How far is Diamond, CA from Antioch, CA?
The driving distance from Diamond, CA to Antioch, CA is about 5.9 miles (9.5 km), with a travel time of about 00h 10m by car.
- The straight-line flight distance is about 4.9 miles (7.9 km).
- For a round trip, plan for roughly 00h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM PDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 10m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in Contra Costa County, California.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Diamond and Antioch.
Turn-by-Turn Driving Directions
Step-by-step road directions between Diamond and Antioch.
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1
Start on Dimaggio Avenue
30 m · 6 sec · Dimaggio Avenue
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2
Turn right onto West 17th Street
79 m · 11 sec · West 17th Street
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3
Continue on Civic Avenue
1239 ft · 38 sec · Civic Avenue
-
4
Turn right onto Railroad Avenue
1564 ft · 42 sec · Railroad Avenue
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5
Turn left onto CA 4 East: Stockton
3126 ft · 45 sec
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6
Merge slight left
3.9 mi · 5 min
-
7
Take the exit slight right toward Lone Tree Way, A Street
1201 ft · 29 sec
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8
Turn straight
34 m · 5 sec
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9
Turn left onto Lone Tree Way
92 m · 13 sec · Lone Tree Way
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10
Continue on A Street
2381 ft · 55 sec · A Street
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11
Turn right onto East 18th Street
21 m · 1 sec · East 18th Street
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12
Arrive at your destination
0 m · 1 sec · East 18th Street
Car Route Details
A richer read on the saved driving route between Diamond and Antioch.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
CA 4 East
Merge slight left
3.93 mi · 00h 05m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Diamond and Sunny near Antioch.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Diamond to Antioch?
The road trip is about 5.9 miles (9.5 km) and usually takes 00h 10m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Pittsburg is a useful midpoint, sitting about 2.9 miles from Diamond and 2.9 miles from Antioch.
How much longer is the road route than the straight-line distance?
The direct path is about 4.9 miles (7.9 km), while the road route adds roughly 1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM PDT. If you want a more comfortable same-day return, try to leave by 8:10 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.21 one way or $2.42 round trip. Estimated CO2 is about 1.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Diamond and Sunny near Antioch.
Stop Ideas Near Pittsburg
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Pittsburg.
Antioch–Pittsburg
Rio Vista, CA
Martinez station
Suisun–Fairfield station
Flight Path Map
This map shows the direct air route between Diamond and Antioch. Straight-line distance: 4.9 mi (7.89 km).
#1 Diamond
Diamond is a place in California, United States.
| Population | 0 |
| Coordinates | 38.0215900, -121.8932900 |
| Altitude | 13 |
| Country | United States |
#2 Antioch
The most populous city in Contra Costa County, California.
| Population | 111,605 |
| Coordinates | 38.0049200, -121.8057900 |
| Altitude | 13 |
| Country | United States |
End: East 18th Street (-121.80579, 38.004889)
Estimated Travel Time
Distance: 9 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 11m |
| 40 mph (64.37 km/h) | 00h 08m |
| 50 mph (80.47 km/h) | 00h 07m |
| 60 mph (96.56 km/h) | 00h 05m |
| 70 mph (112.65 km/h) | 00h 05m |
| 80 mph (129 km/h) | 00h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $1.21 | $2.42 |
| Mid-grade | $6.07 | $1.27 | $2.55 |
| Premium | $6.24 | $1.31 | $2.62 |
| Diesel | $7.57 | $1.59 | $3.18 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.