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Trip from Medical Lake, WA to Seattle, WA

Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards

Drive Time

5h

Distance

268.5 mi

432 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$56

one way

EV Charging

Unknown

Best Time to Leave

Save up to 41 min
4 AM
4h 47m ★
6 AM
5h 1m
8 AM
5h 28m
10 AM
5h 10m
12 PM
5h 7m
3 PM
5h 12m
5 PM
5h 26m
8 PM
4h 53m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Downtown Medical Lake, WA, WA

Medical Lake, WA

JOHN CALLERY

city in and county seat of King County, State of Washington, United States

Seattle, WA

Wikimedia Commons

Trip Overview

This 268.5-mile drive from Medical Lake, WA, to Seattle, WA, is a straightforward 5-hour journey, making it a very manageable day trip. The route is heavily focused on I-90, accounting for 97% of the drive, so expect a consistent highway experience. With an estimated fuel cost of $56, this trip is budget-friendly for a single day's travel. You'll be traversing the Pacific Coast region throughout, so the scenery will remain consistent. This is a practical choice if you're looking to get from point A to point B efficiently without needing an overnight stop.

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

134.3 miles from Medical Lake, WA

A natural place for your longest stop of the day , about 2h 31m into the drive .

Main Roads

Road Distance Duration
I 90 260.9 mi 4h 44m
South Salnave Road 4.1 mi 7m
South Lefevre Street 1.1 mi 2m
State Route 902 0.8 mi 1m
Madison Street 0.1 mi <1m
East Lake Street <0.1 mi <1m
Longest stretch: I 90 — 260.9 mi, about 4h 44m

Turn-by-Turn Driving Directions

Step-by-step road directions between Medical Lake, WA and Seattle, WA.

1

Start on East Lake Street

125 ft · 11 sec · East Lake Street
2

Turn left onto WA 902

1.1 mi · 2 min · South Lefevre Street
3

Continue on WA 902

0.8 mi · 1 min · State Route 902
4

Continue on WA 902

4.1 mi · 7 min · South Salnave Road
5

Take the ramp

0.2 mi · 28 sec
Toward Seattle
6

Merge onto I 90; US 395

42 mi · 45 min · I 90; US 395
7

Keep slight left at fork onto I 90

218 mi · 3 hr 59 min · I 90
Use the straight / slight right lanes.
8

Take the exit

0.7 mi · 1 min
Exit 2C Toward I 5 North: Vancouver British Columbia, James Street, Madison Street Use the straight / slight right lanes.
9

Keep slight left at fork

0.2 mi · 21 sec
Toward I 5 North: Vancouver British Columbia, Madison Street, Convention Center
10

Keep slight right at fork

0.3 mi · 54 sec
Toward Madison Street, Convention Place Use the slight right lane.
11

Turn left onto Madison Street

0.1 mi · 35 sec · Madison Street
Use the left / straight lanes.
12

Turn left

31 ft · 2 sec
13

Arrive at destination

Trip Plan

Given this is a 5-hour drive primarily on I-90, leaving in the morning will allow you to reach Seattle with plenty of daylight. You'll only need one stop for fuel or a break during the longest 260.9-mile stretch on I-90. With the estimated fuel cost at $56, keep an eye on your gauge as you approach the 200-mile mark, especially if you're driving a less fuel-efficient vehicle. This route is designed for efficiency, so enjoy the direct path and the relatively low amount of time spent on local roads.

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 134.3 miles from Medical Lake, WA, or about 2h 31m into the drive.
The longest continuous stretch on this route runs about 260.9 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 59 miles or 1h 9m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 134.3 miles or 2h 31m 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 6m

Traffic, exits, and arrival timing usually matter more near Seattle, WA than in the middle of the route.

Before You Leave

+

Open the route before leaving Medical Lake, 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 Medical Lake, WA

This is one driving day of about 268.5 miles and 5h.

Your first comfortable stop window is around 59 miles from Medical Lake, 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 260.9 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

city in Chelan County, Washington, United States

Mid-route town

Meal stop

Cashmere, WA

134 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.

Popular next leg

Cashmere, WA to Seattle, WA

137 mi · 2h 45m

Pacing Suggestions

Warden, WA

Fuel and coffee

A short stop after about 59 miles helps settle the day before fatigue starts building.

