Fontana to San Diego is 108.4 miles and takes about 2 hours 7 minutes via I 215 Truck and Escondido Freeway, with a fuel budget near $25 and enough daylight to finish in a day. This drive stays within California, moving from the Pacific Coast region toward the coast again. It's a straightforward, highway-focused trip that's perfect for a single day. You'll find it a practical route for getting from point A to point B without much fuss. Consider this an efficient way to connect these two Southern California locations.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
54.2 miles from Fontana, CA
A natural place for your longest stop of the day
, about 1h 5m into the drive
.
Main Roads
Road
Distance
Duration
I 215 Truck
36.7 mi
41m
Avocado Highway
21.9 mi
23m
Escondido Freeway
19.2 mi
22m
Cabrillo Freeway
8.2 mi
9m
Pomona Freeway
5.1 mi
5m
Sierra Avenue
5 mi
7m
Tony Gwynn Memorial Freeway
4.5 mi
5m
Cabrillo Parkway
2.3 mi
2m
Longest stretch:
I 215 Truck
— 36.7 mi, about 41m
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana, CA and San Diego, CA.
1
Start on Merrill Avenue
205 ft·9 sec·Merrill Avenue
2
Turn left onto Sierra Avenue
5.0 mi·7 min·Sierra Avenue
Use the left lane.
3
Turn right onto Armstrong Road
0.5 mi·55 sec·Armstrong Road
4
Continue on Valley Way
0.5 mi·44 sec·Valley Way
5
Turn sharp left onto CA 60 Business
0.1 mi·26 sec·Mission Boulevard
6
Continue on CA 60 Business
0.1 mi·26 sec·Mission Boulevard
Use the left lane.
7
Turn sharp right onto Valley Way
204 ft·3 sec·Valley Way
Use the right lane.
8
Take the ramp
0.2 mi·30 sec
Toward CA 60 East: Riverside
9
Merge onto CA 60
5.1 mi·5 min·Pomona Freeway
Use the straight / slight right lanes.
10
Continue on I 215; CA 60
3.9 mi·4 min·Escondido Freeway
Use the straight / slight right lanes.
11
Keep slight right at fork onto I 215 Truck; CA 60 Truck
0.5 mi·33 sec·I 215 Truck; CA 60 Truck
Toward I 215, CA 60 TruckUse the straight / slight right lanes.
12
Keep slight right at fork onto I 215 Truck
36 mi·41 min·I 215 Truck
Use the slight left / slight right lanes.
13
Continue on I 15
22 mi·23 min·Avocado Highway
Use the straight / slight right lanes.
14
Continue on I 15
3.4 mi·3 min·Escondido Freeway
Use the straight / slight right lanes.
15
Keep slight right at fork onto I 15
8.7 mi·10 min·Escondido Freeway
Use the slight right lane.
16
Continue on I 15
4.5 mi·5 min·Tony Gwynn Memorial Freeway
Use the straight / slight right lanes.
17
Continue on I 15
3.1 mi·3 min·Escondido Freeway
Use the straight / slight right lanes.
18
Continue on I 15
2.2 mi·2 min·Semper Fi Highway
Use the straight / slight right lanes.
19
Take the exit
0.7 mi·51 sec
Exit 12Toward CA 163 SouthUse the slight right lane.
20
Continue on CA 163
8.2 mi·9 min·Cabrillo Freeway
Toward CA 163Use the straight / slight right lanes.
21
Continue on CA 163
1.5 mi·1 min·Cabrillo Parkway
22
Continue on CA 163
0.8 mi·1 min·Cabrillo Parkway
Use the straight / slight right lanes.
23
Continue on CA 163
0.3 mi·41 sec·10th Avenue
Use the straight / left lanes.
24
Turn right onto Broadway
0.5 mi·1 min·Broadway
25
Turn left onto Front Street
26 ft·0 sec·Front Street
Use the left lane.
26
Arrive at destination
Front Street
Trip Plan
Given the relatively short duration of just over two hours, this trip is easily completed in a single day, offering flexibility in your departure time. You won't need to plan for overnight stays, and the fuel cost is estimated at a manageable $25. Since there are no specific stops noted in the data, you can decide on breaks as needed, perhaps stopping for gas or a quick bite. A good tip for this route is to check real-time traffic conditions before you leave Fontana, as Southern California freeways can experience significant delays, especially during peak hours.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 54.2 miles from Fontana, CA, or about 1h 5m into the drive.
The longest continuous stretch on this route runs about 36.7 miles.
