San Diego to Lewiston is 697.2 miles and takes about 13 hours via Westside Freeway, San Diego Freeway, and Golden State Freeway, with a fuel budget near $154 and enough daylight to finish in a day, though it's best split over two days. This long-haul drive covers the Pacific Coast region of California, transitioning from Southern California's coastal influence to the more inland, mountainous terrain as you head north. It's a significant drive, so planning your overnight stop is key to making it enjoyable rather than exhausting. Consider this route if you're looking for a straightforward path through much of the state.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
3 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
348.6 miles from San Diego, CA
A natural place for your longest stop of the day
, about 6h 34m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
425.9 mi
7h 39m
San Diego Freeway
75.2 mi
1h 27m
Golden State Freeway
50 mi
57m
I 5 Truck
45.3 mi
52m
Cascade Wonderland Highway
31.6 mi
34m
Santa Ana Freeway
30.4 mi
35m
Eureka Way
25 mi
29m
Trinity Dam Boulevard
4.6 mi
8m
Longest stretch:
Westside Freeway
— 425.9 mi, about 7h 39m
Traffic on I-5
Hour-of-day weekday pattern from 852 FHWA count stations on your route.
Peak
3 PM
~3,550 veh/hr typical
· worst 4,484
Quietest
2 AM
~446 veh/hr
Peak-to-quiet ratio
8×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 96 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 San Diego, CA and Lewiston, 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 AngelesUse 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 ParkwayUse 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 100Toward Jamboree RoadUse 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 161AToward I 5 Truck North, CA 14 TruckUse 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 NorthUse the straight / slight right lanes.
27
Keep slight right at fork onto I 5
26 mi·27 min·Westside Freeway
28
Keep left at fork onto I 5
54 mi·59 min·Westside Freeway
Use the straight / slight right lanes.
29
Keep slight left at fork onto I 5
121 mi·2 hr 10 min·Westside Freeway
Use the straight / slight right lanes.
30
Continue on I 5
32 mi·34 min·Cascade Wonderland Highway
31
Take the exit
0.2 mi·15 sec
Exit 678Toward CA 44: Eureka, Susanville
32
Keep slight left at fork
0.9 mi·1 min
Exit 678Toward CA 44 West: Eureka, Whiskeytown National Recreation Area
33
Merge onto CA 44
1.2 mi·1 min·CA 44
Use the straight / slight right lanes.
34
Turn right onto CA 44; CA 273; US 99 Hist
489 ft·17 sec·Pine Street
Use the straight / right lanes.
35
Turn left onto CA 44; CA 273; US 99 Hist
25 mi·29 min·Eureka Way
Use the left lane.
36
Continue on CA 299
2.6 mi·2 min·CA 299
37
Turn right onto CR 105
4.6 mi·8 min·Trinity Dam Boulevard
38
Turn left onto CR 212
0.5 mi·1 min·Lewiston Turnpike Road
39
Arrive at destination
CR 212
Trip Plan
Given the 13-hour duration, splitting this 697.2-mile drive over two days is highly recommended. Aim to depart early in the morning to maximize your daylight driving hours for the first leg. With three planned stops and a fuel cost around $154, factor in time for refueling and stretching, especially during the 425.9-mile longest stretch on the Westside Freeway. Consider an overnight stay around the halfway point to break up the drive and avoid fatigue. Keep an eye on your fuel gauge, as services can become less frequent in the more remote northern sections.
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 3 meaningful breaks for fuel, food, and rest.
The halfway point lands around 348.6 miles from San Diego, CA, or about 6h 34m into the drive.
The longest continuous stretch on this route runs about 425.9 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 153 miles or 3h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 348.6 miles or 6h 34m 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 348.6 miles or 6h 34m
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 11h 47m
Traffic, exits, and arrival timing usually matter more near Lewiston, 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 349 miles and 6.5 hours of wheel time on this day.