Cle Elum, WA

Meal break

The midpoint is around 134.3 miles from Medical Lake, WA, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before I 90 if your tank is already low. That segment runs about 260.9 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 9

5 decision points cluster between mile 48.7 and 268.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

6
48.7 mi into trip | ~58m in | I 90

Keep slight left at fork onto I 90

Highway fork - watch signs carefully. Lane positioning matters here

Use the straight / slight right lanes.
8
267.1 mi into trip | ~4h 57m in

Take the exit toward I 5 North: Vancouver British Columbia, James Street, Madison 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 2C Toward I 5 North: Vancouver British Columbia, J...
6
267.9 mi into trip | ~4h 58m in

Keep slight left at fork toward I 5 North: Vancouver British Columbia, Madison Street, Convention Center

Highway fork - watch signs carefully. Multiple destination signs - pick the right one

Toward I 5 North: Vancouver British Columbia, M...
8
268 mi into trip | ~4h 59m in

Keep slight right at fork toward Madison Street, Convention Place

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight right lane. Toward Madison Street, Convention Place
6
268.4 mi into trip | ~5h in | Madison Street

Turn left onto Madison Street

Lane positioning matters here

Use the left / straight lanes.

Fuel & Cost

Regular Gas

$56.19 one way

$112.39 round trip

$5.32/gal 25.4 MPG avg 94 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $5.58 $58.93 $117.87
premium $5.77 $60.97 $121.95
diesel $5.61 $59.28 $118.56

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: 93.9 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $28 in charging · 0 stops · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 80.6 0 $28.19 $12.89
Efficient EV 67.1 0 $23.49 $10.74
EV Truck/SUV 107.4 1 $37.59 $17.18

Gas CO2

94 kg

EV CO2

31 kg (67% 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.

Forecast as of Apr 15, 2026

Origin

Medical Lake, WA

Morning in Medical Lake on Sunday

Local time

7:40 AM

PDT

Current temp

44°F

Unavailable

Live forecast

Destination

Seattle, WA

Morning in Seattle on Sunday

Local time

7:40 AM

PDT

Current temp

49°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

5 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 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.

What kind of drive is this?

Expect a predominantly highway-focused drive, with 97% of your journey taking place on major interstates. The main artery for this trip is I-90, which will carry you for an impressive longest stretch of 260.9 miles. While the majority of the route is on I-90, you'll briefly touch South Salnave Road and South Lefevre Street at the beginning and end. This means the bulk of your time will be spent on high-speed, uninterrupted driving, offering a consistent pace for most of the 5-hour duration.

97% highway — fuel and pacing are the main things to plan.
13 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 260.9 mi on I 90.

How Hard Is This Drive?

6/10

This is a straightforward highway drive that stays mostly on I 90 and South Salnave Road. You will hit about 9 points where you need to pay attention to lane position or signs. The trickiest moment comes around 48.7 miles in near I 90.

Driving Effort 6/10

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 268.5 miles you will encounter 9 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 48.7 miles (I 90): Highway fork - watch signs carefully. Lane positioning matters here; at 267.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 267.9 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.

About the Cities

Arriving in Seattle, WA

Full guide →

Seattle, Washington sits at one of the most beautiful spots in the United States. Occupying a narrow isthmus between the Puget Sound and Lake Washington, it is the biggest city in the Pacific Northwest, with 780,000 people in Seattle and over four million people in the metro area. Seen from above, carpets of evergreen trees, pristine blue waters, and snowy white mountains surround the downtown's metallic skyscrapers, earning the city its nickname The Emerald City. On the ground, you will find a vibrant and cosmopolitan city. Next to the progressive downtown and the freewheeling feel of Capitol Hill, you can find a laid-back atmosphere in the districts to the north and ethnically diverse neighborhoods to the south.

City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 5h. Total distance: 268.5 miles.

Family Friendly

Moderate complexity with 1 natural rest stops along the way.

Solo Traveler

5h drive, comfortable solo distance.

First-Time Driver

Mostly highway driving (97%). Some complex stretches to watch for.

Frequently Asked Questions

The longest stretch is about 260.9 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 Seattle, 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 48.7 miles (I 90): Highway fork - watch signs carefully. Lane positioning matters here; at 267.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 267.9 miles: Highway fork - watch signs carefully. Multiple destination signs - pick the right one.

Not recommended in a single day. At 5.0 hours each way, a round trip means 10.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Seattle, WA before the return drive.

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, and EIA for fuel prices. See our methodology for refresh cadence and limitations.

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