How far is Federal Way, WA from Martha Lake, WA?
The driving distance from Federal Way, WA to Martha Lake, WA is about 41.2 miles (66.3 km), with a travel time of about 00h 55m by car.
- The straight-line flight distance is about 36.7 miles (59 km).
- For a round trip, plan for roughly 01h 51m 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 55m.
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 eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
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 Federal Way and Martha Lake.
Turn-by-Turn Driving Directions
Step-by-step road directions between Federal Way and Martha Lake.
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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
36.2 mi · 45 min
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7
Take the exit slight right toward 164th Street Southwest
2282 ft · 56 sec
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8
Keep slight right to continue on 164th Street Southwest, Mill Creek
75 m · 7 sec
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9
Turn straight onto 164th Street Southwest
1 km · 2 min · 164th Street Southwest
-
10
Turn left
110 m · 16 sec
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11
Turn right onto East Shore Drive
109 m · 12 sec · East Shore Drive
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12
Turn right onto Pitner Drive
130 m · 19 sec · Pitner Drive
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13
Arrive at your destination
0 m · 1 sec · Pitner Drive
Car Route Details
A richer read on the saved driving route between Federal Way and Martha Lake.
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
36.2 mi · 00h 45m
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 Sunny near Martha Lake.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Federal Way to Martha Lake?
The road trip is about 41.2 miles (66.3 km) and usually takes 00h 55m 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?
Seattle is a useful midpoint, sitting about 20.6 miles from Federal Way and 20.6 miles from Martha Lake.
How much longer is the road route than the straight-line distance?
The direct path is about 36.7 miles (59 km), while the road route adds roughly 4.5 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 4:38 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.59 one way or $15.18 round trip. Estimated CO2 is about 12.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Federal Way and Sunny near Martha Lake.
Stop Ideas Near Seattle
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Tukwila Community Center
Renton City Human Services
Renton City Hall
Renton Police Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Seattle.
King Street Station
Seattle (Ferry - Pier 69), Washington
Tukwila station
Edmonds station
Flight Path Map
This map shows the direct air route between Federal Way and Martha Lake. Straight-line distance: 36.69 mi (59.04 km).
#1 Federal Way
A city in King County, Washington.
| Population | 96,307 |
| Coordinates | 47.3223200, -122.3126200 |
| Altitude | 141 |
| Country | United States |
#2 Martha Lake
Census designated place
| Population | 15,473 |
| Coordinates | 47.8509300, -122.2393000 |
| Altitude | 143 |
| Country | United States |
End: Martha Lake (-122.2393, 47.85093)
Estimated Travel Time
Distance: 66 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 22m |
| 40 mph (64.37 km/h) | 01h 01m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 41m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $7.59 | $15.18 |
| Mid-grade | $5.57 | $8.07 | $16.14 |
| Premium | $5.77 | $8.37 | $16.74 |
| Diesel | $5.47 | $7.93 | $15.85 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.