How far is Federal Way, WA from Grand Mound, WA?
The driving distance from Federal Way, WA to Grand Mound, WA is about 57.4 miles (92.4 km), with a travel time of about 01h 13m by car.
- The straight-line flight distance is about 49.5 miles (79.6 km).
- For a round trip, plan for roughly 02h 27m 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 13m.
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.
City in the state of Washington
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Patchy Fog
Driving Route Map
The map below follows the saved road route between Federal Way and Grand Mound.
Turn-by-Turn Driving Directions
Step-by-step road directions between Federal Way and Grand Mound.
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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 · 6 sec · South 312th Street
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3
Turn left onto Pacific Highway South
1.8 mi · 3 min · Pacific Highway South
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4
Turn left onto 16th Avenue South
2572 ft · 1 min · 16th Avenue South
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5
Turn left onto State Route 18
152 m · 14 sec · State Route 18
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6
Take the exit slight right toward I 5 North, I 5 South: Seattle, Tacoma
633 ft · 16 sec
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7
Keep slight right to continue on I 5 South: Tacoma
1763 ft · 45 sec
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8
Merge slight left
7.5 mi · 9 min
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9
Keep slight right
45.4 mi · 54 min
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10
Take the exit slight right toward US 12 West: Aberdeen, Tenino
2279 ft · 58 sec
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11
Turn right
1108 ft · 31 sec
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12
Turn left onto Old Highway 99 Southwest
631 ft · 14 sec · Old Highway 99 Southwest
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13
Enter the roundabout and take exit 2 toward Large Round About
25 m · 5 sec · Old Highway 99 Southwest
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14
Exit the rotary onto Old Highway 99 Southwest
1.3 km · 2 min · Old Highway 99 Southwest
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15
Turn left
30 m · 9 sec
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16
Turn right
89 m · 22 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Federal Way and Grand Mound.
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 South
Keep slight right
45.4 mi · 00h 54m
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 Cloudy leaving Federal Way and Patchy Fog near Grand Mound.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Federal Way to Grand Mound?
The road trip is about 57.4 miles (92.4 km) and usually takes 01h 13m 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?
DuPont is a useful midpoint, sitting about 28.6 miles from Federal Way and 28.8 miles from Grand Mound.
How much longer is the road route than the straight-line distance?
The direct path is about 49.5 miles (79.6 km), while the road route adds roughly 7.9 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 4:02 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.62 one way or $21.25 round trip. Estimated CO2 is about 18 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Federal Way and Patchy Fog near Grand Mound.
Stop Ideas Near DuPont
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 DuPont.
Centennial Station
Tacoma Dome Station
Centralia station
Tukwila station
Flight Path Map
This map shows the direct air route between Federal Way and Grand Mound. Straight-line distance: 49.45 mi (79.58 km).
#1 Federal Way
A city in King County, Washington.
| Population | 96,307 |
| Coordinates | 47.3223200, -122.3126200 |
| Altitude | 141 |
| Country | United States |
#2 Grand Mound
City in Thurston County, Washington, United States
| Population | 2,981 |
| Coordinates | 46.7878800, -123.0112500 |
| Altitude | 51 |
| Country | United States |
End: Grand Mound (-123.01125, 46.78788)
Estimated Travel Time
Distance: 92 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 54m |
| 40 mph (64.37 km/h) | 01h 26m |
| 50 mph (80.47 km/h) | 01h 08m |
| 60 mph (96.56 km/h) | 00h 57m |
| 70 mph (112.65 km/h) | 00h 49m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $10.62 | $21.25 |
| Mid-grade | $5.57 | $11.30 | $22.60 |
| Premium | $5.77 | $11.72 | $23.43 |
| Diesel | $5.47 | $11.10 | $22.20 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.