.
11
Keep slight right at fork onto I 210
2.9 mi·3 min·Foothill Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
13
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
14
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
15
Keep slight right at fork onto CA 210
23 mi·26 min·Foothill Freeway
Use the straight / slight right lanes.
16
Take the exit
0.2 mi·29 sec
Exit 74Toward I 215: Barstow, RiversideUse the straight / slight right lanes.
17
Keep slight right at fork
0.6 mi·1 min
Exit 74Toward I 215 South: RiversideUse the slight left / slight right lanes.
18
Merge onto I 215
0.2 mi·13 sec·Barstow Freeway
19
Continue on I 215
1.8 mi·2 min·San Bernardino Freeway
20
Take the exit
0.4 mi·52 sec
Exit 44AToward CA 66 West: 5th Street, Civic CenterUse the slight right lane.
21
Turn left onto CA 66
0.8 mi·1 min·West 5th Street
Use the left / straight / right lanes.
22
Arrive at destination
West 5th Street
Trip Plan
With a duration of just over 3 hours, this 156.1-mile drive is perfectly suited for a single day trip. You can easily depart Greenfield, CA in the morning and arrive in San Bernardino, CA by midday. The longest stretch without a major change is 73.7 miles, so plan your fuel and rest stops accordingly, perhaps around the halfway point. Given the $36 fuel cost estimate, keeping your tank topped up is advisable. Consider leaving early to avoid any potential traffic, especially as you approach more populated areas. Your flexibility with a shorter drive like this means you can make spontaneous stops if needed.
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 78 miles from Greenfield, CA, or about 1h 30m 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 34 miles or 40m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 78 miles or 1h 30m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 27m
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 Greenfield, CA 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 Greenfield, CA
This is one driving day of about 156.1 miles and 3h 2m.
Your first comfortable stop window is around 34 miles from Greenfield, CA.
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 Foothill Freeway for about 73.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 78 mi from Greenfield, CA
· 1h 30m into the drive
The midpoint is around 78 miles from Greenfield, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Foothill Freeway if your tank is already low. That segment runs about 73.7 miles.
Arriving in San Bernardino, CA
The final approach into San Bernardino, CA 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 San Bernardino, CA.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Nearby Places
Restaurants, cafes, gas stations and more along your route.
Place data sourced from public business listings. Hours and availability may vary.
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 75.3
Yes, we can! Widely recognized as the most important Latino leader in the United States during the twentieth century, Cesar Chavez led farm workers and supporters in the establishment of the country's...
25 mi from route
~63 min detour
Free
near mile 5.4
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$35.88 one way
$71.76 round trip
$5.84/gal25.4 MPG avg55 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$36.97
$73.94
premium
$6.18
$37.96
$75.92
diesel
$5.61
$34.46
$68.93
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$36
Meals
$25–$50
Total
$61–$86
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 54.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $16 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
46.8
0
$16.39
$7.49
Efficient EV
39
0
$13.66
$6.24
EV Truck/SUV
62.4
0
$21.85
$9.99
Gas CO2
55 kg
EV CO2
18 kg (67% 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 15, 2026
Origin
Greenfield, CA
Evening
in Greenfield on Friday
Local time
8:00 PM
PDT
Current temp
77°F
Unavailable
Live forecast
Destination
San Bernardino, CA
Evening
in San Bernardino on Friday
Local time
8:00 PM
PDT
Current temp
77°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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
3h 2m 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 Greenfield, CA to San Bernardino, CA covers 156.1 miles and takes about 3h 2m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Foothill Freeway, Golden State Freeway, South Union 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 78 miles from Greenfield, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $35.88 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 17 significant decision points across 156.1 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.
The main spots that need attention: at 78.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 102.8 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 152.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Greenfield, CA to San Bernardino, CA, road signs begin pointing toward Ventura along the way.
Yes. Nearby national parks include Santa Monica Mountains National Recreation Area and César E. Chávez National Monument.
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, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
