San Jose to Deer Park is 103.3 miles and takes about 2 hours 6 minutes via I-680 and Saint Helena Highway, with a fuel budget near $24 and enough daylight to finish in a day. This drive takes you from the Pacific Coast region to another part of the Pacific Coast, staying within California. You'll experience a mixed drive, transitioning from busy interstate to more winding highway as you head north. It's a manageable distance for a single day, offering a straightforward journey for those looking to explore Wine Country.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
51.6 miles from San Jose, CA
A natural place for your longest stop of the day
, about 1h 2m into the drive
.
Main Roads
Road
Distance
Duration
I 680
37.3 mi
42m
Saint Helena Highway
21.7 mi
25m
I 880
8.5 mi
9m
Senator Daniel E Boatwright Highway
7.9 mi
9m
I 780
6.7 mi
7m
Broadway Street
4 mi
4m
Dwight D. Eisenhower Highway
2.7 mi
3m
Main Street
2.4 mi
2m
Longest stretch:
I 680
— 37.3 mi, about 42m
Turn-by-Turn Driving Directions
Step-by-step road directions between San Jose, CA and Deer Park, CA.
1
Start on North Market Street
196 ft·8 sec·North Market Street
2
Continue on Coleman Avenue
1.4 mi·2 min·Coleman Avenue
Use the straight lane.
3
Take the ramp
0.3 mi·42 sec
Toward I 880 North: OaklandUse the right lane.
4
Merge onto I 880
8.5 mi·9 min·I 880
Use the straight / slight right lanes.
5
Keep slight right at fork onto I 880
0.6 mi·41 sec·Nimitz Freeway
6
Take the exit onto CA 262
1.6 mi·2 min·CA 262
Exit 12AToward SacramentoUse the slight right lane.
7
Take the exit
0.2 mi·24 sec
Toward I 680 North: SacramentoUse the straight lane.
8
Keep slight left at fork
0.3 mi·41 sec
Toward I 680 North: SacramentoUse the straight lane.
9
Merge onto I 680
37 mi·42 min·I 680
Use the straight / slight right lanes.
10
Keep slight left at fork onto I 680
6.0 mi·6 min·Senator Daniel E Boatwright Highway
Toward I 680 North: Martinez, SacramentoUse the straight / slight right lanes.
11
Keep slight left at fork onto I 680
243 ft·3 sec·Senator Daniel E Boatwright Highway
12
Keep slight right at fork onto I 680
1.8 mi·2 min·Senator Daniel E Boatwright Highway
Use the slight right lane.
13
Keep slight left at fork onto I 780
6.7 mi·7 min·I 780
Toward I 780: BeniciaUse the straight / slight right lanes.
14
Take the exit
0.3 mi·33 sec
Exit 1BToward I 80 East: SacramentoUse the slight right lane.
15
Keep slight left at fork
448 ft·11 sec
Toward I 80 East: SacramentoUse the slight left lane.
16
Merge onto I 80
2.7 mi·3 min·Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
17
Take the exit
0.1 mi·18 sec
Exit 33Toward CA 37: Napa, Novato, Auto Mall, Columbus ParkwayUse the straight / slight right lanes.
18
Keep slight left at fork
0.5 mi·1 min
Toward CA 37: NapaUse the straight / slight right lanes.
19
Continue on CA 37
1.5 mi·1 min·CA 37
Toward CA 37Use the straight / slight right lanes.
20
Take the exit
0.4 mi·51 sec
Exit 19Toward CA 29: Napa, Sonoma BoulevardUse the straight / slight right lanes.
21
Turn right onto CA 29
1.6 mi·1 min·Sonoma Boulevard
Use the right lane.
22
Continue on CA 29
4.0 mi·4 min·Broadway Street
Use the straight lane.
23
Continue on CA 29
1.3 mi·1 min·Napa–Vallejo Highway
Use the left lane.
24
Continue on CA 12; CA 29
22 mi·25 min·Saint Helena Highway
Use the straight / slight right lanes.
25
Continue on CA 29; CA 128
2.4 mi·2 min·Main Street
26
Turn right onto Deer Park Road
1.5 mi·2 min·Deer Park Road
27
Turn right onto Mund Road
0.4 mi·1 min·Mund Road
28
Arrive at destination
Mund Road
Trip Plan
Given the 2-hour 6-minute duration, departing San Jose in the morning is recommended to maximize your time in Deer Park. The fuel cost is estimated at $24, so ensure your tank is full before leaving. While there are no designated stops in the data, the longest stretch is 37.3 miles, so plan for a brief break around that point if needed. Pay attention as you transition from the major interstates to Saint Helena Highway, as the road character changes. With a total distance of 103.3 miles, this trip is easily completed in one day, offering flexibility in your departure time.
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 51.6 miles from San Jose, CA, or about 1h 2m into the drive.
The longest continuous stretch on this route runs about 37.3 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 23 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 51.6 miles or 1h 2m 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 42m
Traffic, exits, and arrival timing usually matter more near Deer Park, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving San Jose, 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 San Jose, CA
This is one driving day of about 103.3 miles and 2h 6m.
