Origin
San Diego, CA
Late night in San Diego on Friday
Local time
1:03 AM
PDT
Current temp
56°F
Unavailable
Live forecast
Trip from San Diego, CA to Byron, CA
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
8h 38m
Distance
457.1 mi
736 km
Drive Score
7/10
Good drive
Same Day?
2-day trip
Fuel Cost
$105
one way
EV Charging
Unknown
Best Time to Leave
4 AM
8h 31m
★
6 AM
8h 38m
8 AM
8h 54m
10 AM
8h 44m
12 PM
8h 42m
3 PM
8h 45m
5 PM
8h 53m
8 PM
8h 34m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
San Diego, CA
Wikimedia Commons
Byron, CA
Tori Pezzulla❤️
Trip Overview
This 457.1-mile drive from San Diego to Byron, California, is a substantial undertaking, typically requiring 8 hours and 38 minutes of pure driving time. Given its length and the estimated $105 fuel cost, splitting this trip over two days is highly recommended. You'll primarily be on major freeways like the San Diego Freeway and Golden State Freeway, making it a highway-focused journey. With only two planned stops, you'll experience long stretches of consistent travel. This route connects two points within the Pacific Coast region, offering a direct path through California.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
228.6 miles from San Diego, CA
A natural place for your longest stop of the day , about 4h 26m into the drive .
Drive Character
Expect a predominantly highway-focused drive, with 97% of the route utilizing major freeways. This means you'll be on the Westside Freeway, San Diego Freeway, and Golden State Freeway for the vast majority of your travel. The longest uninterrupted stretch you'll encounter is 225.6 miles on the Westside Freeway, so be prepared for extended periods of consistent speed. While not characterized by winding backroads, this route offers a straightforward, efficient passage through the state.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 37 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Westside Freeway is the longest continuous segment at about 225.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Westside Freeway and San Diego Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 76.1 miles in near I 5 Truck.
Driving Effort
8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 30 significant decision points across 457.1 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: at 76.1 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 83.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 84 miles (Jamboree Road): Lane positioning matters here.
Critical Maneuvers
5 of 30 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
76.1 mi into trip
|
~1h 29m in
|
I 5 Truck
Keep slight right at fork onto I 5 Truck toward Bake Parkway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Bake Parkway
7
83.7 mi into trip
|
~1h 38m in
Take the exit toward Jamboree Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 100
Toward Jamboree Road
7
84 mi into trip
|
~1h 39m in
|
Jamboree Road
Turn right onto Jamboree Road
Lane positioning matters here
Use the left / right lanes.
9
144.7 mi into trip
|
~2h 52m in
|
I 5 Truck
Keep slight right at fork onto I 5 Truck toward I 5 Truck North, CA 14 Truck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 161A
Toward I 5 Truck North, CA 14 Truck
7
204.7 mi into trip
|
~4h in
|
I 5 / Westside Freeway
Keep slight right at fork onto I 5 / Westside Freeway toward I 5 North
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 5 North
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 San Diego, CA to Byron, CA, road signs begin pointing toward San Francisco along the way.
San Francisco
430.2 mi in
|
~8h 2m
|
via I 580
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Westside Freeway | 225.6 mi | 4h 1m |
| San Diego Freeway | 75.2 mi | 1h 27m |
| Golden State Freeway | 50 mi | 57m |
| I 5 Truck | 45.3 mi | 52m |
| Santa Ana Freeway | 30.4 mi | 35m |
| William Elton Brown Freeway | 13.9 mi | 14m |
| Byron Highway | 5 mi | 7m |
| Mountain House Parkway | 3.5 mi | 6m |
Longest stretch:
Westside Freeway
— 225.6 mi, about 4h 1m
Turn-by-Turn Driving Directions
Step-by-step road directions between San Diego, CA and Byron, CA.
1
Start on Front Street
26 ft
·
6 sec
·
Front Street
2
Turn left onto West Broadway
290 ft
·
12 sec
·
West Broadway
3
Turn left onto 1st Avenue
0.6 mi
·
1 min
·
1st Avenue
Use the left lane.
4
Take the ramp
0.2 mi
·
24 sec
Toward I 5 North: Los Angeles
Use the left / straight lanes.
5
Merge onto I 5
13 mi
·
15 min
·
San Diego Freeway
Use the straight / slight right lanes.
6
Keep slight left at fork onto I 5
36 mi
·
43 min
·
San Diego Freeway
Use the straight / slight right lanes.
7
Keep slight right at fork onto I 5
18 mi
·
20 min
·
San Diego Freeway
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 5
7.4 mi
·
8 min
·
San Diego Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto I 5 Truck
1.6 mi
·
1 min
·
I 5 Truck
Toward Bake Parkway
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 5 Truck
6.0 mi
·
6 min
·
I 5 Truck
Use the slight right lane.
11
Take the exit
0.2 mi
·
16 sec
Exit 100
Toward Jamboree Road
Use the slight right lane.
12
Continue on this road
527 ft
·
11 sec
·
this road
13
Turn right onto Jamboree Road
0.1 mi
·
18 sec
·
Jamboree Road
Use the left / right lanes.
14
Turn left onto El Camino Real
2.2 mi
·
4 min
·
El Camino Real
Use the left lane.
15
Turn left onto Newport Avenue
357 ft
·
13 sec
·
Newport Avenue
Use the left lane.
16
Take the ramp
0.2 mi
·
16 sec
Toward I 5 North: Los Angeles
17
Merge onto I 5
1.3 mi
·
1 min
·
Santa Ana Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto I 5
1.7 mi
·
1 min
·
Santa Ana Freeway
19
Keep slight right at fork onto I 5
9.4 mi
·
10 min
·
Santa Ana Freeway
Use the slight right lane.
