How far is Ontario, OR from Hillsboro, OR?
The driving distance from Ontario, OR to Hillsboro, OR is about 396.5 miles (638.1 km), with a travel time of about 06h 19m by car.
- The straight-line flight distance is about 313 miles (503.8 km).
- For a round trip, plan for roughly 12h 39m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
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 06h 19m.
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
Sunny
Driving Route Map
The map below follows the saved road route between Ontario and Hillsboro.
Turn-by-Turn Driving Directions
Step-by-step road directions between Ontario and Hillsboro.
-
1
Start on South Oregon Street
8 m · 3 sec · South Oregon Street
-
2
Turn right onto East Idaho Avenue
1.3 km · 1 min · East Idaho Avenue
-
3
Turn left
2067 ft · 50 sec
-
4
Merge slight left onto Old Oregon Trail Highway
208.1 mi · 3 hr 45 min · Old Oregon Trail Highway
-
5
Continue on Columbia River Highway
158.3 mi · 2 hr 56 min · Columbia River Highway
-
6
Continue on Banfield Freeway
6.8 mi · 9 min · Banfield Freeway
-
7
Keep slight left to continue on I 5 South: Salem, OMSI, City Center
1906 ft · 32 sec
-
8
Keep slight left to continue on I 5 South: Beaverton, Salem
80 m · 5 sec
-
9
Merge slight left
1.1 mi · 2 min
-
10
Take the exit slight left toward I 405, US 26: Beaverton
1804 ft · 31 sec · Stadium Freeway
-
11
Merge slight left onto Stadium Freeway
1.1 km · 59 sec · Stadium Freeway
-
12
Take the exit slight right toward US 26 West: Beaverton
5 mi · 7 min
-
13
Continue on Northwest Sunset Highway
3.1 mi · 4 min · Northwest Sunset Highway
-
14
Take the exit slight right toward Cornell Road, Bethany Boulevard
1157 ft · 26 sec
-
15
Keep slight left
62 m · 10 sec
-
16
Turn left onto Northwest Cornell Road
1.7 mi · 3 min · Northwest Cornell Road
-
17
Continue on Northeast Cornell Road
5.1 mi · 11 min · Northeast Cornell Road
-
18
Continue on Northeast Cornell Road
1.1 km · 1 min · Northeast Cornell Road
-
19
Turn slight right
70 m · 11 sec
-
20
Turn right onto East Main Street
1.2 km · 3 min · East Main Street
-
21
Turn right onto North 1st Avenue
24 m · 3 sec · North 1st Avenue
-
22
Arrive at your destination
0 m · 1 sec · North 1st Avenue
Car Route Details
A richer read on the saved driving route between Ontario and Hillsboro.
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
Merge slight left onto Old Oregon Trail Highway
208 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.
Mostly Sunny leaving Ontario and Sunny near Hillsboro.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Ontario to Hillsboro?
The road trip is about 396.5 miles (638.1 km) and usually takes 06h 19m 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 196.4 miles from Ontario and 200.1 miles from Hillsboro.
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 83.5 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 MDT. 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 $69.26 one way or $138.53 round trip. Estimated CO2 is about 124.3 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Ontario and Hillsboro, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Ontario and Sunny near Hillsboro.
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 Ontario and Hillsboro. Straight-line distance: 313.07 mi (503.84 km).
#1 Ontario
City in Oregon, USA
| Population | 11,140 |
| Coordinates | 44.0265500, -116.9629400 |
| Altitude | 656 |
| Country | United States |
#2 Hillsboro
The most populous city in Washington County, Oregon.
| Population | 110,985 |
| Coordinates | 45.5228900, -122.9898300 |
| Altitude | 59 |
| Country | United States |
End: North 1st Avenue (-122.989765, 45.52289)
Estimated Travel Time
Distance: 638 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 12m |
| 40 mph (64.37 km/h) | 09h 54m |
| 50 mph (80.47 km/h) | 07h 55m |
| 60 mph (96.56 km/h) | 06h 36m |
| 70 mph (112.65 km/h) | 05h 39m |
| 80 mph (129 km/h) | 04h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $69.26 | $138.53 |
| Mid-grade | $5.34 | $74.68 | $149.36 |
| Premium | $5.57 | $77.87 | $155.74 |
| Diesel | $6.37 | $89.06 | $178.12 |
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.