How far is Hillsboro, OR from Riddle, OR?
The driving distance from Hillsboro, OR to Riddle, OR is about 207.8 miles (334.5 km), with a travel time of about 04h 15m by car.
- The straight-line flight distance is about 178.6 miles (287.5 km).
- For a round trip, plan for roughly 08h 30m 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 15m.
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.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Hillsboro and Riddle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hillsboro and Riddle.
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1
Start on North 1st Avenue
1.1 km · 2 min · North 1st Avenue
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2
Continue on Southwest Hillsboro Highway
7.7 mi · 10 min · Southwest Hillsboro Highway
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3
Continue on Southwest Hillsboro Highway
1.8 mi · 3 min · Southwest Hillsboro Highway
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4
At the end of the road, turn left onto Southwest Scholls Ferry Road
1.2 km · 1 min · Southwest Scholls Ferry Road
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5
Turn right onto Southwest Scholls Sherwood Road
4.3 mi · 6 min · Southwest Scholls Sherwood Road
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6
Continue on Southwest Scholls Sherwood Road
3033 ft · 55 sec · Southwest Scholls Sherwood Road
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7
At the end of the road, turn right onto Southwest Roy Rogers Road
1 mi · 2 min · Southwest Roy Rogers Road
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8
Keep slight right to continue on Southwest Roy Rogers Road
1526 ft · 41 sec · Southwest Roy Rogers Road
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9
Continue on Southwest Tualatin Sherwood Road
1.9 mi · 4 min · Southwest Tualatin Sherwood Road
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10
Turn right onto Southwest 124th Avenue
1.6 mi · 3 min · Southwest 124th Avenue
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11
Continue on Basalt Creek Parkway
1.1 km · 1 min · Basalt Creek Parkway
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12
Turn right onto Southwest Grahams Ferry Road
2175 ft · 48 sec · Southwest Grahams Ferry Road
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13
Turn left onto Southwest Day Street
2991 ft · 54 sec · Southwest Day Street
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14
Turn right onto Southwest Boones Ferry Road
1235 ft · 32 sec · Southwest Boones Ferry Road
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15
Take the ramp slight right toward I 5 South: Salem
182.2 mi · 3 hr 33 min
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16
Take the exit slight right toward Tri CIty, Riddle
913 ft · 23 sec · Highway #001FV - Riddle Road Connection #4
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17
Turn right onto Pruner Road
1 km · 1 min · Pruner Road
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18
Continue on Riddle Bypass Road
1.8 mi · 3 min · Riddle Bypass Road
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19
Turn left onto Main Street
2012 ft · 1 min · Main Street
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20
Turn left onto 5th Avenue
569 ft · 19 sec · 5th Avenue
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21
Turn right onto E Street
541 ft · 24 sec · E Street
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22
Arrive at your destination
0 m · 1 sec · E Street
Car Route Details
A richer read on the saved driving route between Hillsboro and Riddle.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 5 South
Take the ramp slight right toward I 5 South: Salem
182 mi · 03h 33m
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 Hillsboro and Mostly Sunny near Riddle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Hillsboro to Riddle?
The road trip is about 207.8 miles (334.5 km) and usually takes 04h 15m 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?
Coburg is a useful midpoint, sitting about 103.9 miles from Hillsboro and 103.9 miles from Riddle.
How much longer is the road route than the straight-line distance?
The direct path is about 178.6 miles (287.5 km), while the road route adds roughly 29.2 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 8:30 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.29 one way or $72.58 round trip. Estimated CO2 is about 65.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Hillsboro and Mostly Sunny near Riddle.
Stop Ideas Near Coburg
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Surface Lot
Springfield Animal Control
Harrisburg City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Coburg.
Eugene–Springfield
Eugene, OR
University of Oregon
Corvallis, Oregon
Flight Path Map
This map shows the direct air route between Hillsboro and Riddle. Straight-line distance: 178.67 mi (287.54 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 Riddle
Statement or question or phrase having a double or veiled meaning, put forth as a puzzle to be solved
| Population | 1,216 |
| Coordinates | 42.9509500, -123.3642300 |
| Altitude | 212 |
| Country | United States |
End: Riddle (-123.36423, 42.95095)
Estimated Travel Time
Distance: 334 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 55m |
| 40 mph (64.37 km/h) | 05h 11m |
| 50 mph (80.47 km/h) | 04h 09m |
| 60 mph (96.56 km/h) | 03h 27m |
| 70 mph (112.65 km/h) | 02h 58m |
| 80 mph (129 km/h) | 02h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.95 | $36.29 | $72.58 |
| Mid-grade | $5.34 | $39.13 | $78.26 |
| Premium | $5.57 | $40.80 | $81.60 |
| Diesel | $6.37 | $46.66 | $93.33 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.