Origin
Fontana, CA
Night in Fontana on Saturday
Local time
9:27 PM
PDT
Current temp
55°F
Unavailable
Live forecast
Trip from Fontana, CA to Rancho Santa Margarita, CA
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 26, 2026 · Editorial standards
Drive Time
1h 5m
Distance
52.4 mi
84 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$12
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
1h 0m
★
6 AM
1h 6m
8 AM
1h 16m
10 AM
1h 9m
12 PM
1h 8m
3 PM
1h 10m
5 PM
1h 16m
8 PM
1h 3m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Fontana, CA
Wikimedia Commons
Rancho Santa Margarita, CA
Wikimedia Commons
Trip Overview
Fontana, CA to Rancho Santa Margarita, CA is 52.4 miles and takes about 1h 5m via Foothill Transportation Corridor and CA 91, with a fuel budget near $12 and enough daylight to finish in a day. This trip stays within the Pacific Coast region of California, offering a straightforward connection between two Southern California locales. Expect a drive that is mostly highway but transitions to surface streets as you approach your destination. It's a relatively short hop, making it suitable for a quick commute or a spontaneous outing without requiring extensive planning.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Foothill Transportation Corridor | 14.5 mi | 16m |
| CA 91 | 9.1 mi | 10m |
| Corona Freeway | 5.7 mi | 6m |
| Eastern Transportation Corridor | 5.7 mi | 6m |
| San Bernardino Freeway | 5.4 mi | 6m |
| Ontario Freeway | 3.2 mi | 3m |
| Hamner Avenue | 2.6 mi | 4m |
| Sierra Avenue | 1.6 mi | 2m |
Longest stretch:
Foothill Transportation Corridor
— 14.5 mi, about 16m
Traffic on I-10
Hour-of-day weekday pattern from 11 FHWA count stations on your route.
Peak
7 PM
~5,427 veh/hr typical
Quietest
5 AM
~2,104 veh/hr
Peak-to-quiet ratio
2.6×
busier at peak than in the quiet hours
12a
6a
noon
6p
11p
Averaged across 7 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana, CA and Rancho Santa Margarita, CA.
1
Start on Merrill Avenue
205 ft
·
9 sec
·
Merrill Avenue
2
Turn left onto Sierra Avenue
1.6 mi
·
2 min
·
Sierra Avenue
Use the left lane.
3
Take the ramp
0.3 mi
·
45 sec
Toward I 10 West: Los Angeles
Use the right lane.
4
Merge onto I 10
5.4 mi
·
6 min
·
San Bernardino Freeway
Use the straight / slight right lanes.
5
Take the exit
0.3 mi
·
33 sec
Exit 58
Toward I 15 South, I 15 North: Barstow, San Diego
Use the straight / slight right lanes.
6
Keep slight left at fork
0.8 mi
·
1 min
Toward I 15 South: San Diego
Use the straight / slight right lanes.
7
Merge onto I 15
2.8 mi
·
3 min
·
Ontario Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 15
0.4 mi
·
27 sec
·
Ontario Freeway
Use the straight / slight left lanes.
9
Continue on I 15
2.4 mi
·
2 min
·
Corona Freeway
Use the straight / slight right lanes.
10
Take the exit
0.3 mi
·
48 sec
Exit 103
Toward Limonite Avenue
Use the straight / slight right lanes.
11
Turn right onto Limonite Avenue
0.5 mi
·
49 sec
·
Limonite Avenue
Use the right lane.
12
Turn left onto Hamner Avenue
2.6 mi
·
4 min
·
Hamner Avenue
Use the left lane.
13
Turn left onto 6th Street
354 ft
·
14 sec
·
6th Street
Use the left lane.
14
Take the ramp
0.3 mi
·
42 sec
Toward I 15 South: San Diego
15
Merge onto I 15
3.3 mi
·
3 min
·
Corona Freeway
Use the straight / slight right lanes.
16
Take the exit
0.6 mi
·
48 sec
Toward CA 91 West: Beach Cities
Use the slight right lane.
