Origin
Tacoma, WA
Late night in Tacoma on Saturday
Local time
2:57 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
$50
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 highway-focused drive. The longest uninterrupted segment is about 125.5 miles on I 90. At current regular gas prices, budget about $50.33 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 .
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.
Drive Character
This is a 5h 1m highway drive covering 244.3 miles, with most of the trip on I 90 and State Route 18. The longest continuous stretch is about 125.5 miles on I 90.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 32 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 90 is the longest continuous segment at about 125.5 miles.
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
How Hard Is This Drive?
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.
Critical Maneuvers
5 of 19 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
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...
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
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.
Halfway Point
Midpoint
About 122.2 mi from Tacoma, WA · 2h 23m into the drive
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.
Arriving in Coulee Dam, WA
The final approach into Coulee Dam, WA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Coulee Dam, WA.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$50.33 one way
$100.66 round trip
$5.23/gal
25.4 MPG avg
86 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.57 | $53.54 | $107.09 |
| premium | $5.77 | $55.51 | $111.01 |
| diesel | $5.47 | $52.58 | $105.16 |
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: 85.5 kg one way.
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
Late night in Coulee Dam on Saturday
Local time
2:57 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.
Frequently Asked Questions
The drive from Tacoma, WA to Coulee Dam, WA covers 244.3 miles and takes about 5h 1m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, State Route 18, Coulee Boulevard. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 122.2 miles from Tacoma, WA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $50.33 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
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.
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.
On the drive from Tacoma, WA to Coulee Dam, WA, road signs begin pointing toward Soap Lake along the way.
Hilly terrain with moderate elevation changes. The route ranges from 250 ft to 2,542 ft elevation with about 3,941 ft of total climbing. There is 1 notable high point along the way.
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, and USGS 3DEP for elevation. See our methodology for refresh cadence and limitations.
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