Riverside, CA to Humboldt Hill, CA is 691.1 miles and takes about 13h 25m via Westside Freeway, Redwood Highway, and Saint Helena Highway, with a fuel budget near $151 and best split over two days. This extensive drive connects two points along California's Pacific Coast, offering a mix of highway cruising and more scenic stretches. With a highway share of 57%, you'll spend a significant portion of your time on faster roads, but it's a long-haul trip that requires careful planning. Consider breaking it up over two days to make the most of the experience and avoid fatigue.
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
345.6 miles from Riverside, CA
A natural place for your longest stop of the day
, about 6h 28m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
225.6 mi
4h 1m
Redwood Highway
181.7 mi
3h 42m
Saint Helena Highway
51.2 mi
59m
Foothill Freeway
43.9 mi
50m
I 5 Truck
37.1 mi
42m
Golden State Freeway
22.3 mi
25m
Arthur H. Breed Junior Freeway
19.6 mi
22m
William Elton Brown Freeway
17 mi
18m
Longest stretch:
Westside Freeway
— 225.6 mi, about 4h 1m
Traffic on I-5
Hour-of-day weekday pattern from 162 FHWA count stations on your route.
Peak
2 PM
~1,824 veh/hr typical
· worst 2,650
Quietest
2 AM
~367 veh/hr
Peak-to-quiet ratio
5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 89 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 Riverside, CA and Humboldt Hill, CA.
1
Start on this road
181 ft·13 sec·this road
2
Turn right
94 ft·7 sec
3
Turn right onto Magnolia Avenue
228 ft·14 sec·Magnolia Avenue
4
Turn left onto Central Avenue
3.5 mi·6 min·Central Avenue
Use the left lane.
5
Turn right onto Van Buren Boulevard
6.1 mi·8 min·Van Buren Boulevard
Use the right lane.
6
Continue on Mission Boulevard
0.3 mi·24 sec·Mission Boulevard
Use the straight lane.
7
Take the ramp
0.3 mi·41 sec
Toward CA 60 West
8
Merge onto CA 60
12 mi·13 min·Pomona Freeway
Use the straight / slight right lanes.
9
Take the exit
0.2 mi·29 sec
Exit 29BToward CA 71 South, CA 71 North: Corona, PomonaUse the straight / slight right lanes.
10
Keep slight right at fork
0.5 mi·1 min
Toward CA 71 North: PomonaUse the slight right lane.
11
Keep slight left at fork
0.2 mi·19 sec
Use the straight / slight right lanes.
12
Merge onto CA 71
3.5 mi·4 min·Chino Valley Freeway
Use the straight / slight right lanes.
13
Keep slight left at fork
0.7 mi·1 min
Toward CA 57 North
14
Continue on CA 57
3.4 mi·3 min·CA 57
Use the straight / slight right lanes.
15
Keep slight left at fork
1.1 mi·2 min
Exit 25CToward I 210 West: Pasadena
16
Merge onto I 210
18 mi·21 min·Foothill Freeway
Use the straight / slight right lanes.
17
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.
18
Keep slight right at fork
0.1 mi·9 sec
Use the slight right lane.
19
Merge onto I 5 Truck
1.0 mi·1 min·I 5 Truck
Exit 161A
20
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
21
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
22
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.
23
Keep slight left at fork onto I 580
16 mi·17 min·William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
24
Keep slight right at fork onto I 580 Bypass
1.1 mi·1 min·William Elton Brown Freeway
25
Merge onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
26
Keep slight right at fork onto I 580
1.6 mi·1 min·Arthur H. Breed Junior Freeway
27
Take the exit
0.2 mi·16 sec
Exit 44BToward I 680 South, I 680 North: San Jose, Sacramento, Concord, Walnut CreekUse the slight right lane.
28
Keep slight right at fork
0.3 mi·30 sec
Toward I 680 North: Walnut Creek, Concord, SacramentoUse the straight / slight right lanes.
29
Merge onto I 680
15 mi·17 min·Donald D Doyle Highway
Use the straight / slight right lanes.
30
Continue on I 680
5.0 mi·5 min·Senator Daniel E Boatwright Highway
Toward I 680, CA 24Use the straight / slight right lanes.
31
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.
32
Keep slight left at fork onto I 680
243 ft·3 sec·Senator Daniel E Boatwright Highway
33
Keep slight right at fork onto I 680
1.8 mi·2 min·Senator Daniel E Boatwright Highway
Use the slight right lane.
34
Keep slight left at fork onto I 780
6.7 mi·7 min·I 780
Toward I 780: BeniciaUse the straight / slight right lanes.
