How far is SeaTac, WA from Marysville, WA?
The driving distance from SeaTac, WA to Marysville, WA is about 47.6 miles (76.6 km), with a travel time of about 00h 58m by car.
- The straight-line flight distance is about 42 miles (67.6 km).
- For a round trip, plan for roughly 01h 57m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Washington
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between SeaTac and Marysville.
Turn-by-Turn Driving Directions
Step-by-step road directions between SeaTac and Marysville.
-
1
Start on the route
43 m · 16 sec
-
2
Turn left
16 m · 9 sec
-
3
Turn left onto 32nd Avenue South
949 ft · 40 sec · 32nd Avenue South
-
4
At the end of the road, turn left onto South 170th Street
1028 ft · 34 sec · South 170th Street
-
5
Turn right onto International Boulevard
1.4 km · 2 min · International Boulevard
-
6
Take the ramp slight right toward WA 518 East
1871 ft · 50 sec
-
7
Merge slight left
1.1 km · 54 sec
-
8
Take the exit slight left toward I 5 North: Seattle
2243 ft · 55 sec
-
9
Continue straight
44.3 mi · 55 min
-
10
Take the exit slight right toward WA 528 East: Marysville
1114 ft · 30 sec
-
11
Turn right onto 4th Street
1621 ft · 38 sec · 4th Street
-
12
Turn right onto State Avenue
7 m · 1 sec · State Avenue
-
13
Arrive at your destination
0 m · 1 sec · State Avenue
Car Route Details
A richer read on the saved driving route between SeaTac and Marysville.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 5 North
Continue straight
44.3 mi · 00h 55m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Cloudy leaving SeaTac and Sunny near Marysville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from SeaTac to Marysville?
The road trip is about 47.6 miles (76.6 km) and usually takes 00h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Shoreline is a useful midpoint, sitting about 23.8 miles from SeaTac and 23.9 miles from Marysville.
How much longer is the road route than the straight-line distance?
The direct path is about 42 miles (67.6 km), while the road route adds roughly 5.6 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 4:32 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.79 one way or $17.58 round trip. Estimated CO2 is about 14.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around SeaTac and Sunny near Marysville.
Stop Ideas Near Shoreline
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Shoreline.
Edmonds station
Seattle (Ferry - Pier 69), Washington
King Street Station
Everett Station
Flight Path Map
This map shows the direct air route between SeaTac and Marysville. Straight-line distance: 42.02 mi (67.63 km).
#1 SeaTac
Airport in SeaTac, Washington, USA
| Population | 28,904 |
| Coordinates | 47.4484600, -122.2921700 |
| Altitude | 80 |
| Country | United States |
#2 Marysville
The most populous city in Snohomish County, Washington.
| Population | 71,392 |
| Coordinates | 48.0517600, -122.1770800 |
| Altitude | 6 |
| Country | United States |
End: State Avenue (-122.177018, 48.05176)
Estimated Travel Time
Distance: 77 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 35m |
| 40 mph (64.37 km/h) | 01h 11m |
| 50 mph (80.47 km/h) | 00h 57m |
| 60 mph (96.56 km/h) | 00h 47m |
| 70 mph (112.65 km/h) | 00h 40m |
| 80 mph (129 km/h) | 00h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $8.79 | $17.58 |
| Mid-grade | $5.57 | $9.35 | $18.71 |
| Premium | $5.77 | $9.70 | $19.39 |
| Diesel | $5.47 | $9.18 | $18.37 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Washington · May 06, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.