Boron to San Francisco is 373.3 miles and takes about 7 hours via Westside Freeway, with a fuel budget near $85 and enough daylight to finish in a day. This trip crosses California from the Pacific Coast region towards another part of the same coast, primarily on highways. Given the 7-hour drive time, it's a route you can comfortably complete in a single day. You'll spend most of your time on well-maintained freeways, making it a straightforward drive if you're looking for efficiency.
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
186.6 miles from Boron, CA
A natural place for your longest stop of the day
, about 3h 31m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
192.7 mi
3h 26m
Bakersfield Tehachapi Highway
54.6 mi
1h 3m
Arthur H. Breed Junior Freeway
29.6 mi
34m
Mojave-Barstow Highway
25.9 mi
28m
William Elton Brown Freeway
17 mi
18m
MacArthur Freeway
15.5 mi
17m
Stockdale Highway
8.9 mi
12m
Barstow–Bakersfield Highway
8.2 mi
9m
Longest stretch:
Westside Freeway
— 192.7 mi, about 3h 26m
Traffic on I-5
Hour-of-day weekday pattern from 76 FHWA count stations on your route.
Peak
3 PM
~1,391 veh/hr typical
· worst 2,030
Quietest
2 AM
~302 veh/hr
Peak-to-quiet ratio
4.6×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 43 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 Boron, CA and San Francisco, CA.
1
Start on Boron Avenue
0.8 mi·1 min·Boron Avenue
2
Take the ramp
0.2 mi·30 sec
3
Merge onto CA 58
26 mi·28 min·Mojave-Barstow Highway
4
Continue on CA 58
8.2 mi·9 min·Barstow–Bakersfield Highway
5
Continue on CA 58
0.7 mi·50 sec·Bakersfield–Tehachapi Highway
6
Continue on CA 58
55 mi·1 hr 3 min·Bakersfield Tehachapi Highway
Use the straight / slight right lanes.
7
Continue on CA 58
2.3 mi·2 min·Centennial Corridor
Use the straight / slight right lanes.
8
Continue on Westside Parkway
6.6 mi·8 min·Westside Parkway
Use the straight / slight right lanes.
9
Continue on Stockdale Highway
4.3 mi·5 min·Stockdale Highway
Use the straight lane.
10
Enter roundabout onto CA 58
149 ft·2 sec·Stockdale Highway
11
Continue on CA 58
4.5 mi·6 min·Stockdale Highway
12
Take the exit onto CA 58
0.5 mi·1 min·CA 58
Toward I 5 North
13
Merge onto I 5; CA 58
193 mi·3 hr 26 min·Westside Freeway
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 580
16 mi·17 min·William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
15
Keep slight right at fork onto I 580 Bypass
1.1 mi·1 min·William Elton Brown Freeway
16
Merge onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 580
12 mi·13 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto I 580
8.3 mi·9 min·MacArthur Freeway
Toward I 580: Oakland, San FranciscoUse the slight left / slight right lanes.
19
Keep slight left at fork onto I 580
7.2 mi·8 min·MacArthur Freeway
Use the straight / slight right lanes.
20
Take the exit
0.9 mi·1 min
Exit 19AToward I 80 West: San Francisco
21
Merge onto I 80
0.2 mi·17 sec·Dwight D. Eisenhower Highway
Toward I 80 West: San FranciscoUse the straight / slight right lanes.
22
Turn slight left onto I 80
0.4 mi·33 sec·Dwight D. Eisenhower Highway
23
Keep slight left at fork onto I 80
5.5 mi·8 min·Dwight D. Eisenhower Highway
Use the slight left lane.
24
Continue on I 80
0.3 mi·24 sec·Route 80
Use the straight / left / right lanes.
25
Continue on I 80
0.8 mi·1 min·Route 80
Exit 2AUse the straight / slight left lanes.
26
Continue on I 80
0.4 mi·32 sec·Route 80
Exit 1AUse the straight / slight right lanes.
27
Keep slight right at fork
0.4 mi·38 sec
Exit 1BToward US 101 North: Golden Gate BridgeUse the straight / slight right lanes.
28
Merge onto US 101
0.3 mi·25 sec·Central Freeway
29
Continue on Octavia Boulevard
0.5 mi·42 sec·Octavia Boulevard
Exit 434BToward Octavia Boulevard, Fell StreetUse the straight / slight right lanes.
30
Turn right onto Market Street
0.1 mi·31 sec·Market Street
Use the right lane.
31
Keep slight right at fork onto Market Street
0.2 mi·35 sec·Market Street
32
Arrive at destination
Market Street
Trip Plan
For this 7-hour drive, departing Boron in the morning, perhaps around 9 AM, should get you to San Francisco before evening. With only 2 recommended stops, plan them strategically for breaks and fuel. You'll cover a significant distance, with a 192.7-mile stretch on the Westside Freeway, so ensure you're well-rested before starting. The estimated fuel cost is $85, so factor that into your budget. Given it's a single-day trip, you have flexibility, but staying aware of traffic conditions as you near San Francisco is key.
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 186.6 miles from Boron, CA, or about 3h 31m into the drive.
