Origin
Larkspur, CA
Morning in Larkspur on Monday
Local time
10:29 AM
PDT
Current temp
46°F
Unavailable
Live forecast
Trip from Larkspur, CA to San Bernardino, CA
Drive Time
7h 40m
Distance
451.2 mi
726 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$104
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
7h 31m
★
6 AM
7h 40m
8 AM
8h 0m
10 AM
7h 47m
12 PM
7h 45m
3 PM
7h 48m
5 PM
7h 59m
8 PM
7h 35m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Larkspur, CA
Wikimedia Commons
Trip Overview
The drive from Larkspur, CA to San Bernardino, CA covers 451.2 miles and takes about 7h 40m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Magnolia Avenue, Bon Air Road, Sir Francis Drake Boulevard for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $104.49 one way before food or hotel costs.
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
225.6 miles from Larkspur, CA
A natural place for your longest stop of the day , about 3h 50m into the drive .
Drive Character
Expect a 7h 40m drive with frequent turns across 451.2 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 32 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Magnolia Avenue is one of the defining roads on this drive.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way.
Route Complexity
4/10
Easy - simple navigation with a manageable amount of wheel time
The route itself is not hard, but at 7h 40m, endurance matters. Plan breaks every 2-3 hours. The 0 decision points are all manageable with basic attention.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Larkspur, CA to San Bernardino, CA is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Magnolia Avenue | Unavailable | Refreshing |
| Bon Air Road | Unavailable | Refreshing |
| Sir Francis Drake Boulevard | Unavailable | Refreshing |
| I 580 East | Unavailable | Refreshing |
| John T | Unavailable | Refreshing |
| Eastshore Freeway | Unavailable | Refreshing |
| Highway 80 | Unavailable | Refreshing |
| MacArthur Freeway | Unavailable | Refreshing |
Per-road distance and duration are being refreshed from OSRM for this route.
Longest stretch:
Magnolia Avenue
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Larkspur, CA and San Bernardino, CA.
1
Start on King Street
141 ft
·
6 sec
·
King Street
2
Turn right onto Magnolia Avenue
0.7 mi
·
2 min
·
Magnolia Avenue
3
Turn right onto Bon Air Road
0.7 mi
·
2 min
·
Bon Air Road
4
Turn right onto Sir Francis Drake Boulevard
0.9 mi
·
1 min
·
Sir Francis Drake Boulevard
5
Continue on Sir Francis Drake Boulevard
1.6 mi
·
3 min
·
Sir Francis Drake Boulevard
6
Take the ramp straight toward I 580 East
0.3 mi
·
27 sec
·
I 580 East
7
Merge slight left onto John T. Knox Freeway
12 mi
·
14 min
·
John T. Knox Freeway
8
Merge slight left onto Eastshore Freeway
3.8 mi
·
4 min
·
Eastshore Freeway
9
Keep slight left to continue on Interstate Highway 80
0.3 mi
·
21 sec
·
Interstate Highway 80
10
Keep slight left to continue on MacArthur Freeway
16 mi
·
18 min
·
MacArthur Freeway
11
Merge slight left onto Arthur H. Breed Junior Freeway
12 mi
·
13 min
·
Arthur H. Breed Junior Freeway
12
Keep slight right to continue on Arthur H. Breed Junior Freeway
18 mi
·
20 min
·
Arthur H. Breed Junior Freeway
13
Keep slight right to continue on William Elton Brown Freeway
11 mi
·
12 min
·
William Elton Brown Freeway
14
Keep slight left to continue on William Elton Brown Freeway
5.9 mi
·
6 min
·
William Elton Brown Freeway
15
Merge slight left onto Westside Freeway
224 mi
·
4 hr
·
Westside Freeway
16
Keep slight right
58 mi
·
1 hr 6 min
17
Keep slight left to continue on Golden State Freeway
2.0 mi
·
2 min
·
Golden State Freeway
18
Take the exit slight right toward I 210 East: Pasadena
0.3 mi
·
18 sec
·
I 210 East: Pasadena
19
Continue on Foothill Freeway
24 mi
·
28 min
·
Foothill Freeway
20
Keep slight right to continue on Foothill Freeway
19 mi
·
22 min
·
Foothill Freeway
21
Keep slight right to continue on Foothill Freeway
2.9 mi
·
3 min
·
Foothill Freeway
22
Keep slight right to continue on Foothill Freeway
1.4 mi
·
1 min
·
Foothill Freeway
23
Keep slight right to continue on Foothill Freeway
1.2 mi
·
1 min
·
Foothill Freeway
24
Keep slight right to continue on Foothill Freeway
1.8 mi
·
2 min
·
Foothill Freeway
25
Keep slight right to continue on Foothill Freeway
23 mi
·
26 min
·
Foothill Freeway
26
Take the exit slight right toward I 215: Barstow, Riverside
0.2 mi
·
29 sec
·
I 215: Barstow, Riverside
27
Keep slight right to continue on I 215 South: Riverside
0.6 mi
·
1 min
·
I 215 South: Riverside
28
Merge slight left onto Barstow Freeway
0.2 mi
·
14 sec
·
Barstow Freeway
29
Continue on San Bernardino Freeway
1.8 mi
·
2 min
·
San Bernardino Freeway
30
Take the exit slight right toward CA 66 West: 5th Street, Civic Center
0.4 mi
·
53 sec
·
CA 66 West: 5th Street, Civic Center
31
Turn left onto West 5th Street
0.8 mi
·
1 min
·
West 5th Street
32
Arrive at your destination
Trip Plan
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 225.6 miles from Larkspur, CA, or about 3h 50m into the drive.
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 99 miles or 1h 41m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 225.6 miles or 3h 50m 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 39m
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 Larkspur, 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 Larkspur, CA
This is one driving day of about 451.2 miles and 7h 40m.
Your first comfortable stop window is around 99 miles from Larkspur, 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.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 225.6 mi from Larkspur, CA · 3h 50m into the drive
Mid-route town
Meal stop
226 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 99 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 225.6 miles from Larkspur, CA, which is a good place for a longer meal and fuel stop.
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.
Fuel & Cost
Regular Gas
$104.49 one way
$208.97 round trip
$5.88/gal
25.4 MPG avg
158 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $6.07 | $107.76 | $215.51 |
| premium | $6.24 | $110.90 | $221.80 |
| diesel | $5.64 | $100.24 | $200.48 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$104
Meals
$25–$50
Total
$129–$154
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 157.9 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $47 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 135.4 | 1 | $47.38 | $21.66 |
| Efficient EV | 112.8 | 1 | $39.48 | $18.05 |
| EV Truck/SUV | 180.5 | 2 | $63.17 | $28.88 |
Gas CO2
158 kg
EV CO2
53 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.
Destination
San Bernardino, CA
Morning in San Bernardino on Monday
Local time
10:29 AM
PDT
Current temp
52°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
6 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
7h 40m 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 Larkspur, CA to San Bernardino, CA covers 451.2 miles and takes about 7h 40m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Magnolia Avenue, Bon Air Road, Sir Francis Drake Boulevard. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 225.6 miles from Larkspur, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $104.49 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.
The route itself is not hard, but at 7h 40m, endurance matters. Plan breaks every 2-3 hours. The 0 decision points are all manageable with basic attention.
This route does not have any notably tricky sections. Most of the drive from Larkspur, CA to San Bernardino, CA is straightforward, with well-signed roads and simple exits.
The route from Larkspur, CA to San Bernardino, CA does not surface many named destination signs beyond the main corridor.
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