How far is Mammoth Lakes, CA from Riverside, CA?
The driving distance from Mammoth Lakes, CA to Riverside, CA is about 303.2 miles (487.9 km), with a travel time of about 05h 25m by car.
- The straight-line flight distance is about 270.2 miles (434.8 km).
- For a round trip, plan for roughly 10h 51m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 25m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Mammoth Lakes and Riverside.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mammoth Lakes and Riverside.
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1
Start on the route
90 m · 27 sec
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2
Turn left
70 m · 22 sec
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3
Turn left onto Main Street
3.2 mi · 5 min · Main Street
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4
Take the ramp right
1283 ft · 17 sec
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5
Merge slight left onto Dave McCoy Memorial Highway
36.4 mi · 43 min · Dave McCoy Memorial Highway
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6
Turn right onto North Barlow Lane
1 mi · 2 min · North Barlow Lane
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7
Turn left onto West Line Street
1.5 mi · 3 min · West Line Street
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8
Turn right onto South Main Street
2.4 mi · 4 min · South Main Street
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9
Continue on El Camino Sierra
5 mi · 6 min · El Camino Sierra
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10
Continue on Grand Army of the Republic Highway
7.4 mi · 9 min · Grand Army of the Republic Highway
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11
Continue on North Main Street
1317 ft · 32 sec · North Main Street
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12
Continue on Grand Army of the Republic Highway
26.1 mi · 31 min · Grand Army of the Republic Highway
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13
Continue on North Edwards Street
1.1 km · 2 min · North Edwards Street
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14
Continue on Grand Army of the Republic Highway
15.1 mi · 18 min · Grand Army of the Republic Highway
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15
Continue on North Main Street
2.2 mi · 5 min · North Main Street
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16
Continue on Grand Army of the Republic Highway
56.1 mi · 1 hr 5 min · Grand Army of the Republic Highway
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17
Continue on Blue Star Memorial Highway
7 mi · 8 min · Blue Star Memorial Highway
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18
Keep slight left to continue on Blue Star Memorial Highway
29.7 mi · 35 min · Blue Star Memorial Highway
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19
Continue on Red Mountain Road
1.5 km · 2 min · Red Mountain Road
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20
Continue on Blue Star Memorial Highway
66.7 mi · 1 hr 21 min · Blue Star Memorial Highway
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21
Take the exit straight toward I 15 South: San Bernardino, Los Angeles
1.1 km · 1 min
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22
Merge slight left onto Barstow and Mojave Freeway
3.4 mi · 4 min · Barstow and Mojave Freeway
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23
Continue on CHP Officer Larry L. Wetterling and San Bernardino County Sheriff's Lieutenant Alfred E. Stewart Memorial Highway
5.6 mi · 6 min · CHP Officer Larry L. Wetterling and San Bernardino County Sheriff's Lieutenant Alfred E. Stewart Memorial Highway
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24
Continue on Barstow and Mojave Freeway
6.3 mi · 7 min · Barstow and Mojave Freeway
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25
Continue on Barstow Freeway
1095 ft · 13 sec · Barstow Freeway
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26
Keep slight left to continue on Barstow Freeway
9.3 mi · 10 min · Barstow Freeway
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27
Continue on San Bernardino Freeway
5.6 mi · 6 min · San Bernardino Freeway
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28
Continue on Riverside Freeway
5.3 mi · 6 min · Riverside Freeway
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29
Continue on Riverside Freeway
3.6 mi · 4 min · Riverside Freeway
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30
Take the exit slight right toward Central Avenue, Riverside Plaza Avenue
1280 ft · 33 sec
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31
Turn right onto Central Avenue
1.1 km · 1 min · Central Avenue
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32
Turn slight left
52 m · 13 sec
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33
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Mammoth Lakes and Riverside.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Blue Star Memorial Highway
Continue on Blue Star Memorial Highway
66.7 mi · 01h 21m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Mammoth Lakes and Mostly Sunny near Riverside.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mammoth Lakes to Riverside?
The road trip is about 303.2 miles (487.9 km) and usually takes 05h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Indian Wells is a useful midpoint, sitting about 151.6 miles from Mammoth Lakes and 151.6 miles from Riverside.
How much longer is the road route than the straight-line distance?
The direct path is about 270.2 miles (434.8 km), while the road route adds roughly 33 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 6:08 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $61.73 one way or $123.46 round trip. Estimated CO2 is about 95.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Mammoth Lakes and Mostly Sunny near Riverside.
Stop Ideas Near Indian Wells
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 Indian Wells.
Mojave, California
Tehachapi, California
Bakersfield
Lancaster, California
Flight Path Map
This map shows the direct air route between Mammoth Lakes and Riverside. Straight-line distance: 270.14 mi (434.75 km).
#1 Mammoth Lakes
Town in Mono County, California, United States
| Population | 8,317 |
| Coordinates | 37.6485500, -118.9720800 |
| Altitude | 2402 |
| Country | United States |
#2 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 |
End: (-117.396162, 33.953244)
Estimated Travel Time
Distance: 488 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 06m |
| 40 mph (64.37 km/h) | 07h 34m |
| 50 mph (80.47 km/h) | 06h 03m |
| 60 mph (96.56 km/h) | 05h 03m |
| 70 mph (112.65 km/h) | 04h 19m |
| 80 mph (129 km/h) | 03h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $61.73 | $123.46 |
| Mid-grade | $6.07 | $64.91 | $129.81 |
| Premium | $6.24 | $66.80 | $133.60 |
| Diesel | $7.57 | $80.97 | $161.93 |
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 · May 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.