Renton to Millwood is 286.4 miles and takes about 5h 18m via I 90 and WA 900, with a fuel budget near $60 and enough daylight to finish in a day. This trip stays within Washington state, traveling from the Pacific Coast region to another part of the Pacific Coast. Expect a route that is almost entirely highway, making for straightforward driving. With only one recommended stop, it's a good option if you're looking for a direct way to get between these two points.
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
143.2 miles from Renton, WA
A natural place for your longest stop of the day
, about 2h 40m into the drive
.
Main Roads
Road
Distance
Duration
I 90
277 mi
5h 2m
WA 900
6.2 mi
8m
North 3rd Street
0.6 mi
1m
Airport Way
0.4 mi
1m
North Argonne Road
0.4 mi
<1m
Sunset Boulevard North
0.3 mi
<1m
North Mullan Road
0.2 mi
<1m
Logan Avenue South
0.1 mi
<1m
Longest stretch:
I 90
— 277 mi, about 5h 2m
Traffic on I-90
Hour-of-day weekday pattern from 99 FHWA count stations on your route.
Peak
3 PM
~2,111 veh/hr typical
· worst 2,743
Quietest
2 AM
~121 veh/hr
Peak-to-quiet ratio
17.4×
busier at peak than in the quiet hours
12a6anoon6p11p
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 Renton, WA and Millwood, WA.
1
Start on this road
63 ft·5 sec·this road
2
Turn left
71 ft·8 sec
3
Turn left
98 ft·9 sec
4
Turn right onto Rainier Avenue South
520 ft·12 sec·Rainier Avenue South
5
Turn right onto Airport Way
0.4 mi·1 min·Airport Way
6
Continue on Logan Avenue South
0.1 mi·21 sec·Logan Avenue South
Use the straight / slight right lanes.
7
Turn right onto North 3rd Street
0.6 mi·1 min·North 3rd Street
Use the straight lane.
8
Turn left onto WA 900
0.2 mi·36 sec·Sunset Boulevard North
Use the left lane.
9
Keep slight right at fork onto WA 900
0.2 mi·23 sec·Sunset Boulevard North
10
Take the ramp onto WA 900
6.2 mi·8 min·WA 900
Toward I 405 North, WA 900 EastUse the straight / slight right lanes.
11
Take the exit
0.2 mi·31 sec
Exit 11Toward I 90: Seattle, SpokaneUse the slight right lane.
12
Keep slight right at fork
0.4 mi·45 sec
Toward I 90 East: SpokaneUse the slight right lane.
13
Merge onto I 90
268 mi·4 hr 51 min·I 90
Use the straight / slight right lanes.
14
Merge onto I 90; US 2; US 395
9.3 mi·11 min·I 90; US 2; US 395
15
Take the exit
0.4 mi·1 min
Toward Millwood
16
Turn left onto North Mullan Road
0.2 mi·28 sec·North Mullan Road
17
Continue on North Argonne Road
0.4 mi·58 sec·North Argonne Road
18
Arrive at destination
North Argonne Road
Trip Plan
Given the 5h 18m estimated drive time, leaving in the morning is your best bet to complete this trip in a single day. The longest stretch is 277 miles on I 90, so plan a mid-drive break around the 2.5 to 3-hour mark to stretch your legs. Fuel will cost an estimated $60, so ensure you have a full tank before departing Renton, and consider topping off if you see prices dipping near your destination. There's only one recommended stop, but with the drive being manageable in one day, you have flexibility to add more breaks if needed.
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 143.2 miles from Renton, WA, or about 2h 40m into the drive.
The longest continuous stretch on this route runs about 277 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 12m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 143.2 miles or 2h 40m 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 19m
Traffic, exits, and arrival timing usually matter more near Millwood, WA than in the middle of the route.
Before You Leave
+
Open the route before leaving Renton, 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 Renton, WA
This is one driving day of about 286.4 miles and 5h 18m.
Your first comfortable stop window is around 63 miles from Renton, 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 277 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 13
5 decision points cluster between mile 0.7 and 8.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.7 mi into trip|~1m in|North 3rd Street
Turn right onto North 3rd Street
Lane positioning matters here
Use the straight lane.
5
1.5 mi into trip|~3m in|WA 900 / Sunset Boulevard North
Keep slight right at fork onto WA 900 / Sunset Boulevard North
Highway fork - watch signs carefully
6
1.7 mi into trip|~4m in|WA 900
Take the ramp onto WA 900 toward I 405 North, WA 900 East
Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 405 North, WA 900 East
8
7.8 mi into trip|~12m in
Take the exit toward I 90: Seattle, Spokane
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 11
Toward I 90: Seattle, Spokane
7
8.1 mi into trip|~12m in
Keep slight right at fork toward I 90 East: Spokane
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 90 East: Spokane
Fuel & Cost
Regular Gas
$55.79 one way
$111.58 round trip
$4.95/gal25.4 MPG avg100 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.18
$58.45
$116.91
premium
$5.39
$60.79
$121.57
diesel
$4.80
$54.08
$108.16
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$56
Meals
$25–$50
Total
$81–$106
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 100.2 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $30 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
85.9
1
$30.07
$13.75
Efficient EV
71.6
0
$25.06
$11.46
EV Truck/SUV
114.6
1
$40.10
$18.33
Gas CO2
100 kg
EV CO2
34 kg (66% 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
Renton, WA
Morning
in Renton on Sunday
Local time
9:38 AM
PDT
Current temp
77°F
Sunny
W 6 mph0% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Destination
Millwood, WA
Morning
in Millwood on Sunday
Local time
9:38 AM
PDT
Current temp
90°F
Patchy Smoke
SW 6 mph7% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
Red Flag Warning
Red Flag Warning issued July 17 at 11:13AM PDT until July 17 at 9:00PM PDT by NWS Spokane WA
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
13 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 18m 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...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly highway cruising, with 99% of the 286.4 miles on major roads. You'll spend the vast majority of your time on I 90, with a longest stretch of 277 miles on this interstate. The transition to surface roads, specifically North 3rd Street, happens near the end of your drive. Be prepared for frequent exits and merges as you approach your destination after hundreds of miles of consistent highway travel.
99% highway — fuel and pacing are the main things to plan.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 277 mi on I 90.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 90 and WA 900. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.7 miles in near North 3rd Street.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 286.4 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 0.7 miles (North 3rd Street): Lane positioning matters here; at 1.5 miles (WA 900 / Sunset Boulevard North): Highway fork - watch signs carefully; at 1.7 miles (WA 900): Lane positioning matters here. Multiple destination signs - pick the right one.
Renton is a city in King County, Washington south of Bellevue and north of Kent. It is a quiet suburb of Seattle at the base of Lake Washington. Renton is primarily known as the site of the Boeing 737 plant, where the popular commercial jetliner is built. Renton is also notable for being the resting place of rock legend Jimi Hendrix.
Its relatively inexpensive property prices make it a solid choice of stay while visiting Seattle, and the downtown area has many quiet charms of its own.
Top landmarks
•Renton History Museum — Museum in the city of Renton in the state of Washington, United States.
Doable as a same-day drive at 5h 18m. Total distance: 286.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 18m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (99%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 277 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 21 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 Millwood, 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. There are 21 rest areas along the route for bathroom stops.
The main spots that need attention: at 0.7 miles (North 3rd Street): Lane positioning matters here; at 1.5 miles (WA 900 / Sunset Boulevard North): Highway fork - watch signs carefully; at 1.7 miles (WA 900): Lane positioning matters here. Multiple destination signs - pick the right one.
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 5.3 hours each way, a round trip means 10.6 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Millwood, WA before the return drive.
