Terrebonne to West Slope is 145.3 miles and takes about 3h 33m via Warm Springs Highway, Mount Hood Highway, and The Dalles-California Highway, with a fuel budget near $27 and enough daylight to finish in a day. This single-day trip connects two points within Oregon's Pacific Coast region. Expect a drive primarily on surface roads, offering a more grounded experience compared to interstate travel. With only one recommended stop and a relatively short duration, it's a manageable excursion for those looking for a straightforward drive.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
72.7 miles from Terrebonne, OR
A natural place for your longest stop of the day
, about 1h 44m into the drive
.
Hour-of-day weekday pattern from 26 FHWA count stations on your route.
Peak
2 PM
~4,360 veh/hr typical
Quietest
2 AM
~449 veh/hr
Peak-to-quiet ratio
9.7×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 105 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Terrebonne, OR and West Slope, OR.
1
Start on 11th Street
119 ft·5 sec·11th Street
2
Turn right onto C Avenue
271 ft·8 sec·C Avenue
3
Turn right onto US 97
20 mi·28 min·The Dalles-California Highway
4
Continue on US 26; US 97
0.9 mi·2 min·5th Street
5
Continue on US 26
13 mi·19 min·Northwest Warm Springs Highway
Use the straight / right lanes.
6
Continue on US 26
47 mi·1 hr 4 min·Warm Springs Highway
7
Continue on US 26
31 mi·43 min·Mount Hood Highway
8
Continue on US 26
0.7 mi·2 min·Proctor Boulevard
9
Continue on US 26
9.1 mi·13 min·Mount Hood Highway
10
Continue on US 26
0.6 mi·58 sec·Southeast Mount Hood Highway
11
Continue on Southeast Burnside Road
1.7 mi·3 min·Southeast Burnside Road
12
Turn right onto Northwest Fairview Drive
0.2 mi·30 sec·Northwest Fairview Drive
13
Turn right onto Southeast 223rd Avenue
1.2 mi·2 min·Southeast 223rd Avenue
14
Turn left onto Northeast Glisan Street
0.4 mi·53 sec·Northeast Glisan Street
Use the left lane.
15
Turn slight right
376 ft·13 sec
16
Turn straight onto Northeast Fairview Parkway
0.9 mi·1 min·Northeast Fairview Parkway
Use the straight / slight right lanes.
17
Take the ramp
0.3 mi·52 sec
Toward I 84 West: Portland
18
Merge onto I 84; US 30
4.8 mi·6 min·Columbia River Highway
Use the straight / slight right lanes.
19
Continue on I 84; US 30
6.8 mi·9 min·Banfield Freeway
Toward PortlandUse the straight / slight right lanes.
20
Keep slight left at fork
0.4 mi·32 sec
Toward I 5 South: Salem, OMSI, City Center
21
Keep slight left at fork
261 ft·4 sec
Toward I 5 South: Beaverton, SalemUse the straight / slight right lanes.
22
Merge onto I 5
1.1 mi·1 min·I 5
23
Take the exit onto Stadium Freeway
0.3 mi·30 sec·Stadium Freeway
Toward I 405, US 26: Beaverton
24
Merge onto I 405
0.7 mi·59 sec·Stadium Freeway
Use the straight / slight right lanes.
25
Take the exit onto US 26
3.0 mi·4 min·US 26
Exit 1DToward US 26 West: BeavertonUse the straight / slight right lanes.
26
Take the exit
0.4 mi·33 sec
Exit 71AToward OR 8: Canyon RoadUse the straight / slight right lanes.
27
Keep slight left at fork
0.2 mi·19 sec
Toward OR 8: Canyon Road, West SlopeUse the slight left / straight lanes.
28
Continue on OR 8
1.2 mi·2 min·Southwest Canyon Road
29
Turn right
130 ft·9 sec
30
Arrive at destination
Trip Plan
To make the most of this 145.3-mile drive, consider leaving in the morning to allow for flexibility. With a total duration of around 3 hours and 33 minutes, it’s a comfortable day trip. You'll want to budget about $27 for fuel and keep in mind there's only one recommended stop along the way. The longest stretch without a break is 46.7 miles on Warm Springs Highway, so plan accordingly if you prefer more frequent pauses. Make sure your vehicle is fueled up before you depart Terrebonne, as you'll be on more rural roads for a significant portion of the trip.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 72.7 miles from Terrebonne, OR, or about 1h 44m into the drive.
