Hercules, CA to San Bernardino, CA is 436.2 miles and takes about 8h 7m via Westside Freeway and Foothill Freeway, with a fuel budget near $99 and enough daylight to finish in a day. This drive primarily covers ground within California, transitioning from the Pacific Coast region towards the inland areas. It's a substantial trip that leans heavily on freeway travel, making it a straightforward option for those prioritizing efficiency. Consider this route if you're looking for a direct path across a good portion of the state with minimal complexity.
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
218.1 miles from Hercules, CA
A natural place for your longest stop of the day
, about 4h 1m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
224.4 mi
4h
Foothill Freeway
73.7 mi
1h 24m
I 5 Truck
58.4 mi
1h 6m
Arthur H. Breed Junior Freeway
19.2 mi
22m
William Elton Brown Freeway
17 mi
18m
Donald D Doyle Highway
14.8 mi
17m
John Muir Parkway
12.8 mi
15m
Senator Daniel E Boatwright Highway
7.3 mi
8m
Longest stretch:
Westside Freeway
— 224.4 mi, about 4h
Traffic on I-5
Hour-of-day weekday pattern from 162 FHWA count stations on your route.
Peak
2 PM
~1,824 veh/hr typical
· worst 2,650
Quietest
2 AM
~367 veh/hr
Peak-to-quiet ratio
5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 89 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 Hercules, CA and San Bernardino, CA.
1
Start on Railroad Avenue
0.2 mi·33 sec·Railroad Avenue
2
Continue on Bayfront Boulevard
0.3 mi·39 sec·Bayfront Boulevard
3
Continue on John Muir Parkway
13 mi·15 min·John Muir Parkway
Use the straight / right lanes.
4
Take the exit
0.6 mi·1 min
Exit 12BToward I 680 South: San JoseUse the straight / slight right lanes.
5
Merge onto I 680
2.5 mi·2 min·Senator Daniel E Boatwright Highway
Use the straight / slight right lanes.
6
Keep slight right at fork onto I 680
4.8 mi·5 min·Senator Daniel E Boatwright Highway
Use the straight / slight right lanes.
7
Continue on I 680
1.4 mi·1 min·Donald D Doyle Highway
8
Keep slight right at fork onto I 680
13 mi·15 min·Donald D Doyle Highway
Use the straight / slight right lanes.
9
Take the exit
0.3 mi·33 sec
Exit 30AToward I 580 East: Livermore, StocktonUse the straight / slight right lanes.
10
Keep slight left at fork
0.7 mi·1 min
Toward I 580 East: Livermore, StocktonUse the straight / slight right lanes.
11
Keep slight left at fork
0.3 mi·38 sec
Toward I 580: StocktonUse the straight / slight right lanes.
12
Merge onto I 580
1.4 mi·1 min·Arthur H. Breed Junior Freeway
13
Keep slight right at fork onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
14
Keep slight right at fork onto I 580
11 mi·11 min·William Elton Brown Freeway
15
Keep slight left at fork onto I 580
5.9 mi·6 min·William Elton Brown Freeway
16
Merge onto I 5
224 mi·4 hr·Westside Freeway
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 5 Truck
58 mi·1 hr 6 min·I 5 Truck
Use the straight / slight right lanes.
18
Keep slight left at fork onto I 5
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
19
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse the slight right lane.
20
Continue on I 210
24 mi·28 min·Foothill Freeway
Use the straight / slight right lanes.
21
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.
22
Keep slight right at fork onto I 210
2.9 mi·3 min·Foothill Freeway
Use the straight / slight right lanes.
23
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
24
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
25
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
26
Keep slight right at fork onto CA 210
23 mi·26 min·Foothill Freeway
Use the straight / slight right lanes.
27
Take the exit
0.2 mi·29 sec
Exit 74Toward I 215: Barstow, RiversideUse the straight / slight right lanes.
28
Keep slight right at fork
0.6 mi·1 min
Exit 74Toward I 215 South: RiversideUse the slight left / slight right lanes.
29
Merge onto I 215
0.2 mi·13 sec·Barstow Freeway
30
Continue on I 215
1.8 mi·2 min·San Bernardino Freeway
31
Take the exit
0.4 mi·52 sec
Exit 44AToward CA 66 West: 5th Street, Civic CenterUse the slight right lane.
32
Turn left onto CA 66
0.8 mi·1 min·West 5th Street
Use the left / straight / right lanes.
33
Arrive at destination
West 5th Street
Trip Plan
Given the 8-hour estimated duration, this is realistically a two-day trip to avoid fatigue. Aim to depart early in the morning on your first day to maximize daylight. Plan for two stops along the way, ensuring you refuel and take breaks. The longest stretch is over 200 miles, so be prepared for that segment without frequent services. Splitting the drive means you can comfortably cover around 218 miles per day, making the first day's drive ending somewhere around the Bakersfield area, then completing the remaining 218 miles on day two.
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 218.1 miles from Hercules, CA, or about 4h 1m into the drive.
The longest continuous stretch on this route runs about 224.4 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 96 miles or 1h 50m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 218.1 miles or 4h 1m 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 218.1 miles or 4h 1m
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 6h 56m
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 Hercules, 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.
