How far is Marysville, WA from SeaTac, WA?
The driving distance from Marysville, WA to SeaTac, WA is about 46.1 miles (74.2 km), with a travel time of about 01h 02m by car.
- The straight-line flight distance is about 42 miles (67.6 km).
- For a round trip, plan for roughly 02h 04m 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 01h 02m.
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.
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Marysville and SeaTac.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marysville and SeaTac.
-
1
Start on State Avenue
2860 ft · 1 min · State Avenue
-
2
Enter the roundabout and take exit 1 toward State Route 529
21 m · 1 sec · State Route 529
-
3
Exit the roundabout onto State Route 529
31 m · 2 sec · State Route 529
-
4
Take the ramp straight toward I 5
1551 ft · 38 sec
-
5
Merge slight left
40 mi · 50 min
-
6
Take the exit slight right toward Boeing Access Road, East Marginal Way
1455 ft · 35 sec
-
7
Turn right onto Boeing Access Road
1986 ft · 44 sec · Boeing Access Road
-
8
Keep slight left to continue on Pacific Highway South
66 m · 7 sec
-
9
Continue straight
38 m · 3 sec
-
10
Turn slight left onto Tukwila International Boulevard
3 mi · 5 min · Tukwila International Boulevard
-
11
Continue on International Boulevard
1.2 mi · 2 min · International Boulevard
-
12
Turn left onto South 170th Street
1073 ft · 32 sec · South 170th Street
-
13
Turn right onto 32nd Avenue South
949 ft · 36 sec · 32nd Avenue South
-
14
Turn right
16 m · 6 sec
-
15
Turn right
43 m · 10 sec
-
16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Marysville and SeaTac.
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
Merge slight left
40 mi · 00h 50m
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.
Sunny leaving Marysville and Mostly Cloudy near SeaTac.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marysville to SeaTac?
The road trip is about 46.1 miles (74.2 km) and usually takes 01h 02m 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 23.1 miles from Marysville and 23.1 miles from SeaTac.
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 4.1 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 4:26 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $8.53 one way or $17.06 round trip. Estimated CO2 is about 14.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Marysville and Mostly Cloudy near SeaTac.
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 Marysville and SeaTac. Straight-line distance: 42.02 mi (67.63 km).
#1 Marysville
The most populous city in Snohomish County, Washington.
| Population | 71,392 |
| Coordinates | 48.0517600, -122.1770800 |
| Altitude | 6 |
| Country | United States |
#2 SeaTac
Airport in SeaTac, Washington, USA
| Population | 28,904 |
| Coordinates | 47.4484600, -122.2921700 |
| Altitude | 80 |
| Country | United States |
End: SeaTac (-122.29217, 47.44846)
Estimated Travel Time
Distance: 74 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 32m |
| 40 mph (64.37 km/h) | 01h 09m |
| 50 mph (80.47 km/h) | 00h 55m |
| 60 mph (96.56 km/h) | 00h 46m |
| 70 mph (112.65 km/h) | 00h 39m |
| 80 mph (129 km/h) | 00h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $8.53 | $17.06 |
| Mid-grade | $5.57 | $9.07 | $18.15 |
| Premium | $5.77 | $9.41 | $18.81 |
| Diesel | $5.47 | $8.91 | $17.82 |
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.