How far is Federal Way, WA from Union Gap, WA?
The driving distance from Federal Way, WA to Union Gap, WA is about 151.1 miles (243.2 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 101.5 miles (163.4 km).
- For a round trip, plan for roughly 05h 56m 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 58m.
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 Kittitas County, Washington, USA
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 Federal Way and Union Gap.
Turn-by-Turn Driving Directions
Step-by-step road directions between Federal Way and Union Gap.
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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
2669 ft · 1 min · Pacific Highway South
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4
Turn left onto South 320th Street
1.4 mi · 3 min · South 320th Street
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5
Continue on South Peasley Canyon Road
1 mi · 2 min · South Peasley Canyon Road
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6
Enter the roundabout and take exit 2 toward South Peasley Canyon Road
29 m · 2 sec · South Peasley Canyon Road
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7
Exit the roundabout onto South Peasley Canyon Road
1.2 km · 1 min · South Peasley Canyon Road
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8
Turn left onto West Valley Highway North
102 m · 11 sec · West Valley Highway North
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9
Take the ramp right toward WA 18 East, WA 167 North: Renton, North Bend
1154 ft · 28 sec
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10
Keep slight left to continue on WA 18 East
1261 ft · 31 sec
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11
Merge slight left onto State Route 18
24.4 mi · 31 min · State Route 18
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12
Continue on Snoqualmie Parkway
656 ft · 8 sec · Snoqualmie Parkway
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13
Take the exit slight right toward I 90 East: Spokane
3019 ft · 1 min
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14
Merge slight left
84.5 mi · 1 hr 33 min
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15
Take the exit slight right toward I 82 East, US 97 South: Yakima
36.3 mi · 41 min
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16
Take the exit slight right toward Valley Mall Boulevard, Union Gap
1567 ft · 38 sec
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17
Keep slight left to continue on Valley Mall Boulevard, Union Gap
77 m · 7 sec
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18
Enter the roundabout and take exit 2 toward East Valley Mall Boulevard
40 m · 2 sec · East Valley Mall Boulevard
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19
Exit the roundabout onto East Valley Mall Boulevard
134 m · 9 sec · East Valley Mall Boulevard
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20
Enter the roundabout and take exit 3 toward Rudkin Road
68 m · 4 sec · Rudkin Road
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21
Exit the roundabout onto Rudkin Road
1255 ft · 42 sec · Rudkin Road
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22
Turn right
45 m · 11 sec
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23
At the end of the road, turn left onto Main Street
141 m · 15 sec · Main Street
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24
Turn left
129 m · 31 sec
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25
Turn right
24 m · 6 sec
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26
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Federal Way and Union Gap.
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 90 East
Merge slight left
84.5 mi · 01h 33m
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.
Sunny leaving Federal Way and Partly Sunny near Union Gap.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Federal Way to Union Gap?
The road trip is about 151.1 miles (243.2 km) and usually takes 02h 58m 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?
Roslyn is a useful midpoint, sitting about 75.4 miles from Federal Way and 75.7 miles from Union Gap.
How much longer is the road route than the straight-line distance?
The direct path is about 101.5 miles (163.4 km), while the road route adds roughly 49.6 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 12:34 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.89 one way or $55.78 round trip. Estimated CO2 is about 47.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Federal Way and Partly Sunny near Union Gap.
Stop Ideas Near Roslyn
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 Roslyn.
Leavenworth, Washington
Leavenworth
Columbia Station
Stevens Pass, Washington
Flight Path Map
This map shows the direct air route between Federal Way and Union Gap. Straight-line distance: 101.53 mi (163.39 km).
#1 Federal Way
A city in King County, Washington.
| Population | 96,307 |
| Coordinates | 47.3223200, -122.3126200 |
| Altitude | 141 |
| Country | United States |
#2 Union Gap
City in Yakima County, Washington, United States
| Population | 6,160 |
| Coordinates | 46.5573500, -120.4750600 |
| Altitude | 300 |
| Country | United States |
End: Union Gap (-120.47506, 46.55735)
Estimated Travel Time
Distance: 243 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 02m |
| 40 mph (64.37 km/h) | 03h 46m |
| 50 mph (80.47 km/h) | 03h 01m |
| 60 mph (96.56 km/h) | 02h 31m |
| 70 mph (112.65 km/h) | 02h 09m |
| 80 mph (129 km/h) | 01h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $27.89 | $55.78 |
| Mid-grade | $5.57 | $29.67 | $59.34 |
| Premium | $5.77 | $30.76 | $61.52 |
| Diesel | $5.47 | $29.14 | $58.28 |
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 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.