The longest continuous stretch on this route runs about 46.7 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 32 miles or 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 72.7 miles or 1h 44m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 51m
Traffic, exits, and arrival timing usually matter more near West Slope, OR than in the middle of the route.
Before You Leave
+
Open the route before leaving Terrebonne, OR so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Terrebonne, OR
This is one driving day of about 145.3 miles and 3h 33m.
Your first comfortable stop window is around 32 miles from Terrebonne, OR.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Warm Springs Highway for about 46.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 17
5 decision points cluster between mile 138.1 and 144 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
138.1 mi into trip|~3h 21m in
Keep slight left at fork toward I 5 South: Salem, OMSI, City Center
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 5 South: Salem, OMSI, City Center
8
138.5 mi into trip|~3h 22m in
Keep slight left at fork toward I 5 South: Beaverton, Salem
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 5 South: Beaverton, Salem
7
140.6 mi into trip|~3h 25m in|US 26
Take the exit onto US 26 toward US 26 West: Beaverton
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 1D
Toward US 26 West: Beaverton
7
143.6 mi into trip|~3h 29m in
Take the exit toward OR 8: Canyon Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 71A
Toward OR 8: Canyon Road
8
144 mi into trip|~3h 30m in
Keep slight left at fork toward OR 8: Canyon Road, West Slope
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / straight lanes.
Toward OR 8: Canyon Road, West Slope
Fuel & Cost
Regular Gas
$29.63 one way
$59.25 round trip
$5.18/gal25.4 MPG avg51 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.48
$31.37
$62.74
premium
$5.74
$32.81
$65.61
diesel
$6.18
$35.35
$70.69
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$30
Meals
$25–$50
Total
$55–$80
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 50.8 kg one way.
Prices: EIA weekly data, 2026-10-12.
Driving Electric?
About $15 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
43.6
0
$15.26
$6.97
Efficient EV
36.3
0
$12.71
$5.81
EV Truck/SUV
58.1
0
$20.34
$9.30
Gas CO2
51 kg
EV CO2
17 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Oct 17, 2026
Origin
Terrebonne, OR
Morning
in Terrebonne on Sunday
Local time
7:20 AM
PDT
Current temp
66°F
Partly Sunny
N 2 to 10 mph0% chanceLive forecast
Destination
West Slope, OR
Morning
in West Slope on Sunday
Local time
7:20 AM
PDT
Current temp
65°F
Chance Light Rain then Partly Sunny
NW 3 mph25% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
1 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 33m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This route is mostly surface roads, with only a 9% highway share. You'll spend the bulk of your time on local routes, with the longest continuous stretch covering 46.7 miles on Warm Springs Highway. Expect a rural cruising feel for most of the drive, transitioning away from highway speeds fairly early on. The profile suggests you won't be dealing with significant grades or complex urban merging.
Only 9% highway — the rest is turn-by-turn surface driving.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 46.7 mi on Warm Springs Highway.
How Hard Is This Drive?
10/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 138.1 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 17 significant decision points across 145.3 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 138.1 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 138.5 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 140.6 miles (US 26): Exit ramp - move to the correct lane early. Lane positioning matters here.
Elevation Profile
Hilly terrain with moderate elevation changes
3,996 ft200 ft
Total Climb
2,610 ft
Total Descent
5,117 ft
Highest Point
3,996 ft
~83.1 mi in
Elevation Range
3,796 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Terrebonne, OR to West Slope, OR, road signs begin pointing toward Portland along the way.
Doable as a same-day drive at 3h 33m. Total distance: 145.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 33m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 46.7 miles on Warm Springs Highway. The full list of main roads is in the Roads section above.
Yes — we found about 5 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at West Slope, OR before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 5 rest areas along the route for bathroom stops.
The main spots that need attention: at 138.1 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 138.5 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 140.6 miles (US 26): Exit ramp - move to the correct lane early. Lane positioning matters here.
Possible but tiring. At 3.6 hours each way, an in-and-out day trip would put you behind the wheel for 7.1 hours — manageable with a long break at West Slope, OR, but most travelers stay overnight.
