How far is Riverside, CA from Ontario, CA?
The driving distance from Riverside, CA to Ontario, CA is about 18.3 miles (29.4 km), with a travel time of about 00h 28m by car.
- The straight-line flight distance is about 16.5 miles (26.5 km).
- For a round trip, plan for roughly 00h 57m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM PDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 28m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The most populous city in Riverside County, California.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Riverside and Ontario.
Turn-by-Turn Driving Directions
Step-by-step road directions between Riverside and Ontario.
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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
7.8 mi · 12 min · Mission Boulevard
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7
Turn right onto South Euclid Avenue
2767 ft · 51 sec · South Euclid Avenue
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8
Turn right onto East Transit Street
113 m · 22 sec · East Transit Street
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9
Turn left onto South Lemon Avenue
79 m · 17 sec · South Lemon Avenue
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10
Turn left onto Holt Boulevard
118 m · 11 sec · Holt Boulevard
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11
Arrive at your destination
0 m · 1 sec · Holt Boulevard
Car Route Details
A richer read on the saved driving route between Riverside and Ontario.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Mission Boulevard
Continue on Mission Boulevard
7.84 mi · 00h 12m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Riverside and Mostly Sunny near Ontario.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Riverside to Ontario?
The road trip is about 18.3 miles (29.4 km) and usually takes 00h 28m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Jurupa Valley is a useful midpoint, sitting about 9.1 miles from Riverside and 9.1 miles from Ontario.
How much longer is the road route than the straight-line distance?
The direct path is about 16.5 miles (26.5 km), while the road route adds roughly 1.8 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 7:00 AM to 7:00 PM PDT. If you want a more comfortable same-day return, try to leave by 7:32 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.69 one way or $7.38 round trip. Estimated CO2 is about 5.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Riverside and Mostly Sunny near Ontario.
Stop Ideas Near Jurupa Valley
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Ayres Hotel Chino Hills
City Hall
Chino City Hall
Jurupa Valley City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Jurupa Valley.
Riverside–Downtown
Ontario
Moreno Valley, California
Claremont, California
Flight Path Map
This map shows the direct air route between Riverside and Ontario. Straight-line distance: 16.45 mi (26.47 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 Ontario
The second most populous city in San Bernardino County, California.
| Population | 183,393 |
| Coordinates | 34.0633400, -117.6508900 |
| Altitude | 306 |
| Country | United States |
End: Ontario (-117.65089, 34.06334)
Estimated Travel Time
Distance: 29 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 36m |
| 40 mph (64.37 km/h) | 00h 27m |
| 50 mph (80.47 km/h) | 00h 21m |
| 60 mph (96.56 km/h) | 00h 18m |
| 70 mph (112.65 km/h) | 00h 15m |
| 80 mph (129 km/h) | 00h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $3.69 | $7.38 |
| Mid-grade | $6.07 | $3.88 | $7.76 |
| Premium | $6.24 | $4.00 | $7.99 |
| Diesel | $7.57 | $4.84 | $9.69 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.