Your first comfortable stop window is around 23 miles from San Jose, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 680 for about 37.3 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 21
5 decision points cluster between mile 12.7 and 70 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
12.7 mi into trip|~16m in
Keep slight left at fork toward I 680 North: Sacramento
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight lane.
Toward I 680 North: Sacramento
8
50.3 mi into trip|~1h in|I 680 / Senator Daniel E Boatwright Highway
Keep slight left at fork onto I 680 / Senator Daniel E Boatwright Highway toward I 680 North: Martinez, Sacramento
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 680 North: Martinez, Sacramento
8
65.1 mi into trip|~1h 17m in
Keep slight left at fork toward I 80 East: Sacramento
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 80 East: Sacramento
8
67.9 mi into trip|~1h 21m in
Take the exit toward CA 37: Napa, Novato, Auto Mall, Columbus Parkway
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 33
Toward CA 37: Napa, Novato, Auto Mall, Columbus...
8
70 mi into trip|~1h 24m in
Take the exit toward CA 29: Napa, Sonoma Boulevard
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 19
Toward CA 29: Napa, Sonoma Boulevard
Fuel & Cost
Regular Gas
$23.74 one way
$47.49 round trip
$5.84/gal25.4 MPG avg36 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$24.47
$48.93
premium
$6.18
$25.12
$50.24
diesel
$5.61
$22.81
$45.61
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$24
Meals
$25–$50
Total
$49–$74
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 36.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
31
0
$10.85
$4.96
Efficient EV
25.8
0
$9.04
$4.13
EV Truck/SUV
41.3
0
$14.46
$6.61
Gas CO2
36 kg
EV CO2
12 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.
Forecast as of Apr 16, 2026
Origin
San Jose, CA
Morning
in San Jose on Sunday
Local time
7:50 AM
PDT
Current temp
71°F
Sunny
NNW 5 to 14 mph0% chanceLive forecast
Freeze Warning
Freeze Warning issued April 16 at 10:43AM PDT until April 17 at 11:00AM PDT by NWS Medford OR
Wind Advisory
Wind Advisory issued April 16 at 10:32AM PDT until April 17 at 11:00AM PDT by NWS Hanford CA
Destination
Deer Park, CA
Morning
in Deer Park on Sunday
Local time
7:50 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.
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
2h 6m 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.
Port Chicago Naval Magazine National Memorial
National Memorial
On July 17, 1944, a massive explosion jolted the San Francisco East Bay area, shattering windows and lighting up the night sky. At Port Chicago Naval Magazine, 320 men were killed instantly when two s...
5 mi from route
~12 min detour
Free
near mile 53.4
Rosie the Riveter WWII Home Front National Historical Park
National Historical Park
Celebrate and honor the contributions and sacrifices of American civilians on the WWII home front. Discover how diverse communities lived, worked, and interacted. Many faces, many stories, many truths...
15 mi from route
~36 min detour
Free
near mile 64.1
Established in 1988, San Francisco Maritime National Historical Park celebrates America’s maritime heritage on the Pacific Coast. Our 50-acre park has grown around Aquatic Park Cove, a protected area...
20 mi from route
~51 min detour
Free
near mile 46.3
Walk among old growth coast redwoods, cooling their roots in the fresh water of Redwood Creek and lifting their crowns to reach the sun and fog. Federally protected as a National Monument since 1908,...
24 mi from route
~60 min detour
$15
near mile 64.1
Experience a park so rich it supports 19 distinct ecosystems with over 2,000 plant and animal species. Go for a hike, enjoy a vista, have a picnic or learn about the centuries of overlapping history f...
26 mi from route
~66 min detour
Free
near mile 64.1
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route offers a mixed drive experience, with 54% of it on highways. You'll encounter stretches on I-880 and I-680, providing a faster pace for a significant portion of the journey. The longest uninterrupted stretch is 37.3 miles on I-680, allowing for steady progress. As you transition to Saint Helena Highway, expect the road to become more winding, characteristic of routes leading into wine regions. This blend means you'll have both efficient travel and a more scenic, engaging drive as you near your destination.
54% highway, the rest on surface roads — varied driving throughout.
28 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 37.3 mi on I 680.
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 around 12.7 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 21 significant decision points across 103.3 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 12.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 50.3 miles (I 680 / Senator Daniel E Boatwright Highway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 65.1 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.
Between San Jose, CA and Deer Park, CA, road signs point toward Sacramento, Novato and Auto Mall.
Often called "the capital of Silicon Valley", San Jose is the largest city in the Bay Area, 3rd largest in California, and the 12th largest city in the United States, with a population of over 997,000 residents as of 2024. It was named the 6th safest big city in the U.S. in 2015. This clean, sprawling metropolis has sports, beautiful vistas, and ethnic enclaves and bleeds into the greater Bay Area for travelers who want to take their time in Northern California.
Doable as a same-day drive at 2h 6m. Total distance: 103.3 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 6m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (54%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 37.3 miles on I 680. 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 Deer Park, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 12.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 50.3 miles (I 680 / Senator Daniel E Boatwright Highway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 65.1 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Port Chicago Naval Magazine National Memorial, Rosie the Riveter WWII Home Front National Historical Park and San Francisco Maritime National Historical Park (5 total within detour distance). 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 Deer Park, CA before heading back.
