San Bernardino to San Mateo is 421.7 miles and takes about 7h 58m via Westside Freeway, Foothill Freeway, and CA 152, with a fuel budget near $101 and enough daylight to finish in a day. This drive primarily sticks to highways, making it a straightforward trip up the California coast. You'll spend nearly all your time on paved, high-speed roads. Given the distance and duration, this route is best tackled in a single day, allowing for a relatively quick transit between Southern and Northern California.
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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
210.8 miles from San Bernardino, CA
A natural place for your longest stop of the day
, about 3h 58m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
182.5 mi
3h 15m
Foothill Freeway
73.8 mi
1h 25m
CA 152
41.1 mi
51m
US 101
38.1 mi
43m
I 5 Truck
37.1 mi
42m
Golden State Freeway
22.3 mi
25m
South Valley Freeway
19.9 mi
22m
San Bernardino Freeway
1.5 mi
1m
Longest stretch:
Westside Freeway
— 182.5 mi, about 3h 15m
Traffic on I-5
Hour-of-day weekday pattern from 69 FHWA count stations on your route.
Peak
2 PM
~1,524 veh/hr typical
· worst 2,324
Quietest
2 AM
~316 veh/hr
Peak-to-quiet ratio
4.8×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 44 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 San Bernardino, CA and San Mateo, CA.
1
Start on West 5th Street
0.7 mi·1 min·West 5th Street
2
Take the ramp
0.3 mi·45 sec
Toward I 215 North: Barstow
3
Merge onto I 215
1.5 mi·1 min·San Bernardino Freeway
Use the straight / slight right lanes.
4
Continue on I 215
0.5 mi·34 sec·Barstow Freeway
Use the straight / slight right lanes.
5
Take the exit
1.0 mi·2 min
Exit 46BToward CA 210 West: PasadenaUse the straight / slight right lanes.
6
Merge onto CA 210
21 mi·24 min·Foothill Freeway
Use the straight / slight right lanes.
7
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto CA 210
2.4 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
10
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
11
Keep slight right at fork onto CA 210
20 mi·23 min·Foothill Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 210
26 mi·29 min·Foothill Freeway
Exit 26AToward I 210 West: SacramentoUse the straight / slight right lanes.
13
Keep slight right at fork
0.1 mi·9 sec
Use the slight right lane.
14
Merge onto I 5 Truck
1.0 mi·1 min·I 5 Truck
Exit 161A
15
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
16
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 5
183 mi·3 hr 15 min·Westside Freeway
Toward I 5 NorthUse the straight / slight right lanes.
18
Take the exit
0.2 mi·26 sec
Exit 403BToward CA 152 West: Gilroy, Hollister, San Jose
19
Continue on CA 152; CA33
29 mi·33 min·CA 152; CA33
Use the straight lane.
20
Keep slight right at fork onto CA 152
12 mi·16 min·CA 152
21
Take the exit onto CA 152
0.5 mi·1 min·CA 152
Toward US 101 North: San Jose
22
Merge onto US 101; CA 152
20 mi·22 min·South Valley Freeway
Use the slight right lane.
23
Keep slight left at fork onto US 101
22 mi·25 min·US 101
Use the straight / slight right lanes.
24
Keep slight left at fork onto US 101
16 mi·18 min·US 101
Use the slight left lane.
25
Take the exit
0.1 mi·13 sec
Exit 414BToward CA 92 West, CA 92 East: Half Moon Bay, Hayward, San Mateo BridgeUse the straight / slight right lanes.
26
Keep slight left at fork
0.6 mi·42 sec
Toward CA 92 West: Half Moon BayUse the slight left lane.
27
Merge onto CA 92
0.4 mi·33 sec·J Arthur Younger Freeway
28
Take the exit
0.2 mi·32 sec
Exit 12AToward CA 82 : El Camino RealUse the straight / slight right lanes.
29
Turn right onto CA 82
1.1 mi·2 min·South El Camino Real
Use the right lane.
30
Arrive at destination
CA 82
Trip Plan
To make the most of this 7h 58m drive, aim to depart San Bernardino early, ideally before 7 AM, to minimize traffic delays. With a fuel cost estimated at $101, plan for at least one fuel stop. You'll encounter two recommended stops along the way, which are good opportunities to stretch your legs and refuel. Since this is a single-day trip, you have flexibility, but keep an eye on your progress, especially when transitioning onto CA 152, as this marks the end of your primary highway travel.
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.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 210.8 miles from San Bernardino, CA, or about 3h 58m into the drive.
