Traveling from Salmon Creek to Federal Way is a straightforward 138.6-mile journey that typically takes about 2 hours and 41 minutes. Because this route is entirely within the Pacific Coast region of Washington, it serves as a highly efficient connection between these two points. You can easily complete this drive in a single day, making it an ideal choice for those who prefer to reach their destination without the need for an overnight stay. With an estimated fuel cost of $29, the trip is budget-friendly and serves as a reliable transit link. Whether you are commuting or heading out for a short trip, the focus here is on practicality and speed rather than a leisurely pace.
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
69.3 miles from Salmon Creek, WA
A natural place for your longest stop of the day
, about 1h 20m into the drive
.
Main Roads
Road
Distance
Duration
I 5
135.5 mi
2h 34m
South 320th Street
0.8 mi
2m
Pacific Highway South
0.5 mi
<1m
Northeast 20th Avenue
0.4 mi
<1m
Northeast Highway 99
0.4 mi
<1m
I 205
0.2 mi
<1m
Northeast 139th Street
<0.1 mi
<1m
Northeast Strand Road
<0.1 mi
<1m
Longest stretch:
I 5
— 135.5 mi, about 2h 34m
Turn-by-Turn Driving Directions
Step-by-step road directions between Salmon Creek, WA and Federal Way, WA.
1
Start on Northeast Strand Road
264 ft·51 sec·Northeast Strand Road
2
Turn left onto Northeast 20th Avenue
93 ft·5 sec·Northeast 20th Avenue
3
Turn right onto Northeast Highway 99
0.4 mi·43 sec·Northeast Highway 99
4
Continue on Northeast 20th Avenue
0.4 mi·53 sec·Northeast 20th Avenue
Use the straight lane.
5
Turn left onto Northeast 139th Street
374 ft·10 sec·Northeast 139th Street
Use the left lane.
6
Take the ramp
0.3 mi·35 sec
Toward I 5 North: Seattle
7
Merge onto I 205
0.2 mi·14 sec·I 205
Toward I 5 North: Seattle
8
Merge onto I 5
126 mi·2 hr 21 min·I 5
Use the straight / slight right lanes.
9
Keep slight right at fork onto I 5
10 mi·12 min·I 5
Use the slight right lane.
10
Take the exit
0.3 mi·51 sec
Exit 143Toward Federal Way, South 320th StreetUse the straight / slight right lanes.
11
Turn left onto South 320th Street
0.8 mi·2 min·South 320th Street
Use the left / straight / right lanes.
12
Turn right onto WA 99
0.5 mi·55 sec·Pacific Highway South
13
Turn right onto South 312th Street
158 ft·5 sec·South 312th Street
Use the right lane.
14
Turn right
24 ft·1 sec
15
Arrive at destination
Trip Plan
Since this is a relatively short drive, you have plenty of flexibility in your departure time to avoid the heaviest traffic patterns. Plan for at least one stop to stretch your legs, especially since the drive is nearly three hours long. Keep a close eye on the 135.5-mile stretch on I-5, as traffic density can fluctuate significantly on this major artery. If you find yourself needing to refuel, aim to do so before hitting the final segments on South 320th Street to ensure a smooth arrival. Prioritize a departure that works for your schedule, as the lack of complex navigation makes this an easy trip to manage on short notice.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 69.3 miles from Salmon Creek, WA, or about 1h 20m into the drive.
The longest continuous stretch on this route runs about 135.5 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 30 miles or 35m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 69.3 miles or 1h 20m 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 10m
Traffic, exits, and arrival timing usually matter more near Federal Way, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Salmon Creek, 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 Salmon Creek, WA
This is one driving day of about 138.6 miles and 2h 41m.
Your first comfortable stop window is around 30 miles from Salmon Creek, 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 5 for about 135.5 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 12
5 decision points cluster between mile 0.1 and 137.2 — 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|Northeast 20th Avenue
Turn left onto Northeast 20th Avenue
Navigation decision point
6
0.8 mi into trip|~2m in|Northeast 139th Street
Turn left onto Northeast 139th Street
Lane positioning matters here
Use the left lane.
6
126.9 mi into trip|~2h 25m in|I 5
Keep slight right at fork onto I 5
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
8
136.9 mi into trip|~2h 37m in
Take the exit toward Federal Way, South 320th Street
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 143
Toward Federal Way, South 320th Street
6
137.2 mi into trip|~2h 38m in|South 320th Street
Turn left onto South 320th Street
Lane positioning matters here
Use the left / straight / right lanes.
Fuel & Cost
Regular Gas
$29.01 one way
$58.02 round trip
$5.32/gal25.4 MPG avg49 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.58
$30.42
$60.84
premium
$5.77
$31.47
$62.95
diesel
$5.61
$30.60
$61.20
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$29
Meals
$25–$50
Total
$54–$79
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 48.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $15 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
41.6
0
$14.55
$6.65
Efficient EV
34.7
0
$12.13
$5.54
EV Truck/SUV
55.4
0
$19.40
$8.87
Gas CO2
48 kg
EV CO2
16 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 Apr 15, 2026
Origin
Salmon Creek, WA
Night
in Salmon Creek on Saturday
Local time
9:46 PM
PDT
Current temp
48°F
Unavailable
Live forecast
Destination
Federal Way, WA
Night
in Federal Way on Saturday
Local time
9:46 PM
PDT
Current temp
47°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
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
2h 41m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
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
~48 min detour
Free
near mile 138.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a quintessential interstate experience, as 98% of this drive is spent on major highways. You will spend the vast majority of your time on I-5, which accounts for a significant 135.5-mile stretch of your journey. The road feels like a classic high-speed transit corridor, designed for efficiency rather than winding, technical maneuvers. As you approach your destination, you will transition briefly off the interstate onto South 320th Street and Pacific Highway South to reach your final stop. It is a focused, highway-centric drive that gets you from point A to point B with minimal deviation.
98% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 135.5 mi on I 5.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on I 5 and South 320th Street. You will hit about 12 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.1 miles in near Northeast 20th Avenue.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 138.6 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (Northeast 20th Avenue): Navigation decision point; at 0.8 miles (Northeast 139th Street): Lane positioning matters here; at 126.9 miles (I 5): Highway fork - watch signs carefully. Lane positioning matters here.
Federal Way is a city in King County on the Puget Sound of Washington State. It is the home of the Pacific Bonsai Museum and Rhododendron Species Botanical Gardens. With a population of 96,000 (2016), Federal Way is one of Seattle's largest suburbs.
Doable as a same-day drive at 2h 41m. Total distance: 138.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 41m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 135.5 miles on I 5. The full list of main roads is in the Roads section above.
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 Federal Way, 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 (Northeast 20th Avenue): Navigation decision point; at 0.8 miles (Northeast 139th Street): Lane positioning matters here; at 126.9 miles (I 5): 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.
Yes. A round trip is manageable in a single day if you plan a break at Federal Way, WA before heading back.
