Fontana to Mill Valley is 440.6 miles and takes about 8h 17m via Westside Freeway, Foothill Freeway, I 5 Truck, with a fuel budget near $101 and enough daylight to finish in a day. This trip stays within California, moving from the Pacific Coast region towards the same region. It's a predominantly highway route, making it efficient for covering ground. With a recommended two days for the drive, you can comfortably pace yourself and make the most of the limited stops. This route is ideal if you're looking for a straightforward drive with minimal navigation challenges.
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
220.3 miles from Fontana, CA
A natural place for your longest stop of the day
, about 4h 8m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
225.6 mi
4h 1m
Foothill Freeway
67.2 mi
1h 17m
I 5 Truck
37.1 mi
42m
Arthur H. Breed Junior Freeway
29.6 mi
34m
Golden State Freeway
22.3 mi
25m
William Elton Brown Freeway
17 mi
18m
MacArthur Freeway
16.7 mi
19m
John T. Knox Freeway
11.6 mi
15m
Longest stretch:
Westside Freeway
— 225.6 mi, about 4h 1m
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana, CA and Mill Valley, CA.
1
Start on Merrill Avenue
205 ft·6 sec·Merrill Avenue
2
Turn right onto Sierra Avenue
3.0 mi·4 min·Sierra Avenue
Use the left / straight lanes.
3
Take the ramp
0.3 mi·45 sec
Toward CA 210 WestUse the straight / slight right lanes.
4
Merge onto CA 210
15 mi·17 min·Foothill Freeway
Use the straight / slight right lanes.
5
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
6
Keep slight right at fork onto CA 210
2.4 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
7
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto CA 210
20 mi·23 min·Foothill Freeway
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 210
26 mi·29 min·Foothill Freeway
Exit 26AToward I 210 West: SacramentoUse the straight / slight right lanes.
11
Keep slight right at fork
0.1 mi·9 sec
Use the slight right lane.
12
Merge onto I 5 Truck
1.0 mi·1 min·I 5 Truck
Exit 161A
13
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
15
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.
16
Keep slight left at fork onto I 580
16 mi·17 min·William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
17
Keep slight right at fork onto I 580 Bypass
1.1 mi·1 min·William Elton Brown Freeway
18
Merge onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
19
Keep slight right at fork onto I 580
12 mi·13 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
20
Keep slight right at fork onto I 580
8.3 mi·9 min·MacArthur Freeway
Toward I 580: Oakland, San FranciscoUse the slight left / slight right lanes.
21
Keep slight left at fork onto I 580
8.3 mi·9 min·MacArthur Freeway
Use the straight / slight right lanes.
22
Continue on I 80; I 580
3.3 mi·4 min·Eastshore Freeway
Use the straight / slight right lanes.
23
Keep slight right at fork onto I 580
12 mi·15 min·John T. Knox Freeway
Exit 13BToward I 580 West: Point Richmond, San RafaelUse the straight / slight right lanes.
24
Take the exit
0.4 mi·35 sec
Exit 2AToward Sir Francis Drake BoulevardUse the slight right lane.
25
Keep slight left at fork onto Sir Francis Drake Boulevard East
1.5 mi·2 min·Sir Francis Drake Boulevard East
Use the straight lane.
26
Take the ramp
0.3 mi·35 sec
Toward US 101 South: San FranciscoUse the left / straight lanes.
27
Merge onto US 101
2.5 mi·3 min·Redwood Highway
Use the straight lane.
28
Take the exit
0.3 mi·31 sec
Exit 447Toward CA 131: Tiburon Boulevard, East Blithedale AvenueUse the slight right lane.
29
Turn right onto CA 131
1.7 mi·4 min·East Blithedale Avenue
Use the right lane.
30
Turn right onto Hill Street
295 ft·17 sec·Hill Street
31
Turn left onto Sunnyside Avenue
250 ft·8 sec·Sunnyside Avenue
32
Arrive at destination
Sunnyside Avenue
Trip Plan
Given the 8h 17m estimated drive time, splitting this into two days is a good idea for a more relaxed experience. Aim to leave Fontana early in the morning to maximize daylight. You'll have two planned stops, so consider using them strategically to break up the 225.6-mile stretch on the Westside Freeway. Keep an eye on your fuel levels, especially during the longer highway segments, as services can be spaced out. The $101 fuel cost estimate should help you budget accordingly for gas along the way.
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 220.3 miles from Fontana, CA, or about 4h 8m 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 97 miles or 1h 53m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 220.3 miles or 4h 8m 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 220.3 miles or 4h 8m
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
Traffic, exits, and arrival timing usually matter more near Mill Valley, 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.
