How far is Riverside, CA from Thermalito, CA?
The driving distance from Riverside, CA to Thermalito, CA is about 502.9 miles (809.4 km), with a travel time of about 09h 29m by car.
- The straight-line flight distance is about 448.6 miles (721.9 km).
- For a round trip, plan for roughly 18h 58m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 09h 29m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Small city in Fresno County, California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Riverside and Thermalito.
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverside and Thermalito.
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1
Start on the route
55 m · 14 sec
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2
Turn right
29 m · 7 sec
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3
Turn right onto Magnolia Avenue
70 m · 15 sec · Magnolia Avenue
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4
Turn left onto Central Avenue
3.5 mi · 6 min · Central Avenue
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5
Turn right onto Van Buren Boulevard
6.1 mi · 8 min · Van Buren Boulevard
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6
Continue on Mission Boulevard
1434 ft · 24 sec · Mission Boulevard
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7
Take the ramp slight left toward CA 60 West
1617 ft · 41 sec
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8
Merge slight left onto Pomona Freeway
12.1 mi · 14 min · Pomona Freeway
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9
Take the exit slight right toward CA 71 South, CA 71 North: Corona, Pomona
1213 ft · 30 sec
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10
Keep slight right to continue on CA 71 North: Pomona
2510 ft · 1 min
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11
Keep slight left
811 ft · 20 sec
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12
Merge slight left onto Chino Valley Freeway
3.5 mi · 4 min · Chino Valley Freeway
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13
Keep slight left to continue on CA 57 North
1.2 km · 2 min
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14
Continue straight
3.4 mi · 4 min
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15
Keep slight left to continue on I 210 West: Pasadena
1.1 mi · 2 min
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16
Merge slight left onto Foothill Freeway
18.3 mi · 21 min · Foothill Freeway
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17
Keep slight right to continue on Foothill Freeway
25.6 mi · 30 min · Foothill Freeway
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18
Keep slight right
686 ft · 9 sec
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19
Merge slight right
1.6 km · 1 min
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20
Keep slight left
36.1 mi · 42 min
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21
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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22
Keep slight right to continue on Westside Freeway
225.6 mi · 4 hr 2 min · Westside Freeway
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23
Keep slight right to continue on Westside Freeway
25.5 mi · 28 min · Westside Freeway
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24
Keep left to continue on Westside Freeway
53.8 mi · 1 hr · Westside Freeway
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25
Keep slight right to continue on Golden State Highway
7.5 mi · 9 min · Golden State Highway
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26
Continue on Bernie Richter Memorial Highway
5 mi · 6 min · Bernie Richter Memorial Highway
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27
Keep slight right to continue on CA 70 North: Marysville, Oroville
21.7 mi · 26 min
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28
Turn right onto 5th Street
1272 ft · 39 sec · 5th Street
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29
Turn left onto B Street
1.5 mi · 3 min · B Street
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30
Continue straight
25.4 mi · 30 min
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31
Take the exit slight right toward Nelson Road
1070 ft · 21 sec
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32
Turn left onto Grand Avenue
1.5 km · 2 min · Grand Avenue
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33
Turn left onto 10th Street
934 ft · 41 sec · 10th Street
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34
Arrive at your destination
0 m · 1 sec · 10th Street
Car Route Details
A richer read on the saved driving route between Riverside and Thermalito.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Keep slight right to continue on Westside Freeway
226 mi · 04h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Riverside and Sunny near Thermalito.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Riverside to Thermalito?
The road trip is about 502.9 miles (809.4 km) and usually takes 09h 29m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Huron is a useful midpoint, sitting about 251.6 miles from Riverside and 251.3 miles from Thermalito.
How much longer is the road route than the straight-line distance?
The direct path is about 448.6 miles (721.9 km), while the road route adds roughly 54.3 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $102.40 one way or $204.80 round trip. Estimated CO2 is about 157.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Riverside and Sunny near Thermalito.
Stop Ideas Near Huron
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Huron.
Lemoore (Naval Air Station), California
Kettleman City, California
Lemoore, California
Hanford station
Flight Path Map
This map shows the direct air route between Riverside and Thermalito. Straight-line distance: 448.55 mi (721.87 km).
#1 Riverside
The most populous city in Riverside County, California and the center of the Riverside metropolitan area.
| Population | 330,786 |
| Coordinates | 33.9533500, -117.3961600 |
| Altitude | 252 |
| Country | United States |
#2 Thermalito
Census-designated place in Butte County, California
| Population | 6,646 |
| Coordinates | 39.5112800, -121.5869200 |
| Altitude | 68 |
| Country | United States |
End: Thermalito (-121.58692, 39.51128)
Estimated Travel Time
Distance: 809 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 16h 45m |
| 40 mph (64.37 km/h) | 12h 34m |
| 50 mph (80.47 km/h) | 10h 03m |
| 60 mph (96.56 km/h) | 08h 22m |
| 70 mph (112.65 km/h) | 07h 11m |
| 80 mph (129 km/h) | 06h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $102.40 | $204.80 |
| Mid-grade | $6.07 | $107.67 | $215.34 |
| Premium | $6.24 | $110.81 | $221.63 |
| Diesel | $7.57 | $134.31 | $268.63 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.