Union, OR to Terrebonne, OR is 284.6 miles and takes about 5h 41m via Old Oregon Trail Highway and Sherman Highway, with a fuel budget near $57 and enough daylight to finish in a day. This route stays within Oregon, moving from the Pacific Coast region to the same region. Expect a drive primarily on surface roads, offering a more local feel than a freeway-bound trip. It’s a good option if you prefer a less hurried pace and want to see more of the landscape between these two points. The drive is manageable in a single day, making it a straightforward option for a quick transit.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
142.3 miles from Union, OR
A natural place for your longest stop of the day
, about 2h 38m into the drive
.
Main Roads
Road
Distance
Duration
Old Oregon Trail Highway
96.7 mi
1h 45m
Sherman Highway
67.7 mi
1h 29m
Columbia River Highway
62.9 mi
1h 7m
The Dalles-California Highway
44.1 mi
56m
La Grande-Baker Highway
10.3 mi
15m
Southwest 4th Street
1 mi
3m
North Main Street
0.6 mi
<1m
E Street
0.4 mi
<1m
Longest stretch:
Old Oregon Trail Highway
— 96.7 mi, about 1h 45m
Traffic on I-84
Hour-of-day weekday pattern from 22 FHWA count stations on your route.
Peak
2 PM
~602 veh/hr typical
· worst 997
Quietest
2 AM
~68 veh/hr
Peak-to-quiet ratio
8.9×
busier at peak than in the quiet hours
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Averaged across 52 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 Union, OR and Terrebonne, OR.
1
Start on OR 203
69 ft·3 sec·East Beakman Street
2
Turn right onto OR 203; OR 237
0.6 mi·52 sec·North Main Street
3
Continue on OR 203
10 mi·15 min·La Grande-Baker Highway
4
Take the ramp onto I 84
0.2 mi·27 sec·I 84
5
Merge onto I 84
97 mi·1 hr 45 min·Old Oregon Trail Highway
Use the straight / slight right lanes.
6
Continue on I 84; US 30
63 mi·1 hr 7 min·Columbia River Highway
7
Take the exit
0.2 mi·37 sec
Toward US 97: Yakima, Bend
8
Turn left onto US 97
55 mi·1 hr 12 min·Sherman Highway
9
Continue on US 97
0.4 mi·52 sec·E Street
10
Turn straight onto US 97
12 mi·16 min·Sherman Highway
11
Continue on US 97
25 mi·29 min·The Dalles-California Highway
12
Continue on US 97
0.2 mi·32 sec·Northeast 6th Street
13
Turn left onto US 26; US 97
264 ft·12 sec·4th Street
Use the left / straight / right lanes.
14
Continue on US 26; US 97
1.0 mi·3 min·Southwest 4th Street
15
Continue on US 26; US 97
20 mi·27 min·The Dalles-California Highway
16
Turn left onto Central Avenue
277 ft·14 sec·Central Avenue
17
Turn right onto 11th Street
329 ft·9 sec·11th Street
18
Arrive at destination
11th Street
Trip Plan
Given the 5h 41m duration, leaving Union, OR in the morning is recommended to maximize daylight. With only one stop suggested, you have flexibility in planning your break. Keep an eye on your fuel levels, especially during the 96.7-mile stretch on Old Oregon Trail Highway, as services might be more spread out on these surface roads. The $57 fuel cost is an estimate, so check current prices before you depart. Since this is a single-day drive, you can adapt your schedule based on traffic or any brief stops you decide to make along the way.
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 142.3 miles from Union, OR, or about 2h 38m into the drive.
The longest continuous stretch on this route runs about 96.7 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 63 miles or 1h 13m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 142.3 miles or 2h 38m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 32m
Traffic, exits, and arrival timing usually matter more near Terrebonne, OR than in the middle of the route.
Before You Leave
+
Open the route before leaving Union, 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 Union, OR
This is one driving day of about 284.6 miles and 5h 41m.
