Origin
Marysville, WA
Late night in Marysville on Sunday
Local time
3:57 AM
PDT
Current temp
56°F
Unavailable
Live forecast
Trip from Marysville, WA to West Lake Sammamish, WA
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
54m
Distance
40.5 mi
65 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$8
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 50m
★
6 AM
0h 54m
8 AM
1h 3m
10 AM
0h 58m
12 PM
0h 57m
3 PM
0h 58m
5 PM
1h 3m
8 PM
0h 52m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Marysville, WA
Wikimedia Commons
West Lake Sammamish, WA
Wikimedia Commons
Trip Overview
Marysville, WA to West Lake Sammamish, WA is 40.5 miles and takes about 54m via I 5 and I 405, with a fuel budget near $8 and enough daylight to finish in a day. This highway-focused drive stays within Washington and the Pacific Coast region, making it a straightforward trip. Most of the journey utilizes major interstates, so expect consistent speeds and a fairly direct path. It's a short enough drive that you can easily complete it in a single day, offering plenty of flexibility for when you want to depart.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 405 | 18 mi | 22m |
| I 5 | 15.2 mi | 18m |
| I 90 | 3.1 mi | 3m |
| West Lake Sammamish Parkway Southeast | 0.6 mi | 1m |
| State Avenue | 0.5 mi | 1m |
| 177th Avenue Southeast | <0.1 mi | <1m |
| Southeast 40th Place | <0.1 mi | <1m |
| State Route 529 | <0.1 mi | <1m |
Longest stretch:
I 405
— 18 mi, about 22m
Turn-by-Turn Driving Directions
Step-by-step road directions between Marysville, WA and West Lake Sammamish, WA.
1
Start on WA 529
0.5 mi
·
1 min
·
State Avenue
2
Enter roundabout onto State Route 529
70 ft
·
1 sec
·
State Route 529
3
Continue on State Route 529
100 ft
·
1 sec
·
State Route 529
4
Take the ramp
0.3 mi
·
37 sec
Toward I 5
5
Merge onto I 5
15 mi
·
18 min
·
I 5
Use the straight / slight right lanes.
6
Take the exit
0.9 mi
·
1 min
Exit 182
Toward I 405 South: Bellevue, Renton
Use the straight / slight right lanes.
7
Merge onto I 405
0.9 mi
·
1 min
·
I 405
8
Keep slight right at fork onto I 405
17 mi
·
21 min
·
I 405
Use the straight / slight right lanes.
9
Take the exit
0.5 mi
·
1 min
Exit 11
Toward I 90: Spokane, Seattle
Use the slight right lane.
10
Keep slight left at fork
0.5 mi
·
1 min
Toward I 90 East: Spokane
Use the slight left lane.
11
Merge onto I 90
3.1 mi
·
3 min
·
I 90
12
Take the exit
0.2 mi
·
24 sec
Exit 13
Toward West Lake Sammamish Parkway, Lakemont Boulevard Southeast
Use the slight right lane.
13
Keep slight left at fork
0.6 mi
·
1 min
Toward West Lake Sammamish Parkway Southeast
14
Turn straight onto West Lake Sammamish Parkway Southeast
0.1 mi
·
21 sec
·
West Lake Sammamish Parkway Southeast
15
Continue on West Lake Sammamish Parkway Southeast
115 ft
·
3 sec
·
West Lake Sammamish Parkway Southeast
16
Continue on West Lake Sammamish Parkway Southeast
249 ft
·
8 sec
·
West Lake Sammamish Parkway Southeast
17
Enter roundabout onto West Lake Sammamish Parkway Southeast
105 ft
·
2 sec
·
West Lake Sammamish Parkway Southeast
18
Continue on West Lake Sammamish Parkway Southeast
0.3 mi
·
54 sec
·
West Lake Sammamish Parkway Southeast
19
Turn right onto 177th Avenue Southeast
350 ft
·
18 sec
·
177th Avenue Southeast
20
Turn right onto Southeast 40th Place
236 ft
·
10 sec
·
Southeast 40th Place
21
Arrive at destination
Southeast 40th Place
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
20 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 40.5 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 20.2 miles from Marysville, WA, which is a good place for a longer meal and fuel stop.
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 145 decision points cluster between mile 16.1 and 39 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
16.1 mi into trip
|
~20m in
Take the exit toward I 405 South: Bellevue, Renton
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 182
Toward I 405 South: Bellevue, Renton
6
17.9 mi into trip
|
~23m in
|
I 405
Keep slight right at fork onto I 405
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
34.9 mi into trip
|
~44m in
Take the exit toward I 90: Spokane, Seattle
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: Spokane, Seattle
7
35.4 mi into trip
|
~45m in
Keep slight left at fork toward I 90 East: Spokane
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 90 East: Spokane
8
39 mi into trip
|
~50m in
Take the exit toward West Lake Sammamish Parkway, Lakemont Boulevard Southeast
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 13
Toward West Lake Sammamish Parkway, Lakemont Bo...
Fuel & Cost
Regular Gas
$8.48 one way
$16.95 round trip
$5.32/gal
25.4 MPG avg
14 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.58 | $8.89 | $17.78 |
| premium | $5.77 | $9.20 | $18.39 |
| diesel | $5.61 | $8.94 | $17.88 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$8
Estimated CO2 emission: 14.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 12.2 | 0 | $4.25 | $1.94 |
| Efficient EV | 10.1 | 0 | $3.54 | $1.62 |
| EV Truck/SUV | 16.2 | 0 | $5.67 | $2.59 |
Gas CO2
14 kg
EV CO2
5 kg (64% 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.
Destination
West Lake Sammamish, WA
Late night in West Lake Sammamish on Sunday
Local time
3:57 AM
PDT
Current temp
63°F
Unavailable
Live forecast
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
7 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
54m 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.
What kind of drive is this?
This route is predominantly a highway-focused drive, with 91% of the journey taking place on major interstates like I 5 and I 405. You'll experience a consistent driving pace for most of the 40.5 miles. The longest uninterrupted stretch you'll encounter is about 18 miles on I 405, allowing for a good period of steady travel without frequent exits. While primarily interstate, the overall feel is that of moving through a connected urban and suburban corridor.
91% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 18 mi on I 405.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 405 and I 5. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 16.1 miles in.
Driving Effort
10/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 14 decision points packed into just 40.5 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 54m.
Where does it get tricky?
The main spots that need attention: at 16.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 17.9 miles (I 405): Highway fork - watch signs carefully. Lane positioning matters here; at 34.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
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.
Between Marysville, WA and West Lake Sammamish, WA, road signs point toward Renton and Seattle.
Renton
16.1 mi in
|
~20m
Seattle
34.9 mi in
|
~44m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 54m. Total distance: 40.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
54m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (91%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 18 miles on I 405. 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 West Lake Sammamish, WA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 16.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 17.9 miles (I 405): Highway fork - watch signs carefully. Lane positioning matters here; at 34.9 miles: Exit ramp - move to the correct lane early. 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.
Yes. A round trip is manageable in a single day if you plan a break at West Lake Sammamish, WA before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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