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 24 miles or 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 54.2 miles or 1h 5m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 44m
Traffic, exits, and arrival timing usually matter more near San Diego, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Fontana, 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 Fontana, CA
This is one driving day of about 108.4 miles and 2h 7m.
Your first comfortable stop window is around 24 miles from Fontana, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 215 Truck for about 36.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 0 and 96.3 — 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
6.3 mi into trip|~10m in|Valley Way
Turn sharp right onto Valley Way
Sharp turn - reduce speed on approach. Lane positioning matters here
Use the right lane.
8
15.6 mi into trip|~21m in|I 215 Truck; CA 60 Truck
Keep slight right at fork onto I 215 Truck; CA 60 Truck toward I 215, CA 60 Truck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 215, CA 60 Truck
6
16.1 mi into trip|~22m in|I 215 Truck
Keep slight right at fork onto I 215 Truck
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
7
96.3 mi into trip|~1h 52m in
Take the exit toward CA 163 South
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 12
Toward CA 163 South
Fuel & Cost
Regular Gas
$24.91 one way
$49.83 round trip
$5.84/gal25.4 MPG avg38 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$25.67
$51.35
premium
$6.18
$26.36
$52.72
diesel
$5.61
$23.93
$47.87
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$25
Meals
$25–$50
Total
$50–$75
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
32.5
0
$11.38
$5.20
Efficient EV
27.1
0
$9.49
$4.34
EV Truck/SUV
43.4
0
$15.18
$6.94
Gas CO2
38 kg
EV CO2
13 kg (66% 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.
Forecast as of Apr 18, 2026
Origin
Fontana, CA
Late night
in Fontana on Tuesday
Local time
5:15 AM
PDT
Current temp
69°F
Unavailable
Live forecast
Destination
San Diego, CA
Late night
in San Diego on Tuesday
Local time
5:15 AM
PDT
Current temp
56°F
Partly Cloudy
0 mph0% chanceLive forecast
Freeze Warning
Freeze Warning issued April 18 at 1:22AM PDT until April 18 at 8:00AM PDT by NWS Eureka CA
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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
13 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 7m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Cabrillo National Monument
National Monument
In 1542, Juan Rodriguez Cabrillo climbed out of his boat and onto shore, becoming the first European to set foot on what is now the West Coast of the United States. Cabrillo National Monument not only...
5 mi from route
~13 min detour
$20
near mile 108.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is primarily a highway-focused drive, with about 70% of the journey on major freeways. You can expect stretches of relatively fast travel, including a longest uninterrupted stretch of 36.7 miles on I 215 Truck. The "Avocado Highway" and "Escondido Freeway" also contribute to the predominantly highway feel. While not an overly technical or winding road, it offers a consistent driving experience for most of its length. You'll notice the landscape change gradually as you head south.
70% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 36.7 mi on I 215 Truck.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 215 Truck and Avocado Highway. 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 Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 108.4 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: near the start (Sierra Avenue): Lane positioning matters here; at 6.3 miles (Valley Way): Sharp turn - reduce speed on approach. Lane positioning matters here; at 15.6 miles (I 215 Truck; CA 60 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
From balmy beaches with a laid-back attitude to a gleaming modern image, San Diego offers much for the tourist to enjoy. Situated on the Southern California seacoast, San Diego is the second largest city in the state, with 1.4 million residents (2020), and has long attracted travelers for its ideal climate, miles of beaches, and location on the Mexican border right across from Tijuana.
But there's much more here than surfer culture and a quick hop across the border. A rich maritime and military heritage lives on in San Diego, which is home to the Pacific Fleet of the United States Navy. The city has also become known for its part in the wildlife conservation movement, owing to the presence of the world-renowned San Diego Zoo and Safari Park and the Scripps Institution of Oceanography. Natural scenery abounds from rocky tidepools and seaside cliffs to desert hills and canyons inland.
Top landmarks
•Balboa Park — historic park in San Diego, California
•Cabrillo National Monument — National Monument of the United States and historic district
Doable as a same-day drive at 2h 7m. Total distance: 108.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 7m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (70%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 36.7 miles on I 215 Truck. The full list of main roads is in the Roads section above.
Yes — we found about 4 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 San Diego, CA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. There are 4 rest areas along the route for bathroom stops.
The main spots that need attention: near the start (Sierra Avenue): Lane positioning matters here; at 6.3 miles (Valley Way): Sharp turn - reduce speed on approach. Lane positioning matters here; at 15.6 miles (I 215 Truck; CA 60 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Cabrillo National Monument. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at San Diego, CA before heading back.