35
Take the exit
0.3 mi·33 sec
Exit 1BToward I 80 East: SacramentoUse the slight right lane.
36
Keep slight left at fork
448 ft·11 sec
Toward I 80 East: SacramentoUse the slight left lane.
37
Merge onto I 80
2.7 mi·3 min·Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
38
Take the exit
0.1 mi·18 sec
Exit 33Toward CA 37: Napa, Novato, Auto Mall, Columbus ParkwayUse the straight / slight right lanes.
39
Keep slight left at fork
0.5 mi·1 min
Toward CA 37: NapaUse the straight / slight right lanes.
40
Continue on CA 37
1.5 mi·1 min·CA 37
Toward CA 37Use the straight / slight right lanes.
41
Take the exit
0.4 mi·51 sec
Exit 19Toward CA 29: Napa, Sonoma BoulevardUse the straight / slight right lanes.
42
Turn right onto CA 29
1.6 mi·1 min·Sonoma Boulevard
Use the right lane.
43
Continue on CA 29
4.0 mi·4 min·Broadway Street
Use the straight lane.
44
Continue on CA 29
1.3 mi·1 min·Napa–Vallejo Highway
Use the left lane.
45
Continue on CA 12; CA 29
22 mi·25 min·Saint Helena Highway
Use the straight / slight right lanes.
46
Continue on CA 29; CA 128
2.4 mi·2 min·Main Street
47
Continue on CA 29; CA 128
6.8 mi·7 min·Saint Helena Highway
48
Continue on CA 128
1.4 mi·1 min·Foothill Boulevard
49
Continue on CA 128
16 mi·18 min·Saint Helena Highway
50
Continue on CA 128
6.6 mi·7 min·Saint Helena Highway
51
At end of road, turn right onto CA 128
0.9 mi·1 min·Geyserville Avenue
52
Turn left onto CA 128
359 ft·6 sec·Canyon Road
53
Take the exit onto CA 128
0.3 mi·39 sec·CA 128
54
Merge onto US 101; CA 128
55 mi·1 hr 7 min·Redwood Highway
Use the straight / slight right lanes.
55
Continue on US 101
4.5 mi·5 min·Willits Bypass
Use the straight / slight right lanes.
56
Take the exit
0.7 mi·48 sec
57
Merge onto US 101
0.2 mi·16 sec·Willits Bypass
58
Continue on US 101
126 mi·2 hr 35 min·Redwood Highway
Use the straight / slight right lanes.
59
Take the exit
0.3 mi·36 sec
Toward King Salmon
60
Continue on South Broadway Street
0.1 mi·25 sec·South Broadway Street
61
Turn right onto Purdue Drive
0.3 mi·1 min·Purdue Drive
62
Turn left onto Stanford Drive
0.2 mi·42 sec·Stanford Drive
63
Turn right onto Humboldt Hill Road
0.7 mi·1 min·Humboldt Hill Road
64
Turn left onto Skyline Drive
0.1 mi·36 sec·Skyline Drive
65
Turn left onto Vista Road
0.2 mi·53 sec·Vista Road
66
Continue on Linda Road
0.4 mi·1 min·Linda Road
67
Continue on Linda Road
350 ft·17 sec·Linda Road
68
Continue on Linda Road
116 ft·5 sec·Linda Road
69
Arrive at destination
Linda Road
Trip Plan
Given the 13h 25m duration, this trip is best tackled over two days. Aim for an early morning departure to maximize daylight, especially if you plan to drive significant portions on either day. The longest stretch without a break is 225.6 miles, so plan your fuel and rest stops accordingly, perhaps every 100-150 miles. The total fuel cost is estimated at $151, so budget for that. Consider spending your overnight stop somewhere around the halfway point to break up the driving and make the trip more manageable.
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 345.6 miles from Riverside, CA, or about 6h 28m 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 152 miles or 3h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 345.6 miles or 6h 28m 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 345.6 miles or 6h 28m
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 12h 6m
Traffic, exits, and arrival timing usually matter more near Humboldt Hill, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Riverside, 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 Riverside, CA
Aim for roughly 346 miles and 6.7 hours of wheel time on this day.
Day 2
Finish the approach into Humboldt Hill, CA
Aim for roughly 346 miles and 6.7 hours of wheel time on this day.
