How far is Union, OR from Hillsboro, OR?
The driving distance from Union, OR to Hillsboro, OR is about 295 miles (474.7 km), with a travel time of about 04h 52m by car.
- The straight-line flight distance is about 249.7 miles (401.8 km).
- For a round trip, plan for roughly 09h 44m 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 04h 52m.
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.
City in Oregon, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Driving Route Map
The map below follows the saved road route between Union and Hillsboro.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union and Hillsboro.
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1
Start on East Beakman Street
21 m · 3 sec · East Beakman Street
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2
Turn right onto North Main Street
3079 ft · 52 sec · North Main Street
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3
Continue on La Grande-Baker Highway
10.3 mi · 15 min · La Grande-Baker Highway
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4
Take the ramp left
1135 ft · 28 sec
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5
Merge slight left onto Old Oregon Trail Highway
96.7 mi · 1 hr 45 min · Old Oregon Trail Highway
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6
Continue on Columbia River Highway
158.3 mi · 2 hr 56 min · Columbia River Highway
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7
Continue on Banfield Freeway
6.8 mi · 9 min · Banfield Freeway
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8
Keep slight left to continue on I 5 South: Salem, OMSI, City Center
1906 ft · 32 sec
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9
Keep slight left to continue on I 5 South: Beaverton, Salem
80 m · 5 sec
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10
Merge slight left
1.1 mi · 2 min
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11
Take the exit slight left toward I 405, US 26: Beaverton
1804 ft · 31 sec · Stadium Freeway
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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 US 26 West: Beaverton
5 mi · 7 min
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14
Continue on Northwest Sunset Highway
3.1 mi · 4 min · Northwest Sunset Highway
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15
Take the exit slight right toward Cornell Road, Bethany Boulevard
1157 ft · 26 sec
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16
Keep slight left
62 m · 10 sec
-
17
Turn left onto Northwest Cornell Road
1.7 mi · 3 min · Northwest Cornell Road
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18
Continue on Northeast Cornell Road
5.1 mi · 11 min · Northeast Cornell Road
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19
Continue on Northeast Cornell Road
1.1 km · 1 min · Northeast Cornell Road
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20
Turn slight right
70 m · 11 sec
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21
Turn right onto East Main Street
1.2 km · 3 min · East Main Street
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22
Turn right onto North 1st Avenue
24 m · 3 sec · North 1st Avenue
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23
Arrive at your destination
0 m · 1 sec · North 1st Avenue
Car Route Details
A richer read on the saved driving route between Union and Hillsboro.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Columbia River Highway
Continue on Columbia River Highway
158 mi · 02h 56m
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.
Rain leaving Union and Light Rain Likely near Hillsboro.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union to Hillsboro?
The road trip is about 295 miles (474.7 km) and usually takes 04h 52m 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?
Arlington is a useful midpoint, sitting about 145.6 miles from Union and 149.3 miles from Hillsboro.
How much longer is the road route than the straight-line distance?
The direct path is about 249.7 miles (401.8 km), while the road route adds roughly 45.3 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 7:16 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $51.54 one way or $103.08 round trip. Estimated CO2 is about 92.5 kg one way.
What should you check before leaving?
Before you leave, expect Rain around Union and Light Rain Likely near Hillsboro.
Stop Ideas Near Arlington
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 Arlington.
Wishram
The Dalles, Oregon
Bingen – White Salmon
Hood River, Oregon
Flight Path Map
This map shows the direct air route between Union and Hillsboro. Straight-line distance: 249.67 mi (401.81 km).
#1 Union
Township of Union County, New Jersey
| Population | 2,207 |
| Coordinates | 45.2084700, -117.8652100 |
| Altitude | 850 |
| 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: 475 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 49m |
| 40 mph (64.37 km/h) | 07h 22m |
| 50 mph (80.47 km/h) | 05h 53m |
| 60 mph (96.56 km/h) | 04h 54m |
| 70 mph (112.65 km/h) | 04h 12m |
| 80 mph (129 km/h) | 03h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $51.54 | $103.08 |
| Mid-grade | $5.34 | $55.57 | $111.14 |
| Premium | $5.57 | $57.94 | $115.88 |
| Diesel | $6.37 | $66.27 | $132.54 |
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 · Apr 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.