17
Continue on CA 91
9.1 mi
·
10 min
·
CA 91
Use the straight / slight right lanes.
18
Take the exit
1.2 mi
·
1 min
Exit 41B
Toward CA 241 South: Irvine
Use the slight right lane.
19
Continue on CA 241 Toll
5.7 mi
·
6 min
·
Eastern Transportation Corridor
Use the straight / slight right lanes.
20
Keep slight left at fork onto CA 241 Toll
15 mi
·
16 min
·
Foothill Transportation Corridor
Use the straight / slight right lanes.
21
Arrive at destination
CA 241 Toll
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
26 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 12 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 26.2 miles from Fontana, CA, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 165 decision points cluster between mile 0 and 30.9 — 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
|
Sierra Avenue
Turn left onto Sierra Avenue
Lane positioning matters here
Use the left lane.
8
7.4 mi into trip
|
~9m in
Take the exit toward I 15 South, I 15 North: Barstow, San Diego
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 58
Toward I 15 South, I 15 North: Barstow, San Die...
7
7.7 mi into trip
|
~10m in
Keep slight left at fork toward I 15 South: San Diego
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 15 South: San Diego
7
14.1 mi into trip
|
~18m in
Take the exit toward Limonite Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 103
Toward Limonite Avenue
7
30.9 mi into trip
|
~40m in
Take the exit toward CA 241 South: Irvine
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 41B
Toward CA 241 South: Irvine
Fuel & Cost
Regular Gas
$11.88 one way
$23.75 round trip
$5.76/gal
25.4 MPG avg
18 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.96 | $12.29 | $24.57 |
| premium | $6.09 | $12.57 | $25.14 |
| diesel | $5.40 | $11.15 | $22.29 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$12
Estimated CO2 emission: 18.3 kg one way. Prices: EIA weekly data, 2026-04-20.
Driving Electric?
About $6 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 15.7 | 0 | $5.50 | $2.52 |
| Efficient EV | 13.1 | 0 | $4.59 | $2.10 |
| EV Truck/SUV | 21 | 0 | $7.34 | $3.35 |
Gas CO2
18 kg
EV CO2
6 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
Rancho Santa Margarita, CA
Night in Rancho Santa Margarita on Saturday
Local time
9:27 PM
PDT
Current temp
75°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
20 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
1h 5m 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 a mixed highway and surface road experience, with 45% of the route on freeways. You'll encounter your longest continuous stretch of highway at 14.5 miles on the Foothill Transportation Corridor. Be prepared for the transition from higher-speed freeway driving to surface streets as you get closer to Rancho Santa Margarita, which will involve more frequent stops and lower speeds. The freeway sections offer a more consistent pace, while the surface road portions will require more attention to local traffic and signals.
45% highway, the rest on surface roads — varied driving throughout.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 14.5 mi on Foothill Transportation Corridor.
How Hard Is This Drive?
10/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Sierra Avenue.
Driving Effort
10/10
Demanding - stay alert through the decision-heavy sections
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 52.4 miles you will encounter 16 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 (Sierra Avenue): Lane positioning matters here; at 7.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 7.7 miles: Highway fork - watch signs carefully. Lane positioning matters here.
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.
On the drive from Fontana, CA to Rancho Santa Margarita, CA, road signs begin pointing toward San Diego along the way.
San Diego
7.4 mi in
|
~9m
About the Cities
Starting in Fontana, CA
Full guide →Founded 1913
Fontana is a city in San Bernardino County in Southern California.
Top landmarks
- • Bono's Restaurant and Deli
Arriving in Rancho Santa Margarita, CA
Full guide →Founded 2000
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 1h 5m. Total distance: 52.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 5m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (45%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 14.5 miles on Foothill Transportation Corridor. 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 Rancho Santa Margarita, 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 (Sierra Avenue): Lane positioning matters here; at 7.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 7.7 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Rancho Santa Margarita, 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, EIA for fuel prices, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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