How far is Union Gap, WA from Seattle, WA?
The driving distance from Union Gap, WA to Seattle, WA is about 146.6 miles (235.9 km), with a travel time of about 02h 20m by car.
- The straight-line flight distance is about 113.5 miles (182.7 km).
- For a round trip, plan for roughly 04h 41m 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 20m.
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.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Union Gap and Seattle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union Gap and Seattle.
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1
Start on the route
24 m · 8 sec
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2
Turn right
21 m · 7 sec
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3
Turn right onto East Ahtanum Road
40 m · 8 sec · East Ahtanum Road
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4
Turn right onto Main Street
108 m · 9 sec · Main Street
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5
Turn slight right
69 m · 8 sec
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6
Continue on Rudkin Road
1504 ft · 50 sec · Rudkin Road
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7
Enter the roundabout and take exit 1 toward East Valley Mall Boulevard
3 m · 1 sec · East Valley Mall Boulevard
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8
Exit the roundabout onto East Valley Mall Boulevard
140 m · 9 sec · East Valley Mall Boulevard
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9
Enter the roundabout and take exit 2 toward East Valley Mall Boulevard
33 m · 2 sec · East Valley Mall Boulevard
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10
Exit the roundabout onto East Valley Mall Boulevard
154 m · 10 sec · East Valley Mall Boulevard
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11
Enter the roundabout and take exit 1 toward the route
2 m · 1 sec
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12
Exit the roundabout
1050 ft · 26 sec
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13
Merge slight left
4.6 mi · 6 min
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14
Continue straight
31 mi · 34 min
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15
Keep slight left to continue on I 90 West
107.5 mi · 2 hr 2 min
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16
Continue on Mount Baker Ridge Tunnel
1.3 mi · 2 min · Mount Baker Ridge Tunnel
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17
Take the exit slight right toward I 5 North: Vancouver British Columbia, James Street, Madison Street
1.2 km · 1 min
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18
Keep slight left to continue on I 5 North: Vancouver British Columbia, Madison Street, Convention Center
881 ft · 22 sec
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19
Keep slight right to continue on Madison Street, Convention Place
1843 ft · 55 sec
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20
Turn left onto Madison Street
760 ft · 35 sec · Madison Street
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21
Turn left
9 m · 2 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Union Gap and Seattle.
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 West
Keep slight left to continue on I 90 West
107 mi · 02h 02m
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 Union Gap and Mostly Sunny near Seattle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union Gap to Seattle?
The road trip is about 146.6 miles (235.9 km) and usually takes 02h 20m 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 73.3 miles from Union Gap and 73.4 miles from Seattle.
How much longer is the road route than the straight-line distance?
The direct path is about 113.5 miles (182.7 km), while the road route adds roughly 33.1 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 1:48 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.05 one way or $54.11 round trip. Estimated CO2 is about 45.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Union Gap and Mostly Sunny near Seattle.
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 Union Gap and Seattle. Straight-line distance: 113.51 mi (182.67 km).
#1 Union Gap
City in Yakima County, Washington, United States
| Population | 6,160 |
| Coordinates | 46.5573500, -120.4750600 |
| Altitude | 300 |
| Country | United States |
#2 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 |
End: (-122.332143, 47.606309)
Estimated Travel Time
Distance: 236 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 53m |
| 40 mph (64.37 km/h) | 03h 39m |
| 50 mph (80.47 km/h) | 02h 55m |
| 60 mph (96.56 km/h) | 02h 26m |
| 70 mph (112.65 km/h) | 02h 05m |
| 80 mph (129 km/h) | 01h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $27.05 | $54.11 |
| Mid-grade | $5.57 | $28.78 | $57.56 |
| Premium | $5.77 | $29.84 | $59.67 |
| Diesel | $5.47 | $28.26 | $56.53 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.