Origin
Tacoma, WA
Morning in Tacoma on Saturday
Local time
11:28 AM
PDT
Current temp
59°F
Unavailable
Live forecast
Trip from Tacoma, WA to Coulee Dam, WA
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
5h 1m
Distance
244.3 mi
393 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$51
one way
EV Charging
Unknown
Best Time to Leave
4 AM
4h 48m
★
6 AM
5h 2m
8 AM
5h 29m
10 AM
5h 11m
12 PM
5h 8m
3 PM
5h 13m
5 PM
5h 27m
8 PM
4h 54m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Coulee Dam, WA
Wikimedia Commons
Trip Overview
The drive from Tacoma, WA to Coulee Dam, WA covers 244.3 miles and takes about 5h 1m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 90, State Route 18, Coulee Boulevard for much of the mileage, and the overall profile is mostly highway. The longest uninterrupted segment is about 125.5 miles on I 90. At current regular gas prices, budget about $51.13 one way before food or hotel costs.
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
122.2 miles from Tacoma, WA
A natural place for your longest stop of the day , about 2h 23m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 90 | 125.5 mi | 2h 16m |
| State Route 18 | 27.3 mi | 34m |
| Coulee Boulevard | 25.1 mi | 32m |
| WA 17 | 21.3 mi | 29m |
| WA 283 | 20 mi | 26m |
| I 5 | 7.7 mi | 9m |
| Coulee Corridor / Sunset Highway | 4.3 mi | 6m |
| WA 28 | 3.7 mi | 5m |
Longest stretch:
I 90
— 125.5 mi, about 2h 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Tacoma, WA and Coulee Dam, WA.
1
Start on South 11th Street
0.1 mi
·
29 sec
·
South 11th Street
2
Turn right onto Market Street
0.1 mi
·
31 sec
·
Market Street
3
Turn left onto South 13th Street
0.2 mi
·
35 sec
·
South 13th Street
4
Turn right onto I 705 SB Ramp
213 ft
·
11 sec
·
I 705 SB Ramp
5
Take the ramp
0.2 mi
·
21 sec
Toward Port of Tacoma
6
Merge onto I 705
0.8 mi
·
1 min
·
I 705
7
Keep slight right at fork
0.3 mi
·
44 sec
Toward I 5 North: Seattle
Use the straight / slight right lanes.
8
Keep slight left at fork
0.3 mi
·
34 sec
Toward I 5 North: Seattle
Use the slight left / slight right lanes.
9
Merge onto I 5
7.7 mi
·
9 min
·
I 5
Use the slight right lane.
10
Take the exit
0.5 mi
·
1 min
Exit 142A
Toward WA 18 East: Auburn, Muckleshoot Reservation
Use the straight / slight right lanes.
11
Merge onto WA 18
27 mi
·
34 min
·
State Route 18
Use the straight / slight right lanes.
12
Continue on WA 18
0.1 mi
·
8 sec
·
Snoqualmie Parkway
13
Take the exit
0.6 mi
·
1 min
Toward I 90 East: Spokane
14
Merge onto I 90
126 mi
·
2 hr 16 min
·
I 90
Use the straight / slight right lanes.
15
Take the exit
0.5 mi
·
1 min
Toward WA 283 North: Ephrata, Soap Lake
16
Continue on WA 281 Spur
0.1 mi
·
9 sec
·
Burke Spur
17
Turn right onto WA 283
20 mi
·
26 min
·
WA 283
18
Turn right onto 5th Avenue Southwest
392 ft
·
14 sec
·
5th Avenue Southwest
19
Turn left onto Alder Street Southwest
0.4 mi
·
55 sec
·
Alder Street Southwest
20
Continue on Alder Street Northwest
1.6 mi
·
2 min
·
Alder Street Northwest
21
Turn right onto WA 28
3.7 mi
·
5 min
·
WA 28
22
Turn left onto WA 17
21 mi
·
29 min
·
WA 17
23
At end of road, turn right onto US 2
4.3 mi
·
6 min
·
Coulee Corridor / Sunset Highway
24
Continue on WA 155
25 mi
·
32 min
·
Coulee Boulevard
25
Continue on WA 155
0.5 mi
·
56 sec
·
Grand Coulee Avenue
26
Continue on WA 155
0.5 mi
·
1 min
·
Midway Avenue
27
Continue on WA 155
1.7 mi
·
3 min
·
Coulee Corridor
28
Continue on WA 155
0.2 mi
·
25 sec
·
State Route 155
29
Continue on WA 155
0.2 mi
·
35 sec
·
Columbia Avenue
30
Turn right onto WA 155
0.2 mi
·
21 sec
·
State Highway 155
31
Continue on Roosevelt Way
0.2 mi
·
23 sec
·
Roosevelt Way
32
Arrive at destination
Marina Way
Trip Plan
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 122.2 miles from Tacoma, WA, or about 2h 23m into the drive.
