How far is Seattle, WA from Union Gap, WA?
The driving distance from Seattle, WA to Union Gap, WA is about 146.6 miles (236 km), with a travel time of about 02h 47m by car.
- The straight-line flight distance is about 113.5 miles (182.7 km).
- For a round trip, plan for roughly 05h 35m 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 47m.
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 Seattle and Union Gap.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Union Gap.
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1
Start on the route
9 m · 8 sec
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2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
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4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
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5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
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6
Continue straight
3180 ft · 1 min
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7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
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8
Keep slight left to continue on I 90 East: Bellevue, Spokane
2257 ft · 55 sec
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9
Merge slight left
1.6 km · 1 min
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10
Keep slight left to continue on Mount Baker Ridge Tunnel
107 mi · 2 hr · Mount Baker Ridge Tunnel
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11
Take the exit slight right toward I 82 East, US 97 South: Yakima
36.3 mi · 41 min
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12
Take the exit slight right toward Valley Mall Boulevard, Union Gap
1567 ft · 38 sec
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13
Keep slight left to continue on Valley Mall Boulevard, Union Gap
77 m · 7 sec
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14
Enter the roundabout and take exit 2 toward East Valley Mall Boulevard
40 m · 2 sec · East Valley Mall Boulevard
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15
Exit the roundabout onto East Valley Mall Boulevard
134 m · 9 sec · East Valley Mall Boulevard
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16
Enter the roundabout and take exit 3 toward Rudkin Road
68 m · 4 sec · Rudkin Road
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17
Exit the roundabout onto Rudkin Road
1255 ft · 42 sec · Rudkin Road
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18
Turn right
45 m · 11 sec
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19
At the end of the road, turn left onto Main Street
141 m · 15 sec · Main Street
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20
Turn left
129 m · 31 sec
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21
Turn right
24 m · 6 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 Seattle and Union Gap.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Mount Baker Ridge Tunnel
Keep slight left to continue on Mount Baker Ridge Tunnel
107 mi · 02h 00m
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 Seattle and Sunny near Union Gap.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Union Gap?
The road trip is about 146.6 miles (236 km) and usually takes 02h 47m 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 73.2 miles from Seattle and 73.4 miles from Union Gap.
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 12:54 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.11 one way or $54.21 round trip. Estimated CO2 is about 46 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Seattle and 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 Seattle and Union Gap. Straight-line distance: 113.51 mi (182.67 km).
#1 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 |
#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: 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 | $27.11 | $54.21 |
| Mid-grade | $5.57 | $28.84 | $57.67 |
| Premium | $5.77 | $29.89 | $59.79 |
| Diesel | $5.47 | $28.32 | $56.64 |
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.