Your first comfortable stop window is around 63 miles from Union, 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 Old Oregon Trail Highway for about 96.7 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 8
5 decision points cluster between mile 10.8 and 284.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
10.8 mi into trip|~16m in|I 84
Take the ramp onto I 84
Navigation decision point
5
11.1 mi into trip|~16m in|I 84 / Old Oregon Trail Highway
Merge onto I 84 / Old Oregon Trail Highway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
170.7 mi into trip|~3h 9m in
Take the exit toward US 97: Yakima, Bend
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 97: Yakima, Bend
5
263.9 mi into trip|~5h 9m in|US 26; US 97 / 4th Street
Turn left onto US 26; US 97 / 4th Street
Lane positioning matters here
Use the left / straight / right lanes.
5
284.6 mi into trip|~5h 41m in|11th Street
Turn right onto 11th Street
Navigation decision point
Fuel & Cost
Regular Gas
$50.43 one way
$100.86 round trip
$4.50/gal25.4 MPG avg100 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.82
$54.01
$108.01
premium
$5.04
$56.49
$112.99
diesel
$4.80
$53.74
$107.48
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$50
Meals
$25–$50
Total
$75–$100
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 99.6 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $30 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
85.4
1
$29.88
$13.66
Efficient EV
71.2
0
$24.90
$11.38
EV Truck/SUV
113.8
1
$39.84
$18.21
Gas CO2
100 kg
EV CO2
33 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 Jul 18, 2026
Origin
Union, OR
Morning
in Union on Sunday
Local time
9:38 AM
PDT
Current temp
93°F
Patchy Smoke
NW 14 mph1% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 2:01PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
Red Flag Warning
Red Flag Warning issued July 17 at 10:23AM PDT until July 18 at 10:00PM PDT by NWS Pendleton OR
Destination
Terrebonne, OR
Morning
in Terrebonne on Sunday
Local time
9:38 AM
PDT
Current temp
89°F
Areas Of Smoke
NW 13 mph0% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 2:01PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
Red Flag Warning
Red Flag Warning issued July 17 at 10:23AM PDT until July 18 at 10:00PM PDT by NWS Pendleton OR
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
4 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
5h 41m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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 trip is entirely on surface roads, meaning you won't encounter any highway driving. You'll cruise for 96.7 miles on Old Oregon Trail Highway, which is the longest continuous stretch. The route is characterized by rural cruising, with fewer exits and a more consistent speed. Be prepared for a consistent pace without the rapid acceleration and deceleration often found on interstates.
Only 0% highway — the rest is turn-by-turn surface driving.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 96.7 mi on Old Oregon Trail Highway.
How Hard Is This Drive?
3/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes around 10.8 miles in near I 84.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 41m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 10.8 miles (I 84): Navigation decision point; at 11.1 miles (I 84 / Old Oregon Trail Highway): Merge point - match speed before joining. Lane positioning matters here; at 170.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
3,805 ft293 ft
Total Climb
4,603 ft
Total Descent
4,530 ft
Highest Point
3,805 ft
~40.7 mi in
Elevation Range
3,512 ft
Notable High Points
3,805 ft at ~40.7 miles+862 ft prominence
3,096 ft at ~223.6 miles+620 ft prominence
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 Union, OR to Terrebonne, OR, road signs begin pointing toward Bend along the way.
The longest stretch is about 96.7 miles on Old Oregon Trail Highway. The full list of main roads is in the Roads section above.
Yes — we found about 19 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.
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 19 rest areas along the route for bathroom stops.
The main spots that need attention: at 10.8 miles (I 84): Navigation decision point; at 11.1 miles (I 84 / Old Oregon Trail Highway): Merge point - match speed before joining. Lane positioning matters here; at 170.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Not recommended in a single day. At 5.7 hours each way, a round trip means 11.4 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Terrebonne, OR before the return drive.