+
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 Hercules, CA
Aim for roughly 218 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into San Bernardino, CA
Aim for roughly 218 miles and 4.1 hours of wheel time on this day.
Your first comfortable stop window is around 96 miles from Hercules, CA.
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 Westside Freeway for about 224.4 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 27
5 decision points cluster between mile 36.1 and 432.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
36.1 mi into trip|~43m in
Take the exit toward I 580 East: Livermore, Stockton
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 30A
Toward I 580 East: Livermore, Stockton
8
36.3 mi into trip|~43m in
Keep slight left at fork toward I 580 East: Livermore, Stockton
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 580 East: Livermore, Stockton
8
383 mi into trip|~7h 4m 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
432.2 mi into trip|~8h 1m 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
432.4 mi into trip|~8h 1m 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
Fuel & Cost
Regular Gas
$99.38 one way
$198.76 round trip
$5.79/gal25.4 MPG avg153 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.96
$102.34
$204.67
premium
$6.14
$105.44
$210.89
diesel
$5.97
$102.47
$204.95
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$99
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$229–$339
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 152.6 kg one way.
Prices: EIA weekly data, 2026-09-07.
Driving Electric?
About $46 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
130.9
1
$45.80
$20.94
Efficient EV
109.1
1
$38.17
$17.45
EV Truck/SUV
174.5
2
$61.07
$27.92
Gas CO2
153 kg
EV CO2
51 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 as of Sep 4, 2026
Origin
Hercules, CA
Afternoon
in Hercules on Friday
Local time
4:34 PM
PDT
Current temp
56°F
Partly Cloudy
WSW 7 mph0% chanceLive forecast
Lake Wind Advisory
Lake Wind Advisory issued September 4 at 2:02AM PDT until September 4 at 9:00PM PDT by NWS Reno NV
Beach Hazards Statement
Beach Hazards Statement issued September 3 at 11:26PM PDT until September 7 at 11:00PM PDT by NWS Eureka CA
Destination
San Bernardino, CA
Afternoon
in San Bernardino on Friday
Local time
4:34 PM
PDT
Current temp
59°F
Mostly Clear
0 mph1% chanceLive forecast
Lake Wind Advisory
Lake Wind Advisory issued September 4 at 2:02AM PDT until September 4 at 9:00PM PDT by NWS Reno NV
Beach Hazards Statement
Beach Hazards Statement issued September 3 at 11:26PM PDT until September 7 at 11:00PM PDT by NWS Eureka CA
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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
3 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 7m 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.
Port Chicago Naval Magazine National Memorial
National Memorial
On July 17, 1944, a massive explosion jolted the San Francisco East Bay area, shattering windows and lighting up the night sky. At Port Chicago Naval Magazine, 320 men were killed instantly when two s...
Rosie the Riveter WWII Home Front National Historical Park
National Historical Park
Celebrate and honor the contributions and sacrifices of American civilians on the WWII home front. Discover how diverse communities lived, worked, and interacted. Many faces, many stories, many truths...
Established in 1988, San Francisco Maritime National Historical Park celebrates America’s maritime heritage on the Pacific Coast. Our 50-acre park has grown around Aquatic Park Cove, a protected area...
Walk among old growth coast redwoods, cooling their roots in the fresh water of Redwood Creek and lifting their crowns to reach the sun and fog. Federally protected as a National Monument since 1908,...
Experience a park so rich it supports 19 distinct ecosystems with over 2,000 plant and animal species. Go for a hike, enjoy a vista, have a picnic or learn about the centuries of overlapping history f...
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...
24 mi from route
~60 min detour
Free
near mile 361
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll be on the highway for 94% of this 436.2-mile trip, with the longest continuous stretch covering 224.4 miles on the Westside Freeway. This means extended periods of steady driving. The transition away from the primary highway system will occur towards the end of your drive as you approach San Bernardino. Expect a lot of freeway exits and merges as you navigate the urban and suburban landscapes.
94% highway — fuel and pacing are the main things to plan.
33 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 224.4 mi on Westside Freeway.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Westside Freeway and Foothill Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 36.1 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 27 significant decision points across 436.2 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 36.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 36.3 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 383 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
3,455 ft72 ft
Total Climb
4,405 ft
Total Descent
3,425 ft
Highest Point
3,455 ft
~311.6 mi in
Elevation Range
3,383 ft
Notable High Points
3,455 ft at ~311.6 miles+2,219 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Hercules, CA and San Bernardino, CA, road signs point toward Stockton and Ventura.
Pinole is in the north of Contra Costa County in the San Francisco Bay Area in California on the southern shore of San Pablo Bay. Hercules is a suburban community next door. Neither of them have much to attract tourists, but they do have a selection of restaurants as well as walking and biking paths through the wetlands along the bay.
The longest stretch is about 224.4 miles on Westside Freeway. 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 218 miles on day one.
Yes — we found about 35 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 Bernardino, CA 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 35 rest areas along the route for bathroom stops.
The main spots that need attention: at 36.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 36.3 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 383 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Port Chicago Naval Magazine National Memorial, Rosie the Riveter WWII Home Front National Historical Park and San Francisco Maritime National Historical Park (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 8.1 hours each way, a round trip means 16.3 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Bernardino, CA before the return drive.
