How far is Seattle, WA from Sudden Valley, WA?
The driving distance from Seattle, WA to Sudden Valley, WA is about 85.9 miles (138.3 km), with a travel time of about 01h 52m by car.
- The straight-line flight distance is about 77.2 miles (124.2 km).
- For a round trip, plan for roughly 03h 45m 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 52m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Driving Route Map
The map below follows the saved road route between Seattle and Sudden Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Sudden Valley.
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1
Start on the route
9 m · 8 sec
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2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
916 ft · 39 sec · 4th Avenue
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4
Turn right onto University Street
653 ft · 26 sec · University Street
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5
Take the ramp straight toward I 5 North
1631 ft · 42 sec
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6
Merge slight right
74.7 mi · 1 hr 29 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 Seattle 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 right
74.7 mi · 01h 29m
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.
Partly Sunny leaving Seattle 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 Seattle to Sudden Valley?
The road trip is about 85.9 miles (138.3 km) and usually takes 01h 52m 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?
Smokey Point is a useful midpoint, sitting about 42.9 miles from Seattle and 43 miles from Sudden Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 77.2 miles (124.2 km), while the road route adds roughly 8.7 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 2:44 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.86 one way or $31.71 round trip. Estimated CO2 is about 26.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Seattle and Partly Sunny near Sudden Valley.
Stop Ideas Near Smokey Point
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 Smokey Point.
Stanwood station
Everett Station
Skagit Transportation Center
Monroe, Washington
Flight Path Map
This map shows the direct air route between Seattle and Sudden Valley. Straight-line distance: 77.16 mi (124.17 km).
#1 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| 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: 138 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 51m |
| 40 mph (64.37 km/h) | 02h 08m |
| 50 mph (80.47 km/h) | 01h 43m |
| 60 mph (96.56 km/h) | 01h 25m |
| 70 mph (112.65 km/h) | 01h 13m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $15.86 | $31.71 |
| Mid-grade | $5.57 | $16.87 | $33.74 |
| Premium | $5.77 | $17.49 | $34.97 |
| Diesel | $5.47 | $16.57 | $33.13 |
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.