Origin
Diamond Bar, CA
Morning in Diamond Bar on Sunday
Local time
10:28 AM
PDT
Current temp
53°F
Unavailable
Live forecast
Trip from Diamond Bar, CA to Santa Ana, CA
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
27m
Distance
21.7 mi
35 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 25m
★
6 AM
0h 27m
8 AM
0h 32m
10 AM
0h 29m
12 PM
0h 28m
3 PM
0h 29m
5 PM
0h 32m
8 PM
0h 26m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Diamond Bar, CA
Wikimedia Commons
Santa Ana, CA
Wikimedia Commons
Trip Overview
Diamond Bar, CA to Santa Ana, CA is 21.7 miles and takes about 27m via Orange Freeway, with a fuel budget near $5 and enough daylight to finish in a day. This is a straightforward, short hop within the Pacific Coast region of California. Expect a highway-focused drive that's ideal for a quick trip or a segment of a larger journey. Given its brief duration, this route offers flexibility, allowing you to depart at your convenience. It's a practical choice for connecting these two Southern California locales without a significant time commitment.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Orange Freeway | 17.1 mi | 19m |
| North Broadway | 1.3 mi | 2m |
| Pomona Freeway | 1.3 mi | 1m |
| North Main Street | 0.2 mi | <1m |
| Sunset Crossing Road | 0.1 mi | <1m |
| West 5th Street | 0.1 mi | <1m |
| West 1st Street | <0.1 mi | <1m |
Longest stretch:
Orange Freeway
— 17.1 mi, about 19m
Turn-by-Turn Driving Directions
Step-by-step road directions between Diamond Bar, CA and Santa Ana, CA.
1
Start on this road
39 ft
·
5 sec
·
this road
2
At end of road, turn right onto Sunset Crossing Road
0.1 mi
·
20 sec
·
Sunset Crossing Road
3
Take the ramp
0.2 mi
·
23 sec
Toward CA 57 South, CA 60 West: Santa Ana, Los Angeles
4
Merge onto CA 57
0.7 mi
·
47 sec
·
Orange Freeway
5
Merge onto CA 60; CA 57
1.3 mi
·
1 min
·
Pomona Freeway
Use the straight / slight right lanes.
6
Keep slight right at fork onto CA 57
405 ft
·
5 sec
·
Orange Freeway
Toward CA 57 South, CA 60 Alt West: Santa Ana, Brea Canyon Road
Use the slight right lane.
7
Keep slight left at fork onto CA 57
0.8 mi
·
56 sec
·
Orange Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto CA 57
1.5 mi
·
1 min
·
Orange Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto CA 57
14 mi
·
16 min
·
Orange Freeway
Use the straight / slight right lanes.
10
Keep slight left at fork
1.1 mi
·
1 min
Exit 1A
Toward I 5 South: Santa Ana
Use the straight lane.
11
Keep slight right at fork
0.3 mi
·
21 sec
Toward Main Street North, Broadway
Use the straight / slight right lanes.
12
Turn straight onto North Broadway
1.3 mi
·
2 min
·
North Broadway
Use the left lane.
13
Turn left onto West 5th Street
0.1 mi
·
16 sec
·
West 5th Street
Use the left lane.
14
Turn right onto North Main Street
0.2 mi
·
30 sec
·
North Main Street
Use the right lane.
15
Turn right onto West 1st Street
52 ft
·
1 sec
·
West 1st Street
Use the right lane.
16
Arrive at destination
West 1st Street
Heads-up: tricky spots
5 of 145 decision points cluster between mile 0 and 19.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0 mi into trip
|
~0m in
|
Sunset Crossing Road
At end of road, turn right onto Sunset Crossing Road
Complex interchange - multiple decisions in a short stretch
7
0.1 mi into trip
|
~0m in
Take the ramp toward CA 57 South, CA 60 West: Santa Ana, Los Angeles
Multiple destination signs - pick the right one
Toward CA 57 South, CA 60 West: Santa Ana, Los...
8
2.3 mi into trip
|
~3m in
|
CA 57 / Orange Freeway
Keep slight right at fork onto CA 57 / Orange Freeway toward CA 57 South, CA 60 Alt West: Santa Ana, Brea Canyon Road
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward CA 57 South, CA 60 Alt West: Santa Ana,...
8
18.7 mi into trip
|
~22m in
Keep slight left at fork toward I 5 South: Santa Ana
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight lane.
Exit 1A
Toward I 5 South: Santa Ana
8
19.8 mi into trip
|
~23m in
Keep slight right at fork toward Main Street North, Broadway
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward Main Street North, Broadway
Fuel & Cost
Regular Gas
$4.99 one way
$9.98 round trip
$5.84/gal
25.4 MPG avg
8 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $6.02 | $5.14 | $10.28 |
| premium | $6.18 | $5.28 | $10.55 |
| diesel | $5.61 | $4.79 | $9.58 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 7.6 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 63% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6.5 | 0 | $2.28 | $1.04 |
| Efficient EV | 5.4 | 0 | $1.90 | $0.87 |
| EV Truck/SUV | 8.7 | 0 | $3.04 | $1.39 |
Gas CO2
8 kg
EV CO2
3 kg (63% 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
Santa Ana, CA
Morning in Santa Ana on Sunday
Local time
10:28 AM
PDT
Current temp
72°F
Unavailable
Live forecast
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
19 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
27m 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.
What kind of drive is this?
This drive is predominantly highway-focused, with 85% of the journey on freeways. You'll spend the bulk of your time on the Orange Freeway, including an uninterrupted stretch of 17.1 miles. The route utilizes major arteries like the Pomona Freeway and North Broadway, ensuring relatively fast-paced travel. Expect a consistent driving experience that prioritizes directness over scenic detours. It's a straightforward path designed for efficient transit between these two points.
85% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 17.1 mi on Orange Freeway.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Orange Freeway and North Broadway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Sunset Crossing Road.
Driving Effort
10/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 14 decision points packed into just 21.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 27m.
Where does it get tricky?
The main spots that need attention: near the start (Sunset Crossing Road): Complex interchange - multiple decisions in a short stretch; at 0.1 miles: Multiple destination signs - pick the right one; at 2.3 miles (CA 57 / Orange Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Diamond Bar, CA and Santa Ana, CA, road signs point toward Main Street North and Broadway.
Main Street North
19.8 mi in
|
~23m
Broadway
19.8 mi in
|
~23m
About the Cities
Starting in Diamond Bar, CA
Full guide →Diamond Bar is a city in the San Gabriel Valley of Los Angeles in Southern California.
Arriving in Santa Ana, CA
Full guide →Santa Ana is a city in Orange County, Southern California and is the county seat of that county.
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 27m. Total distance: 21.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
27m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (85%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 17.1 miles on Orange Freeway. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Santa Ana, CA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: near the start (Sunset Crossing Road): Complex interchange - multiple decisions in a short stretch; at 0.1 miles: Multiple destination signs - pick the right one; at 2.3 miles (CA 57 / Orange Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Santa Ana, CA before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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