Your first comfortable stop window is around 152 miles from Riverside, 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 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 52
5 decision points cluster between mile 22.4 and 418.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
22.4 mi into trip|~30m in
Take the exit toward CA 71 South, CA 71 North: Corona, Pomona
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 29B
Toward CA 71 South, CA 71 North: Corona, Pomona
8
50.4 mi into trip|~1h 5m 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
8
397.6 mi into trip|~7h 26m in
Take the exit toward I 680 South, I 680 North: San Jose, Sacramento, Concord, Walnut Creek
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 44B
Toward I 680 South, I 680 North: San Jose, Sacr...
9
397.8 mi into trip|~7h 26m in
Keep slight right at fork toward I 680 North: Walnut Creek, Concord, 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: Walnut Creek, Concord, Sacr...
8
418.3 mi into trip|~7h 50m 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
Fuel & Cost
Regular Gas
$153.21 one way
$306.42 round trip
$5.63/gal25.4 MPG avg242 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.81
$158.11
$316.22
premium
$5.98
$162.79
$325.58
diesel
$5.60
$152.34
$304.68
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$153
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$283–$393
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 241.8 kg one way.
Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $73 in charging
· 2 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
207.3
2
$72.57
$33.17
Efficient EV
172.8
1
$60.47
$27.64
EV Truck/SUV
276.4
3
$96.75
$44.23
Gas CO2
242 kg
EV CO2
81 kg (67% 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 Aug 14, 2026
Origin
Riverside, CA
Late night
in Riverside on Friday
Local time
3:16 AM
PDT
Current temp
64°F
Mostly Cloudy then Patchy Fog
W 0 to 5 mph1% chanceLive forecast
Lake Wind Advisory
Lake Wind Advisory issued August 13 at 5:32PM PDT until August 14 at 2:00AM PDT by NWS Hanford CA
Destination
Humboldt Hill, CA
Late night
in Humboldt Hill on Friday
Local time
3:16 AM
PDT
Current temp
55°F
Slight Chance Drizzle
NW 2 to 6 mph15% chanceLive forecast
Lake Wind Advisory
Lake Wind Advisory issued August 13 at 5:32PM PDT until August 14 at 2:00AM PDT by NWS Hanford 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
9 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 25m 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.
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...
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
~38 min detour
Free
near mile 429
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...
23 mi from route
~56 min detour
Free
near mile 429
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...
24 mi from route
~61 min detour
Free
near mile 71.5
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,...
Yes, we can! Widely recognized as the most important Latino leader in the United States during the twentieth century, Cesar Chavez led farm workers and supporters in the establishment of the country's...
28 mi from route
~71 min detour
Free
near mile 143
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a long-haul drive where 57% of the route is on highways. You'll encounter a stretch of 225.6 miles on the Westside Freeway, which means extended periods of consistent speed. Expect the transition from high-speed freeway to surface roads to occur noticeably as you progress. The route involves significant time on primary routes like the Redwood Highway and Saint Helena Highway, suggesting a blend of efficient travel and potentially more winding sections as you near your destination.
57% highway, the rest on surface roads — varied driving throughout.
69 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?
10/10
At 13h 25m, this is a long-haul route where pacing matters more than any single turn. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 22.4 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 52 significant decision points across 691.1 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 22.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 50.4 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 397.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
2,763 ft58 ft
Total Climb
3,794 ft
Total Descent
4,286 ft
Highest Point
2,763 ft
~98.7 mi in
Elevation Range
2,705 ft
Notable High Points
2,763 ft at ~98.7 miles+1,932 ft prominence
1,551 ft at ~592.4 miles+822 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Riverside, CA and Humboldt Hill, CA, road signs point toward San Francisco, Sacramento, Concord, Walnut Creek, Novato and Auto Mall.
Riverside is a city in Riverside County in California. With a population of over 300,000, the city plays host to a diverse cross-section of people and has a rich history. Riverside is approximately 55 miles east of downtown Los Angeles. It is a center for higher education, with one community college, a large state university, and two private universities. A hub of regional commerce and transportation, it is a city with an intriguing past and a promising future, and is worth a visit.
Top landmarks
•Mission Inn — hotel in Riverside, California
•Universalist Unitarian Church of Riverside — church building in Riverside, California, USA
•First Congregational Church of Riverside — church building in Riverside, California, United States of America
Long-haul drive route profile with national parks nearby.
Frequently Asked Questions
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 346 miles on day one.
Yes — we found about 40 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 Humboldt Hill, 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 40 rest areas along the route for bathroom stops.
The main spots that need attention: at 22.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 50.4 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 397.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Port Chicago Naval Magazine National Memorial, Rosie the Riveter WWII Home Front National Historical Park and San Francisco Maritime National Historical Park (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 13.4 hours each way, a round trip means 26.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Humboldt Hill, CA before the return drive.
