Origin
Diamond, CA
Late night in Diamond on Saturday
Local time
12:25 AM
PDT
Current temp
--
Unavailable
Trip from Diamond, CA to Brentwood, CA
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
22m
Distance
16.1 mi
26 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 20m
★
6 AM
0h 22m
8 AM
0h 26m
10 AM
0h 23m
12 PM
0h 23m
3 PM
0h 24m
5 PM
0h 26m
8 PM
0h 21m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Brentwood, CA
Wikimedia Commons
Trip Overview
The drive from Diamond, CA to Brentwood, CA covers 16.1 miles and takes about 22m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on CA 4, Balfour Road, Brentwood Boulevard for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 11.6 miles on CA 4. At current regular gas prices, budget about $3.70 one way before food or hotel costs.
About the Cities
Arriving in Brentwood, CA
Full guide →Brentwood is an affluent, suburban city in eastern Contra Costa County, California with a popular downtown for visitors coming from the Sacramento Valley to the county. It serves as one of the eastern gateways to the East Bay, along with Livermore. Many in the city are commuters.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 22m. Total distance: 16.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
22m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (72%). Some complex stretches to watch for.
Drive Character
This is a 22m highway drive covering 16.1 miles, with most of the trip on CA 4 and Balfour Road. The longest continuous stretch is about 11.6 miles on CA 4.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 11 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
CA 4 is the longest continuous segment at about 11.6 miles.
Elevation Profile
Mostly flat terrain
147 ft
44 ft
Total Climb
103 ft
Total Descent
16 ft
Highest Point
147 ft
~11.5 mi in
Elevation Range
103 ft
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on CA 4 and Balfour Road. You will hit about 8 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near West 17th Street.
Driving Effort
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 16.1 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (West 17th Street): Navigation decision point; at 0.6 miles: Lane positioning matters here; at 1.2 miles (CA 4): Merge point - match speed before joining. Lane positioning matters here.
Critical Maneuvers
5 of 8 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
0 mi into trip
|
~0m in
|
West 17th Street
Turn right onto West 17th Street
Navigation decision point
7
0.6 mi into trip
|
~1m in
Turn left toward CA 4 East: Stockton
Lane positioning matters here
Use the left lane.
Toward CA 4 East: Stockton
5
1.2 mi into trip
|
~2m in
|
CA 4
Merge onto CA 4
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
7.6 mi into trip
|
~9m in
|
CA 4
Keep slight left at fork onto CA 4
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
7
12.8 mi into trip
|
~15m in
Take the exit toward Balfour Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 35
Toward Balfour Road
Main Roads
| Road | Distance | Duration |
|---|---|---|
| CA 4 | 11.6 mi | 13m |
| Balfour Road | 2.4 mi | 4m |
| Brentwood Boulevard | 0.5 mi | <1m |
| Railroad Avenue | 0.3 mi | <1m |
| Civic Avenue | 0.2 mi | <1m |
| West 17th Street | <0.1 mi | <1m |
| Dimaggio Avenue | <0.1 mi | <1m |
Longest stretch:
CA 4
— 11.6 mi, about 13m
Turn-by-Turn Driving Directions
Step-by-step road directions between Diamond, CA and Brentwood, CA.
1
Start on Dimaggio Avenue
97 ft
·
6 sec
·
Dimaggio Avenue
2
Turn right onto West 17th Street
260 ft
·
11 sec
·
West 17th Street
3
Continue on Civic Avenue
0.2 mi
·
37 sec
·
Civic Avenue
4
Turn right onto Railroad Avenue
0.3 mi
·
41 sec
·
Railroad Avenue
5
Turn left
0.6 mi
·
45 sec
Toward CA 4 East: Stockton
Use the left lane.
6
Merge onto CA 4
6.4 mi
·
7 min
·
CA 4
Use the straight / slight right lanes.
7
Keep slight left at fork onto CA 4
5.2 mi
·
6 min
·
CA 4
Use the straight / slight right lanes.
8
Take the exit
0.3 mi
·
41 sec
Exit 35
Toward Balfour Road
Use the slight right lane.
9
Turn left onto Balfour Road
2.4 mi
·
4 min
·
Balfour Road
Use the left lane.
10
Turn sharp left onto Brentwood Boulevard
0.5 mi
·
50 sec
·
Brentwood Boulevard
11
Arrive at destination
Brentwood Boulevard
Fuel & Cost
Regular Gas
$3.70 one way
$7.40 round trip
$5.84/gal
25.4 MPG avg
6 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $6.02 | $3.81 | $7.63 |
| premium | $6.18 | $3.92 | $7.83 |
| diesel | $5.61 | $3.55 | $7.11 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 5.6 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 4.8 | 0 | $1.69 | $0.77 |
| Efficient EV | 4 | 0 | $1.41 | $0.64 |
| EV Truck/SUV | 6.4 | 0 | $2.25 | $1.03 |
Gas CO2
6 kg
EV CO2
2 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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
Brentwood, CA
Late night in Brentwood on Saturday
Local time
12:25 AM
PDT
Current temp
--
Unavailable
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Road read
22m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Diamond, CA to Brentwood, CA covers 16.1 miles and takes about 22m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are CA 4, Balfour Road, Brentwood Boulevard. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 8 miles from Diamond, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $3.70 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This drive requires moderate attention. Across 16.1 miles you will encounter 8 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: near the start (West 17th Street): Navigation decision point; at 0.6 miles: Lane positioning matters here; at 1.2 miles (CA 4): Merge point - match speed before joining. Lane positioning matters here.
The route from Diamond, CA to Brentwood, CA does not surface many named destination signs beyond the main corridor.
Mostly flat terrain. The route ranges from 44 ft to 147 ft elevation with about 103 ft of total climbing.
Yes. Nearby national parks include Port Chicago Naval Magazine National Memorial and Rosie the Riveter WWII Home Front National Historical Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, and NPS for national parks. See our methodology for refresh cadence and limitations.
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