How far is Federal Way, WA from Castle Rock, WA?
The driving distance from Federal Way, WA to Castle Rock, WA is about 95.4 miles (153.5 km), with a travel time of about 01h 55m by car.
- The straight-line flight distance is about 77.6 miles (124.9 km).
- For a round trip, plan for roughly 03h 50m 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 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.
City in Thurston County, Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Federal Way and Castle Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Federal Way and Castle Rock.
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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
84 mi · 1 hr 37 min
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10
Take the exit slight right toward WA 504: Castle Rock
2013 ft · 52 sec
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11
Turn right onto Huntington Avenue North
1894 ft · 1 min · Huntington Avenue North
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12
Turn slight right onto Front Avenue Northwest
578 ft · 16 sec · Front Avenue Northwest
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13
Continue on Front Avenue Southwest
1174 ft · 33 sec · Front Avenue Southwest
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14
Arrive at your destination
0 m · 1 sec · Front Avenue Southwest
Car Route Details
A richer read on the saved driving route between Federal Way and Castle Rock.
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
84 mi · 01h 37m
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 Federal Way and Mostly Sunny near Castle Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Federal Way to Castle Rock?
The road trip is about 95.4 miles (153.5 km) and usually takes 01h 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?
Tenino is a useful midpoint, sitting about 47.7 miles from Federal Way and 47.7 miles from Castle Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 77.6 miles (124.9 km), while the road route adds roughly 17.8 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 2:40 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.64 one way or $35.27 round trip. Estimated CO2 is about 29.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Federal Way and Mostly Sunny near Castle Rock.
Stop Ideas Near Tenino
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Lacey - City Hall Parking
Olympia City Hall
Lacey Community Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Tenino.
Centennial Station
Centralia station
Tacoma Dome Station
Kelso Multimodal Transportation Center
Flight Path Map
This map shows the direct air route between Federal Way and Castle Rock. Straight-line distance: 77.63 mi (124.94 km).
#1 Federal Way
A city in King County, Washington.
| Population | 96,307 |
| Coordinates | 47.3223200, -122.3126200 |
| Altitude | 141 |
| Country | United States |
#2 Castle Rock
City in Cowlitz County, Washington, United States
| Population | 2,304 |
| Coordinates | 46.2751100, -122.9076100 |
| Altitude | 18 |
| Country | United States |
End: Castle Rock (-122.90761, 46.27511)
Estimated Travel Time
Distance: 153 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 10m |
| 40 mph (64.37 km/h) | 02h 23m |
| 50 mph (80.47 km/h) | 01h 54m |
| 60 mph (96.56 km/h) | 01h 35m |
| 70 mph (112.65 km/h) | 01h 21m |
| 80 mph (129 km/h) | 01h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $17.64 | $35.27 |
| Mid-grade | $5.57 | $18.76 | $37.52 |
| Premium | $5.77 | $19.45 | $38.90 |
| Diesel | $5.47 | $18.42 | $36.85 |
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 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.