Day 2
Finish the approach into Lewiston, CA
Aim for roughly 349 miles and 6.5 hours of wheel time on this day.
Your first comfortable stop window is around 153 miles from San Diego, CA.
This route usually feels better as a 2-day drive than as one long push.
Plan about 3 real breaks rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 425.9 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 34
5 decision points cluster between mile 76.1 and 204.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
Fuel & Cost
Regular Gas
$168.67 one way
$337.35 round trip
$6.15/gal25.4 MPG avg244 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.34
$174.00
$348.00
premium
$6.50
$178.31
$356.62
diesel
$6.18
$169.61
$339.21
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$169
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$299–$409
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 243.9 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $73 in charging
· 2 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
209.2
2
$73.21
$33.47
Efficient EV
174.3
1
$61.01
$27.89
EV Truck/SUV
278.9
3
$97.61
$44.62
Gas CO2
244 kg
EV CO2
82 kg (66% less)
Plan for 2 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 Oct 19, 2026
Origin
San Diego, CA
Evening
in San Diego on Tuesday
Local time
8:29 PM
PDT
Current temp
66°F
Patchy Fog
0 mph0% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued October 19 at 1:23AM PDT until October 20 at 9:00AM PDT by NWS San Diego CA
Beach Hazards Statement
Beach Hazards Statement issued October 18 at 12:31PM PDT until October 20 at 9:00AM PDT by NWS Los Angeles/Oxnard CA
Destination
Lewiston, CA
Evening
in Lewiston on Tuesday
Local time
8:29 PM
PDT
Current temp
43°F
Partly Cloudy
WSW 1 mph1% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued October 19 at 1:23AM PDT until October 20 at 9:00AM PDT by NWS San Diego CA
Beach Hazards Statement
Beach Hazards Statement issued October 18 at 12:31PM PDT until October 20 at 9:00AM PDT by NWS Los Angeles/Oxnard 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.
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.
Temperature spread
23 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
13h 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Whiskeytown National Recreation Area
National Recreation Area
Whiskeytown Lake’s crystal-clear waters are iconic, but this 42,000-acre National Recreation Area offers much more. Explore waterfalls, hike rugged trails, uncover Gold Rush history, and witness the r...
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...
The Santa Monica Mountains offer easy access to surprisingly wild places. Experience the famous beaches of Malibu or explore more than 500 miles of trails. The park abounds with historical and cultura...
22 mi from route
~55 min detour
Free
near mile 144.2
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll spend about 90% of this 697.2-mile drive on major freeways, including the Westside Freeway, San Diego Freeway, and Golden State Freeway. The longest continuous stretch on these highways is 425.9 miles, so expect long periods of consistent cruising. This means you'll experience mostly high-speed driving with frequent exits and merges, especially as you navigate through urban and suburban areas early in the trip. The transition to more rural driving will occur gradually as you move further north.
90% highway — fuel and pacing are the main things to plan.
39 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 425.9 mi on Westside Freeway.
How Hard Is This Drive?
8/10
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 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 34 significant decision points across 697.2 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.
Elevation Profile
Hilly terrain with moderate elevation changes
1,824 ft9 ft
Total Climb
3,970 ft
Total Descent
2,185 ft
Highest Point
1,824 ft
~697.2 mi in
Elevation Range
1,814 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between San Diego, CA and Lewiston, CA, road signs point toward Susanville and Whiskeytown National Recreation Area.
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
•San Diego Zoo — zoo in Balboa Park, San Diego, California, United States
•Balboa Park — historic park in San Diego, California
The longest stretch is about 425.9 miles on Westside Freeway. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 349 miles on day one.
Yes — we found about 67 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 Lewiston, 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. Plan at least 3 meaningful breaks. There are 67 rest areas along the route for bathroom stops.
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.
Yes — Whiskeytown National Recreation Area, Cabrillo National Monument and Santa Monica Mountains National Recreation Area. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 13.0 hours each way, a round trip means 26.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Lewiston, CA before the return drive.