+
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 Fontana, CA
Aim for roughly 220 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into Mill Valley, CA
Aim for roughly 220 miles and 4.1 hours of wheel time on this day.
Your first comfortable stop window is around 97 miles from Fontana, 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.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 29
5 decision points cluster between mile 45 and 438.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
45 mi into trip|~53m in|I 210 / Foothill Freeway
Keep slight right at fork onto I 210 / Foothill Freeway toward I 210 West: Sacramento
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 26A
Toward I 210 West: Sacramento
7
130.1 mi into trip|~2h 31m 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
8
402.3 mi into trip|~7h 25m in|I 580 / MacArthur Freeway
Keep slight right at fork onto I 580 / MacArthur Freeway toward I 580: Oakland, San Francisco
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Toward I 580: Oakland, San Francisco
9
422.3 mi into trip|~7h 49m in|I 580 / John T. Knox Freeway
Keep slight right at fork onto I 580 / John T. Knox Freeway toward I 580 West: Point Richmond, San Rafael
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 13B
Toward I 580 West: Point Richmond, San Rafael
8
438.6 mi into trip|~8h 11m in
Take the exit toward CA 131: Tiburon Boulevard, East Blithedale Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 447
Toward CA 131: Tiburon Boulevard, East Blitheda...
Fuel & Cost
Regular Gas
$101.27 one way
$202.54 round trip
$5.84/gal25.4 MPG avg154 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$104.36
$208.71
premium
$6.18
$107.15
$214.30
diesel
$5.61
$97.28
$194.56
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$101
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$231–$341
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 154.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
22 DC fast chargers
· Coverage: excellent
Falcon Ridge Town Center - Tesla Supercharger
Fontana, CA
Tesla
24 DCFC
Ontario Mills - Tesla Supercharger
Ontario, CA
Tesla
24 DCFC
Gateway Shopping Center - Tesla Supercharger
Ontario, CA
Tesla
20 DCFC
7-Eleven - Tesla Supercharger
Ontario, CA
Tesla
16 DCFC
4 Gen Logistics Green City (Rialto, CA)
Rialto, CA
Electrify America
12 DCFC
Victoria Gardens - Tesla Supercharger
Rancho Cucamonga, CA
Tesla
12 DCFC
International Restaurant Village - Tesla Supercharger
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $46 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
132.2
1
$46.26
$21.15
Efficient EV
110.2
1
$38.55
$17.62
EV Truck/SUV
176.2
2
$61.68
$28.20
Gas CO2
154 kg
EV CO2
52 kg (66% 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.
Forecast as of Apr 15, 2026
Origin
Fontana, CA
Night
in Fontana on Saturday
Local time
9:34 PM
PDT
Current temp
76°F
Unavailable
Live forecast
Destination
Mill Valley, CA
Night
in Mill Valley on Saturday
Local time
9:34 PM
PDT
Current temp
66°F
Unavailable
Live forecast
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
10 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
8h 17m 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.
Muir Woods National Monument
National Monument
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,...
2 mi from route
~5 min detour
$15
near mile 440.6
Caution: Auto-Theft Warning - Only Bring What You Need to the Park
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...
2 mi from route
~4 min detour
Free
near mile 425.4
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...
4 mi from route
~11 min detour
Free
near mile 440.6
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...
9 mi from route
~23 min detour
Free
near mile 425.4
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...
19 mi from route
~48 min detour
Free
near mile 425.4
From its thunderous ocean breakers crashing against rocky headlands and expansive sand beaches to its open grasslands, brushy hillsides, and forested ridges, Point Reyes offers visitors over 1500 spec...
21 mi from route
~52 min detour
Free
near mile 440.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a highway-heavy route, with 98% of the drive on main roads. You'll encounter a long stretch of 225.6 miles on the Westside Freeway, which means extended periods of consistent cruising. Expect the bulk of your travel to be on these major arteries. The transition from highway to surface roads will likely occur very late in your drive, given the high highway percentage.
98% highway — fuel and pacing are the main things to plan.
32 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 225.6 mi on Westside Freeway.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on Westside Freeway and Foothill Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 45 miles in near I 210 / Foothill Freeway.
Driving Effort9/10
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 29 significant decision points across 440.6 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 45 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 130.1 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 402.3 miles (I 580 / MacArthur Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
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 Mill Valley, CA, road signs begin pointing toward San Francisco along the way.
The longest stretch is about 225.6 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 220 miles on day one.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Mill Valley, 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 2 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 45 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 130.1 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 402.3 miles (I 580 / MacArthur Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Not recommended in a single day. At 8.3 hours each way, a round trip means 16.6 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Mill Valley, CA before the return drive.