The longest continuous stretch on this route runs about 192.7 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 82 miles or 1h 34m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 186.6 miles or 3h 31m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 47m
Traffic, exits, and arrival timing usually matter more near San Francisco, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Boron, 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 Boron, CA
This is one driving day of about 373.3 miles and 7h.
Your first comfortable stop window is around 82 miles from Boron, 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 192.7 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 21
5 decision points cluster between mile 301.4 and 371.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
301.4 mi into trip|~5h 34m in|I 580 / William Elton Brown Freeway
Keep slight left at fork onto I 580 / William Elton Brown Freeway toward I 580 West: Tracy, San Francisco
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 580 West: Tracy, San Francisco
6
336.3 mi into trip|~6h 13m in|I 580 / Arthur H. Breed Junior Freeway
Keep slight right at fork onto I 580 / Arthur H. Breed Junior Freeway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
348 mi into trip|~6h 27m in|I 580 / MacArthur Freeway
Keep slight right at fork onto I 580 / MacArthur Freeway toward I 580: Oakland, San Francisco
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 580: Oakland, San Francisco
6
356.3 mi into trip|~6h 36m in|I 580 / MacArthur Freeway
Keep slight left at fork onto I 580 / MacArthur Freeway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
371.8 mi into trip|~6h 57m in
Keep slight right at fork toward US 101 North: Golden Gate Bridge
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 1B
Toward US 101 North: Golden Gate Bridge
Fuel & Cost
Regular Gas
$78.10 one way
$156.20 round trip
$5.31/gal25.4 MPG avg131 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.52
$81.11
$162.22
premium
$5.67
$83.26
$166.52
diesel
$4.80
$70.49
$140.97
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$78
Meals
$25–$50
Total
$103–$128
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 130.6 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $39 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
112
1
$39.20
$17.92
Efficient EV
93.3
1
$32.66
$14.93
EV Truck/SUV
149.3
1
$52.26
$23.89
Gas CO2
131 kg
EV CO2
44 kg (66% 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 Jul 17, 2026
Origin
Boron, CA
Evening
in Boron on Monday
Local time
7:46 PM
PDT
Current temp
72°F
Mostly Clear
SW 9 to 14 mph1% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 11:09PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
Destination
San Francisco, CA
Evening
in San Francisco on Monday
Local time
7:46 PM
PDT
Current temp
55°F
Partly Cloudy
WSW 7 to 10 mph1% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 11:09PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
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
17 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 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...
2 mi from route
~6 min detour
Free
near mile 373.3
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...
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...
10 mi from route
~24 min detour
Free
near mile 360.4
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...
12 mi from route
~29 min detour
Free
near mile 373.3
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,...
12 mi from route
~30 min detour
$15
near mile 373.3
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...
21 mi from route
~52 min detour
Free
near mile 360.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is mostly highway, with 71% of the 373.3 miles on freeways like the Westside Freeway and Arthur H. Breed Junior Freeway. You'll encounter the longest continuous stretch of highway at 192.7 miles on the Westside Freeway, offering extended periods of consistent cruising. After the freeways, you'll transition to surface roads for the remaining miles, likely noticing denser exit patterns as you approach urban areas near your destination.
71% highway — fuel and pacing are the main things to plan.
32 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 192.7 mi on Westside Freeway.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on Westside Freeway and Bakersfield Tehachapi Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 301.4 miles in near I 580 / William Elton Brown Freeway.
Driving Effort9/10
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 21 significant decision points across 373.3 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 301.4 miles (I 580 / William Elton Brown Freeway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 336.3 miles (I 580 / Arthur H. Breed Junior Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 348 miles (I 580 / MacArthur Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
The centerpiece of the Bay Area, San Francisco is one of the most visited cities in the world, and with good reason. The cultural center of northern California, San Francisco is renowned for its mixture of scenic beauty and unique culture that makes it one of the most vibrant and desirable cities in the nation, if not the world.
Sandwiched between the San Francisco Bay and the Pacific Ocean on a small square of land seven miles (11 km) on each side, San Francisco offers a wealth of treasures for the visitor, from the windswept and often foggy bay to the steep hills lined with Victorian homes that overlook the spectacular scenery of the city.
Top landmarks
•Golden Gate Bridge — suspension bridge on the San Francisco Bay
•Alcatraz Island — island in San Francisco, California, United States of America
•San Francisco–Oakland Bay Bridge — suspension bridge connecting San Francisco and Oakland, California, USA
Doable as a same-day drive at 7h. Total distance: 373.3 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 192.7 miles on Westside Freeway. The full list of main roads is in the Roads section above.
Yes — we found about 29 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 Francisco, 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 29 rest areas along the route for bathroom stops.
The main spots that need attention: at 301.4 miles (I 580 / William Elton Brown Freeway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 336.3 miles (I 580 / Arthur H. Breed Junior Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 348 miles (I 580 / MacArthur Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — San Francisco Maritime National Historical Park, César E. Chávez National Monument and Rosie the Riveter WWII Home Front 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 7.0 hours each way, a round trip means 14.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Francisco, CA before the return drive.
