Drive Time
6h 19m
Distance
382.3 mi
615 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$52
one way
Photo: Stephen Leonardi
The drive from Diamond Bar, CA to Fremont, CA covers 382.3 miles and takes about 6h 19m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on North Diamond Bar Boulevard, CA 57 North, Orange Freeway for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $51.93 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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
191.2 miles from Diamond Bar, CA
A natural place for your longest stop of the day , about 3h 9m into the drive .
Expect a 6h 19m drive with frequent turns across 382.3 miles of local and secondary roads.
| Road | Distance | Duration |
|---|---|---|
| North Diamond Bar Boulevard | Unavailable | Refreshing |
| CA 57 North | Unavailable | Refreshing |
| Orange Freeway | Unavailable | Refreshing |
| I 210 West | Unavailable | Refreshing |
| Foothill Freeway | Unavailable | Refreshing |
| Golden State Freeway | Unavailable | Refreshing |
| Westside Freeway | Unavailable | Refreshing |
| CA 152 West | Unavailable | Refreshing |
Per-road distance and duration are being refreshed from OSRM for this route.
Step-by-step road directions between Diamond Bar, CA and Fremont, CA.
Start on the route
Turn left
Turn right onto North Diamond Bar Boulevard
Take the ramp left toward CA 57 North
Continue on Orange Freeway
Keep slight left to continue on I 210 West: Pasadena
Merge slight left onto Foothill Freeway
Keep slight right to continue on Foothill Freeway
Keep slight right
Merge slight right
Keep slight left
Keep slight left to continue on Golden State Freeway
Keep slight right to continue on Westside Freeway
Take the exit slight right toward CA 152 West: Gilroy, Hollister, San Jose
Continue straight
Keep slight right
Take the exit slight right toward US 101 North: San Jose
Merge slight left onto South Valley Freeway
Keep slight left
Take the exit slight right toward I 880 North: Oakland
Merge slight left onto Nimitz Freeway
Keep slight right to continue on Nimitz Freeway
Take the exit slight right toward Mowry Avenue, Central Fremont
Turn right onto Mowry Avenue
Arrive at your destination
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 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 23m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 191.2 miles or 3h 9m 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 20m
Traffic, exits, and arrival timing usually matter more near Fremont, CA than in the middle of the route.
Open the route before leaving Diamond Bar, 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.
Day 1
Settle into the route from Diamond Bar, CA
This is one driving day of about 382.3 miles and 6h 19m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 191.2 mi from Diamond Bar, CA · 3h 9m into the drive
Mid-route town
Meal stop
191 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.
A short stop after about 84 miles helps settle the day before fatigue starts building.
The midpoint is around 191.2 miles from Diamond Bar, CA, which is a good place for a longer meal and fuel stop.
The final approach into Fremont, 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 Fremont, CA.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$51.93 one way
$103.85 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $3.85 | $57.95 | $115.89 |
| premium | $4.15 | $62.46 | $124.92 |
| diesel | $3.75 | $56.44 | $112.88 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$52
Meals
$25–$50
Total
$77–$102
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 133.8 kg one way.
Driving Electric?
About $40 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 114.7 | 1 | $40.14 | $18.35 |
| Efficient EV | 95.6 | 1 | $33.45 | $15.29 |
| EV Truck/SUV | 152.9 | 1 | $53.52 | $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. If you're planning ahead, check the forecast closer to your travel date.
Origin
Morning in Diamond Bar on Saturday
Local time
7:26 AM
PDT
Current temp
53°F
Forecast unavailable right now
Destination
Morning in Fremont on Saturday
Local time
7:26 AM
PDT
Current temp
48°F
Forecast unavailable right now
Along the Route
53°F
Bakersfield, CA
191 mi in
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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