This approximately 382-mile drive from Altadena, CA to San Francisco, CA is a substantial undertaking, clocking in at just over 7 hours of pure driving time. It's primarily a highway-focused journey, with 97% of the route utilizing major freeways like the Westside Freeway and I 5 Truck. Given its length and the consistent highway travel, it's definitely manageable as a single-day trip, though you'll want to factor in two planned stops for breaks. With an estimated fuel cost of $88, this route offers a direct and efficient way to travel between the Pacific Coast regions of 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
191.2 miles from Altadena, CA
A natural place for your longest stop of the day
, about 3h 34m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 8m. Total distance: 382.4 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 8m drive, plan rest stops for pacing.
Drive Character
Expect a predominantly highway-focused experience on this route, covering 97% freeway miles. The longest uninterrupted stretch you'll encounter is a significant 225.6 miles on the Westside Freeway, demanding sustained attention. You'll navigate major arteries like the Arthur H. Breed Junior Freeway, indicating a consistent pace for much of the journey. While not a winding scenic byway, this route prioritizes efficient travel, moving you steadily north through California's landscape.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 31 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Westside Freeway is the longest continuous segment at about 225.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Westside Freeway and I 5 Truck. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 25.4 miles in.
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 27 significant decision points across 382.4 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 25.4 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 26.5 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 84.9 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 27 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
6
25.4 mi into trip|~32m in
Keep slight right at fork
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
6
26.5 mi into trip|~34m in|I 5 Truck
Keep slight left at fork onto I 5 Truck
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
7
84.9 mi into trip|~1h 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
357.1 mi into trip|~6h 34m 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
8
380.9 mi into trip|~7h 5m 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
Main Roads
Road
Distance
Duration
Westside Freeway
225.6 mi
4h 1m
I 5 Truck
37.1 mi
42m
Arthur H. Breed Junior Freeway
29.6 mi
34m
Foothill Freeway
22.3 mi
25m
Golden State Freeway
22.3 mi
25m
William Elton Brown Freeway
17 mi
18m
MacArthur Freeway
15.5 mi
17m
Dwight D. Eisenhower Highway
6 mi
9m
Longest stretch:
Westside Freeway
— 225.6 mi, about 4h 1m
Turn-by-Turn Driving Directions
Step-by-step road directions between Altadena, CA and San Francisco, CA.
1
Start on North Lake Avenue
154 ft·5 sec·North Lake Avenue
2
Turn left onto East Altadena Drive
0.6 mi·1 min·East Altadena Drive
Use the left lane.
3
Turn left onto Marengo Avenue
0.7 mi·1 min·Marengo Avenue
4
Turn right onto East Woodbury Road
1.3 mi·2 min·East Woodbury Road
Use the right lane.
5
Turn left onto Windsor Avenue
0.1 mi·17 sec·Windsor Avenue
6
Take the ramp
0.3 mi·44 sec
Toward I 210 West: San Fernando
7
Merge onto I 210
22 mi·25 min·Foothill Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork
0.1 mi·9 sec
Use the slight right lane.
9
Merge onto I 5 Truck
1.0 mi·1 min·I 5 Truck
Exit 161A
10
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
11
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 5
226 mi·4 hr 1 min·Westside Freeway
Toward I 5 NorthUse the straight / slight right lanes.
13
Keep slight left at fork onto I 580
16 mi·17 min·William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
14
Keep slight right at fork onto I 580 Bypass
1.1 mi·1 min·William Elton Brown Freeway
15
Merge onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
16
Keep slight right at fork onto I 580
12 mi·13 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
17
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.
18
Keep slight left at fork onto I 580
7.2 mi·8 min·MacArthur Freeway
Use the straight / slight right lanes.
19
Take the exit
0.9 mi·1 min
Exit 19AToward I 80 West: San Francisco
20
Merge onto I 80
0.2 mi·17 sec·Dwight D. Eisenhower Highway
Toward I 80 West: San FranciscoUse the straight / slight right lanes.
21
Turn slight left onto I 80
0.4 mi·33 sec·Dwight D. Eisenhower Highway
22
Keep slight left at fork onto I 80
5.5 mi·8 min·Dwight D. Eisenhower Highway
Use the slight left lane.
23
Continue on I 80
0.3 mi·24 sec·Route 80
Use the straight / left / right lanes.
24
Continue on I 80
0.8 mi·1 min·Route 80
Exit 2AUse the straight / slight left lanes.
25
Continue on I 80
0.4 mi·32 sec·Route 80
Exit 1AUse the straight / slight right lanes.
26
Keep slight right at fork
0.4 mi·38 sec
Exit 1BToward US 101 North: Golden Gate BridgeUse the straight / slight right lanes.
27
Merge onto US 101
0.3 mi·25 sec·Central Freeway
28
Continue on Octavia Boulevard
0.5 mi·42 sec·Octavia Boulevard
Exit 434BToward Octavia Boulevard, Fell StreetUse the straight / slight right lanes.
29
Turn right onto Market Street
0.1 mi·31 sec·Market Street
Use the right lane.
30
Keep slight right at fork onto Market Street
0.2 mi·35 sec·Market Street
31
Arrive at destination
Market Street
Trip Plan
For this 7-hour drive, starting early is your best bet to maximize daylight and minimize traffic, especially as you approach major urban areas. Plan for two stops, perhaps breaking up the longest stretch of 225.6 miles on the Westside Freeway. Keep an eye on your fuel gauge; with an estimated cost of $88, it's wise to top off before embarking on the longest highway segments. Since this is a single-day trip, you have flexibility, but prioritizing a smooth and efficient journey means staying aware of the freeway conditions.
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 191.2 miles from Altadena, CA, or about 3h 34m into the drive.
The longest continuous stretch on this route runs about 225.6 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 84 miles or 1h 39m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 191.2 miles or 3h 34m 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 55m
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 Altadena, 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 Altadena, CA
This is one driving day of about 382.4 miles and 7h 8m.
Your first comfortable stop window is around 84 miles from Altadena, 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 225.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 191.2 mi from Altadena, CA
· 3h 34m into the drive
The midpoint is around 191.2 miles from Altadena, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Westside Freeway if your tank is already low. That segment runs about 225.6 miles.
Arriving in San Francisco, CA
The final approach into San Francisco, 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 Francisco, CA.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
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 382.4
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
~25 min detour
Free
near mile 382.4
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 382.4
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 382.4
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 369.2
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 26.4
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $40 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
114.7
1
$40.15
$18.36
Efficient EV
95.6
1
$33.46
$15.30
EV Truck/SUV
153
1
$53.54
$24.47
Gas CO2
134 kg
EV CO2
45 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 Apr 15, 2026
Origin
Altadena, CA
Afternoon
in Altadena on Thursday
Local time
2:22 PM
PDT
Current temp
73°F
Unavailable
Live forecast
Destination
San Francisco, CA
Afternoon
in San Francisco on Thursday
Local time
2:22 PM
PDT
Current temp
44°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
29 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 8m 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.
Frequently Asked Questions
The drive from Altadena, CA to San Francisco, CA covers 382.4 miles and takes about 7h 8m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Westside Freeway, I 5 Truck, Arthur H. Breed Junior Freeway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 191.2 miles from Altadena, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $87.89 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 27 significant decision points across 382.4 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 25.4 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 26.5 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 84.9 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here.
The route from Altadena, CA to San Francisco, CA does not surface many named destination signs beyond the main corridor.