The longest continuous stretch on this route runs about 182.5 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 93 miles or 1h 49m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 210.8 miles or 3h 58m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 47m
Traffic, exits, and arrival timing usually matter more near San Mateo, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving San Bernardino, 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.
Day 1
Settle into the route from San Bernardino, CA
This is one driving day of about 421.7 miles and 7h 58m.
Your first comfortable stop window is around 93 miles from San Bernardino, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 182.5 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 26
5 decision points cluster between mile 3.1 and 419.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
3.1 mi into trip|~4m in
Take the exit toward CA 210 West: Pasadena
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 46B
Toward CA 210 West: Pasadena
8
52.2 mi into trip|~1h 2m in|I 210 / Foothill Freeway
Keep slight right at fork onto I 210 / Foothill Freeway toward I 210 West: Sacramento
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 26A
Toward I 210 West: Sacramento
7
137.4 mi into trip|~2h 40m in|I 5 / Westside Freeway
Keep slight right at fork onto I 5 / Westside Freeway toward I 5 North
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 5 North
8
419.3 mi into trip|~7h 54m in
Take the exit toward CA 92 West, CA 92 East: Half Moon Bay, Hayward, San Mateo Bridge
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 414B
Toward CA 92 West, CA 92 East: Half Moon Bay, H...
7
419.4 mi into trip|~7h 54m in
Keep slight left at fork toward CA 92 West: Half Moon Bay
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward CA 92 West: Half Moon Bay
Fuel & Cost
Regular Gas
$99.03 one way
$198.07 round trip
$5.97/gal25.4 MPG avg148 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.18
$102.64
$205.27
premium
$6.30
$104.55
$209.09
diesel
$5.35
$88.82
$177.65
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$99
Meals
$25–$50
Total
$124–$149
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 147.5 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $44 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
126.5
1
$44.28
$20.24
Efficient EV
105.4
1
$36.90
$16.87
EV Truck/SUV
168.7
2
$59.04
$26.99
Gas CO2
148 kg
EV CO2
49 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 Jun 1, 2026
Origin
San Bernardino, CA
Afternoon
in San Bernardino on Wednesday
Local time
12:53 PM
PDT
Current temp
60°F
Mostly Clear
0 mph0% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued May 31 at 1:12PM PDT until June 2 at 5:00AM PDT by NWS San Francisco CA
Destination
San Mateo, CA
Afternoon
in San Mateo on Wednesday
Local time
12:53 PM
PDT
Current temp
53°F
Mostly Clear
WSW 1 mph0% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued May 31 at 1:12PM PDT until June 2 at 5:00AM PDT by NWS San Francisco 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.
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
7 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
7h 58m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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.
San Francisco Maritime National Historical Park
National Historical Park
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...
18 mi from route
~45 min detour
Free
near mile 421.7
Caution: Temporary Closure Aquatic Park Cove Due to Dock Work
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...
24 mi from route
~60 min detour
Free
near mile 421.7
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
~61 min detour
Free
near mile 72.7
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...
25 mi from route
~64 min detour
Free
near mile 421.7
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,...
27 mi from route
~67 min detour
$15
near mile 421.7
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...
28 mi from route
~71 min detour
Free
near mile 145.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is 99% highway, so expect consistent cruising on freeways for the vast majority of the 421.7 miles. The longest continuous stretch you'll encounter is 182.5 miles on the Westside Freeway. You'll experience a significant amount of merging and exiting activity as you navigate urban and suburban areas, particularly in the early and later parts of the drive. Expect minimal time on surface streets.
99% highway — fuel and pacing are the main things to plan.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 182.5 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 3.1 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 26 significant decision points across 421.7 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 3.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 52.2 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 137.4 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Hilly terrain with moderate elevation changes
4,036 ft45 ft
Total Climb
3,911 ft
Total Descent
4,917 ft
Highest Point
4,036 ft
~120.5 mi in
Elevation Range
3,990 ft
Notable High Points
4,036 ft at ~120.5 miles+2,981 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between San Bernardino, CA and San Mateo, CA, road signs point toward Hollister and San Jose.
Doable as a same-day drive at 7h 58m. Total distance: 421.7 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 58m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 182.5 miles on Westside Freeway. 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 Mateo, 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 27 rest areas along the route for bathroom stops.
The main spots that need attention: at 3.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 52.2 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 137.4 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — San Francisco Maritime National Historical Park, Rosie the Riveter WWII Home Front National Historical Park and Santa Monica Mountains National Recreation Area (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 8.0 hours each way, a round trip means 16.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Mateo, CA before the return drive.