20
Keep slight right at fork onto I 5
18 mi
·
20 min
·
Santa Ana Freeway
Use the straight / slight right lanes.
21
Keep slight right at fork onto I 5
25 mi
·
29 min
·
Golden State Freeway
Use the straight / slight right lanes.
22
Keep slight left at fork onto I 5
2.2 mi
·
2 min
·
Golden State Freeway
Use the straight / slight right lanes.
23
Keep slight right at fork onto I 5 Truck
1.5 mi
·
1 min
·
I 5 Truck
Exit 161A
Toward I 5 Truck North, CA 14 Truck
Use the straight / slight right lanes.
24
Keep slight left at fork onto I 5 Truck
36 mi
·
41 min
·
I 5 Truck
Use the straight / slight right lanes.
25
Keep slight left at fork onto I 5
22 mi
·
25 min
·
Golden State Freeway
Use the straight / slight right lanes.
26
Keep slight right at fork onto I 5
226 mi
·
4 hr 1 min
·
Westside Freeway
Toward I 5 North
Use the straight / slight right lanes.
27
Keep slight left at fork onto I 580
14 mi
·
14 min
·
William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
28
Take the exit
0.2 mi
·
22 sec
29
Keep slight right at fork
288 ft
·
7 sec
Toward Patterson Pass Road
30
Turn straight onto Mountain House Parkway
0.7 mi
·
1 min
·
Mountain House Parkway
Use the straight lane.
31
Turn right onto International Parkway
0.8 mi
·
1 min
·
International Parkway
32
Continue on Mountain House Parkway
2.8 mi
·
5 min
·
Mountain House Parkway
Use the straight lane.
33
At end of road, turn left onto J4
1.8 mi
·
2 min
·
Byron Road
Use the slight left lane.
34
Continue on J4
1.5 mi
·
2 min
·
Byron-Bethany Road
35
Continue on J4
5.0 mi
·
7 min
·
Byron Highway
36
Turn right
17 ft
·
1 sec
37
Arrive at destination
Trip Plan
To make the most of this 8-hour, 38-minute drive, consider departing early in the morning to avoid potential traffic, especially as you leave the San Diego area. Splitting the journey over two days is advisable; aim to cover roughly half the distance on day one to allow for rest. Keep an eye on your fuel levels, as the longest stretch without a break is over 225 miles. Budgeting around $105 for fuel is a good estimate for this 457.1-mile trip, and planning your two stops strategically will be key to a comfortable experience.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 228.6 miles from San Diego, CA, or about 4h 26m into the drive.
The longest continuous stretch on this route runs about 225.6 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 101 miles or 2h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 228.6 miles or 4h 26m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 228.6 miles or 4h 26m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 7h 26m
Traffic, exits, and arrival timing usually matter more near Byron, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving San Diego, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from San Diego, CA
Aim for roughly 229 miles and 4.3 hours of wheel time on this day.
Day 2
Finish the approach into Byron, CA
Aim for roughly 229 miles and 4.3 hours of wheel time on this day.
Your first comfortable stop window is around 101 miles from San Diego, CA.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 225.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 228.6 mi from San Diego, CA · 4h 26m into the drive
Mid-route town
Overnight candidate
229 mi into the route
Best for: Hotel check-in, dinner, and a fresh start
This lines up well with a realistic day-end stop if you are breaking the drive into stages.
Find hotels in Los Angeles, CAOvernight Options
Night 1
229 mi · about 4.3h in
A practical overnight split lands near Los Angeles, CA after about 229 miles or 4.3 hours of driving.
Find hotelsPacing Suggestions
Fuel and coffee
A short stop after about 101 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 228.6 miles from San Diego, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Westside Freeway if your tank is already low. That segment runs about 225.6 miles.
Overnight split
Hotel stopFor a steadier pace, wrap day one after about 229 miles or 4.3 hours on the road.
Arriving in Byron, CA
The final approach into Byron, CA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Byron, CA.
On a multi-day trip, keep the last day a little lighter so you reach Byron, CA with some flexibility left in the schedule.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$105.06 one way
$210.12 round trip
$5.84/gal
25.4 MPG avg
160 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $6.02 | $108.26 | $216.53 |
| premium | $6.18 | $111.16 | $222.32 |
| diesel | $5.61 | $100.92 | $201.84 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$105
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$235–$345
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 159.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $48 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 137.1 | 1 | $48.00 | $21.94 |
| Efficient EV | 114.3 | 1 | $40.00 | $18.28 |
| EV Truck/SUV | 182.8 | 2 | $63.99 | $29.25 |
Gas CO2
160 kg
EV CO2
53 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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
Byron, CA
Late night in Byron on Friday
Local time
1:03 AM
PDT
Current temp
--
Unavailable
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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
8h 38m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from San Diego, CA to Byron, CA covers 457.1 miles and takes about 8h 38m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Westside Freeway, San Diego Freeway, Golden State Freeway. Most of the drive stays on highways, so watch for ramps and exits.
Consider an overnight stop or starting very early.
Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 229 miles on day one.
The midpoint is about 228.6 miles from San Diego, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $105.06 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 30 significant decision points across 457.1 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.
The main spots that need attention: at 76.1 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 83.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 84 miles (Jamboree Road): Lane positioning matters here.
On the drive from San Diego, CA to Byron, CA, road signs begin pointing toward San Francisco along the way.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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