How far is Hillsboro, OR from Ontario, OR?
The driving distance from Hillsboro, OR to Ontario, OR is about 394.8 miles (635.3 km), with a travel time of about 07h 26m by car.
- The straight-line flight distance is about 313 miles (503.8 km).
- For a round trip, plan for roughly 14h 52m 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 07h 26m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
City in Oregon, USA
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 Hillsboro and Ontario.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hillsboro and Ontario.
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1
Start on North 1st Avenue
118 m · 17 sec · North 1st Avenue
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2
Turn right onto Northeast Lincoln Street
1.3 km · 3 min · Northeast Lincoln Street
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3
Turn left onto Northeast Cornell Road
2 mi · 4 min · Northeast Cornell Road
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4
Turn left onto Northeast Brookwood Parkway
1.7 mi · 3 min · Northeast Brookwood Parkway
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5
Turn right onto Northeast Evergreen Parkway
1.5 km · 2 min · Northeast Evergreen Parkway
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6
Turn left onto Northeast Imbrie Drive
2190 ft · 48 sec · Northeast Imbrie Drive
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7
Turn left onto Northeast Cornelius Pass Road
997 ft · 24 sec · Northeast Cornelius Pass Road
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8
Take the ramp slight right toward US 26 East: Portland
1721 ft · 44 sec
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9
Merge slight left onto Northwest Sunset Highway
6.7 mi · 9 min · Northwest Sunset Highway
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10
Continue on Sunset Highway
4.3 mi · 6 min · Sunset Highway
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11
Keep slight right to continue on I 405 South, US 26 East: Salem
1189 ft · 20 sec
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12
Merge slight left onto Stadium Freeway
1.1 km · 59 sec · Stadium Freeway
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13
Take the exit slight right toward I 5 North, I 84 East: The Dalles, Seattle
2616 ft · 45 sec · Stadium Freeway
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14
Merge slight left onto Marquam Bridge
2330 ft · 40 sec · Marquam Bridge
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15
Take the exit slight right toward I 84 East, US 30 East: The Dalles, Portland Airport
1011 ft · 17 sec
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16
Keep slight left to continue on I 84 East, US 30 East: Portland Airport, The Dalles
1.5 km · 1 min
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17
Continue on Banfield Freeway
6.6 mi · 9 min · Banfield Freeway
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18
Continue on Columbia River Highway
158.1 mi · 2 hr 56 min · Columbia River Highway
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19
Continue on Old Oregon Trail Highway
208.8 mi · 3 hr 45 min · Old Oregon Trail Highway
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20
Take the exit slight right toward US 30 BUS: Ontario, T.V.C.C.
1689 ft · 42 sec
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21
Turn right onto East Idaho Avenue
1 km · 1 min · East Idaho Avenue
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22
Turn left onto South Oregon Street
8 m · 1 sec · South Oregon Street
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23
Arrive at your destination
0 m · 1 sec · South Oregon Street
Car Route Details
A richer read on the saved driving route between Hillsboro and Ontario.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Old Oregon Trail Highway
Continue on Old Oregon Trail Highway
209 mi · 03h 45m
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 Hillsboro 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 Hillsboro to Ontario?
The road trip is about 394.8 miles (635.3 km) and usually takes 07h 26m 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?
Hermiston is a useful midpoint, sitting about 197 miles from Hillsboro and 197.7 miles from Ontario.
How much longer is the road route than the straight-line distance?
The direct path is about 313 miles (503.8 km), while the road route adds roughly 81.8 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 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 $68.97 one way or $137.93 round trip. Estimated CO2 is about 123.8 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Hillsboro and Ontario, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Sunny around Hillsboro and Mostly Sunny near Ontario.
Stop Ideas Near Hermiston
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 Hermiston.
Pendleton, Oregon
Pasco Intermodal Train Station
Walla Walla, WA
La Grande, Oregon
Flight Path Map
This map shows the direct air route between Hillsboro and Ontario. Straight-line distance: 313.07 mi (503.84 km).
#1 Hillsboro
The most populous city in Washington County, Oregon.
| Population | 110,985 |
| Coordinates | 45.5228900, -122.9898300 |
| Altitude | 59 |
| Country | United States |
#2 Ontario
City in Oregon, USA
| Population | 11,140 |
| Coordinates | 44.0265500, -116.9629400 |
| Altitude | 656 |
| Country | United States |
End: Ontario (-116.96294, 44.02655)
Estimated Travel Time
Distance: 635 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 09m |
| 40 mph (64.37 km/h) | 09h 52m |
| 50 mph (80.47 km/h) | 07h 53m |
| 60 mph (96.56 km/h) | 06h 34m |
| 70 mph (112.65 km/h) | 05h 38m |
| 80 mph (129 km/h) | 04h 55m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $68.97 | $137.93 |
| Mid-grade | $5.34 | $74.36 | $148.72 |
| Premium | $5.57 | $77.53 | $155.07 |
| Diesel | $6.37 | $88.68 | $177.36 |
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 Oregon · May 28, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.