How far is Federal Way, WA from Sudden Valley, WA?
The driving distance from Federal Way, WA to Sudden Valley, WA is about 107.6 miles (173.2 km), with a travel time of about 02h 21m by car.
- The straight-line flight distance is about 96.8 miles (155.8 km).
- For a round trip, plan for roughly 04h 42m 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 02h 21m.
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.
The most populous city in Snohomish County, Washington.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Federal Way and Sudden Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Federal Way and Sudden Valley.
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1
Start on the route
7 m · 7 sec
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2
Turn left onto South 312th Street
48 m · 8 sec · South 312th Street
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3
Turn right onto Pacific Highway South
2.5 mi · 4 min · Pacific Highway South
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4
Turn right onto South 272nd Street
1.1 km · 2 min · South 272nd Street
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5
Take the ramp left toward I-5 North: Seattle
2172 ft · 55 sec
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6
Merge slight left
93.5 mi · 1 hr 52 min
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7
Take the exit slight right toward Alger
1204 ft · 30 sec
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8
Turn right onto Lake Samish Road
1.2 km · 2 min · Lake Samish Road
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9
Continue on Alger Cain Lake Road
2.8 mi · 5 min · Alger Cain Lake Road
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10
Continue on Cain Lake Road
2.1 mi · 4 min · Cain Lake Road
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11
At the end of the road, turn left onto South Lake Whatcom Boulevard
3.5 mi · 6 min · South Lake Whatcom Boulevard
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12
Turn left onto Sudden Valley Drive
51 m · 11 sec · Sudden Valley Drive
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13
Continue on Sudden Valley Drive
1751 ft · 1 min · Sudden Valley Drive
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14
Continue on Sudden Valley Drive
1.1 km · 3 min · Sudden Valley Drive
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15
Turn left onto Lost Fork Lane
896 ft · 41 sec · Lost Fork Lane
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16
Turn right onto Tawny Circle
85 m · 7 sec · Tawny Circle
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17
Arrive at your destination
0 m · 1 sec · Tawny Circle
Car Route Details
A richer read on the saved driving route between Federal Way and Sudden Valley.
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
Merge slight left
93.5 mi · 01h 52m
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 Sunny leaving Federal Way and Partly Sunny near Sudden Valley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Federal Way to Sudden Valley?
The road trip is about 107.6 miles (173.2 km) and usually takes 02h 21m 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?
Marysville is a useful midpoint, sitting about 53.8 miles from Federal Way and 53.9 miles from Sudden Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 96.8 miles (155.8 km), while the road route adds roughly 10.8 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 1:48 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.89 one way or $39.77 round trip. Estimated CO2 is about 33.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Federal Way and Partly Sunny near Sudden Valley.
Stop Ideas Near Marysville
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 Marysville.
Everett Station
Stanwood station
Monroe, Washington
Monroe (Eastbound), WA
Flight Path Map
This map shows the direct air route between Federal Way and Sudden Valley. Straight-line distance: 96.78 mi (155.76 km).
#1 Federal Way
A city in King County, Washington.
| Population | 96,307 |
| Coordinates | 47.3223200, -122.3126200 |
| Altitude | 141 |
| Country | United States |
#2 Sudden Valley
Census designated place
| Population | 6,441 |
| Coordinates | 48.7228900, -122.3465500 |
| Altitude | 205 |
| Country | United States |
End: Sudden Valley (-122.34655, 48.72289)
Estimated Travel Time
Distance: 173 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 35m |
| 40 mph (64.37 km/h) | 02h 41m |
| 50 mph (80.47 km/h) | 02h 09m |
| 60 mph (96.56 km/h) | 01h 47m |
| 70 mph (112.65 km/h) | 01h 32m |
| 80 mph (129 km/h) | 01h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $19.89 | $39.77 |
| Mid-grade | $5.57 | $21.15 | $42.31 |
| Premium | $5.77 | $21.93 | $43.86 |
| Diesel | $5.47 | $20.77 | $41.55 |
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 · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.