The longest continuous stretch on this route runs about 125.5 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 54 miles or 1h 8m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 122.2 miles or 2h 23m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 59m
Traffic, exits, and arrival timing usually matter more near Coulee Dam, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Tacoma, WA 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 Tacoma, WA
This is one driving day of about 244.3 miles and 5h 1m.
Your first comfortable stop window is around 54 miles from Tacoma, WA.
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 I 90 for about 125.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
122 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 54 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 122.2 miles from Tacoma, WA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 125.5 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 195 decision points cluster between mile 0.1 and 9.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.1 mi into trip
|
~0m in
|
Market Street
Turn right onto Market Street
Navigation decision point
5
0.3 mi into trip
|
~1m in
|
South 13th Street
Turn left onto South 13th Street
Navigation decision point
7
1.5 mi into trip
|
~3m in
Keep slight right at fork toward I 5 North: Seattle
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 5 North: Seattle
7
1.8 mi into trip
|
~3m in
Keep slight left at fork toward I 5 North: Seattle
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward I 5 North: Seattle
8
9.8 mi into trip
|
~14m in
Take the exit toward WA 18 East: Auburn, Muckleshoot Reservation
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 142A
Toward WA 18 East: Auburn, Muckleshoot Reservat...
Fuel & Cost
Regular Gas
$51.13 one way
$102.26 round trip
$5.32/gal
25.4 MPG avg
86 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.58 | $53.62 | $107.24 |
| premium | $5.77 | $55.48 | $110.95 |
| diesel | $5.61 | $53.94 | $107.88 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$51
Meals
$25–$50
Total
$76–$101
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 85.5 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $26 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 73.3 | 0 | $25.65 | $11.73 |
| Efficient EV | 61.1 | 0 | $21.38 | $9.77 |
| EV Truck/SUV | 97.7 | 1 | $34.20 | $15.64 |
Gas CO2
85 kg
EV CO2
29 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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.
Destination
Coulee Dam, WA
Morning in Coulee Dam on Saturday
Local time
11:28 AM
PDT
Current temp
51°F
Unavailable
Live 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
8 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 1m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Klondike Gold Rush - Seattle Unit National Historical Park
National Historical Park
Seattle flourished during and after the Klondike Gold Rush. Merchants supplied people from around the world passing through this port city on their way to a remarkable adventure in the Yukon Territory...
19 mi from route
~49 min detour
Free
near mile 25.3
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
244.3 mi in 5h 1m, mostly highway — 125.5 mi of that is on I 90.
85% highway — fuel and pacing are the main things to plan.
32 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 125.5 mi on I 90.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on I 90 and State Route 18. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.1 miles in near Market Street.
Driving Effort
9/10
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 19 significant decision points across 244.3 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 0.1 miles (Market Street): Navigation decision point; at 0.3 miles (South 13th Street): Navigation decision point; at 1.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Hilly terrain with moderate elevation changes
2,542 ft
250 ft
Total Climb
3,941 ft
Total Descent
3,042 ft
Highest Point
2,542 ft
~69.8 mi in
Elevation Range
2,292 ft
Notable High Points
2,332 ft at ~139.6 miles
+846 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
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 Tacoma, WA to Coulee Dam, WA, road signs begin pointing toward Soap Lake along the way.
Soap Lake
163.7 mi in
|
~3h 8m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 5h 1m. Total distance: 244.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 1m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (85%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 125.5 miles on I 90. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Coulee Dam, WA 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 0.1 miles (Market Street): Navigation decision point; at 0.3 miles (South 13th Street): Navigation decision point; at 1.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Klondike Gold Rush - Seattle Unit National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.0 hours each way, a round trip means 10.1 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Coulee Dam, WA before the return drive.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, and NPS for national parks. See our methodology for refresh cadence and limitations.
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