How far is Pasco, WA from Union Gap, WA?
The driving distance from Pasco, WA to Union Gap, WA is about 80.6 miles (129.7 km), with a travel time of about 01h 31m by car.
- The straight-line flight distance is about 69.1 miles (111.2 km).
- For a round trip, plan for roughly 03h 02m 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 31m.
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 Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Light Rain then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Pasco and Union Gap.
Turn-by-Turn Driving Directions
Step-by-step road directions between Pasco and Union Gap.
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1
Start on North 8th Avenue
640 ft · 32 sec · North 8th Avenue
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2
At the end of the road, turn right onto West Court Street
1439 ft · 45 sec · West Court Street
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3
Turn left onto North 4th Avenue
1 km · 2 min · North 4th Avenue
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4
Take the ramp left
1944 ft · 47 sec
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5
Merge slight left onto Lewis and Clark Trail
1.3 mi · 2 min · Lewis and Clark Trail
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6
Keep slight left to continue on I 182, US 12
11.8 mi · 13 min
-
7
Keep slight right to continue on I 82 West, US 12 West: Prosser, Yakima
64.2 mi · 1 hr 9 min
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8
Take the exit slight right toward Union Gap
1.5 km · 2 min
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9
Continue on Main Street
1.5 km · 2 min · Main Street
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10
Turn right onto East Ahtanum Road
40 m · 11 sec · East Ahtanum Road
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11
Turn left
21 m · 10 sec
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12
Turn left
24 m · 6 sec
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13
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Pasco 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 82 West
Keep slight right to continue on I 82 West, US 12 West: Prosser, Yakima
64.2 mi · 01h 09m
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.
Slight Chance Light Rain then Mostly Sunny leaving Pasco 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 Pasco to Union Gap?
The road trip is about 80.6 miles (129.7 km) and usually takes 01h 31m 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?
Grandview is a useful midpoint, sitting about 40.2 miles from Pasco and 40.4 miles from Union Gap.
How much longer is the road route than the straight-line distance?
The direct path is about 69.1 miles (111.2 km), while the road route adds roughly 11.5 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 3:28 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.86 one way or $29.72 round trip. Estimated CO2 is about 25.2 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Light Rain then Mostly Sunny around Pasco and Sunny near Union Gap.
Stop Ideas Near Grandview
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 Grandview.
Pasco Intermodal Train Station
Wishram
Moses Lake, Washington
Pendleton, Oregon
Flight Path Map
This map shows the direct air route between Pasco and Union Gap. Straight-line distance: 69.08 mi (111.17 km).
#1 Pasco
The third most populous city in Franklin County, Washington.
| Population | 77,095 |
| Coordinates | 46.2395800, -119.1005700 |
| Altitude | 118 |
| 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: 130 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 41m |
| 40 mph (64.37 km/h) | 02h 00m |
| 50 mph (80.47 km/h) | 01h 36m |
| 60 mph (96.56 km/h) | 01h 20m |
| 70 mph (112.65 km/h) | 01h 09m |
| 80 mph (129 km/h) | 01h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $14.86 | $29.72 |
| Mid-grade | $5.57 | $15.81 | $31.62 |
| Premium | $5.77 | $16.39 | $32.78 |
| Diesel | $5.47 | $15.53 | $31.05 |
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.