How far is Kennewick from Tacoma?

It is approximately 350 kilometers.

No, there is no direct passenger train service to Kennewick.

No, I-90 and I-82 are toll-free on this route.

Yes, it is a well-traveled and safe corridor.

Tacoma

Kennewick

Driving

Tacoma to Kennewick

Updated: 30 May 2026

The drive from Tacoma to Kennewick covers 350 kilometers, primarily via I-90 East and I-82 East. You can expect a travel time of 4 to 5 hours, depending on traffic and mountain pass conditions. This route connects the coastal region of Tacoma with the Tri-Cities area of Kennewick. The drive is scenic, passing through the Cascade Mountains and the high desert of Eastern Washington. While driving is the most common method, some travelers use bus services to reach Kennewick.

Total Distance: 350 km driving distance, 300 km straight-line air distance.

Fastest Way

Driving via I-90 and I-82 takes 4 hours during off-peak hours.

Cheapest Way

Driving your own vehicle is the most cost-effective method.

Compare Tacoma to Kennewick Routes

Driving

Direct

Duration

4 hours

Avg Price

50-65 USD in fuel

Operator

Personal Vehicle

Route

I-90 East to I-82 East.

Check mountain pass conditions on the WSDOT website during winter.

Travel Tips

Check Mountain Passes
Snoqualmie Pass can be closed due to snow; check WSDOT.
Use Navigation
Waze is excellent for finding routes around traffic.
Parking
Kennewick has many parking options; check rates online.
Public Transit
Ben Franklin Transit provides bus services within the Tri-Cities.
Scenic Stops
Stop in Ellensburg or Yakima for a break.