How many miles is Seattle to Los Angeles by truck?

1,137 miles on truck-legal roads (about 21h 14m of driving), crossing 3 states. The biggest legs: California (661 mi), Oregon (311 mi), Washington (166 mi). Per-state miles come from the routing provider's state-line splits — the same jurisdiction-by-jurisdiction method IFTA returns are built on.

How much fuel tax does the Seattle to Los Angeles run generate?

About $113.60 at 80,000 lbs and 6.5 MPG, using the official IFTA matrix for 2026 Q3. You pay it at the pump and settle the balance on the quarterly return — this is what the trip adds to your quarter across the states it touches.

Which weight-distance taxes apply between Seattle and Los Angeles?

Oregon Weight-Mile Tax: 311 miles at this weight ≈ $78.07 (own state account and return — IRP and IFTA don't cover it).

Can I run Seattle to Los Angeles without IRP and IFTA?

Yes — with per-trip permits in each state that requires them. For this route the flat published fees add up to $176 plus formula-priced permits in OR. That's the per-run price of not being apportioned; a few runs a year and apportioning usually wins.

Are these figures official?

The rates are: the IFTA quarterly matrix, each weight-distance state's published schedule, and permit fees from state agency sources with verification dates. The totals are estimates for a standard 80,000-lb 5-axle dry van — your weight, MPG and exact routing move them. Not legal or tax advice.

Seattle to Los Angeles trucking: miles, taxes & permits

By TruePermitReviewed by the TruePermit compliance teamRoute computed 2026-09-05

Seattle, WA → Los Angeles, CA: 1,137 miles on truck-legal roads, about 21h 14m of driving, across 3 states. At 80,000 lbs the run generates $191.67 in government obligations — fuel tax and weight-distance taxes — before the fuel itself or tolls.

Miles and fuel tax by state

State	Miles	IFTA fuel tax (6.5 MPG)
California	661	$98.73
Oregon	311	$0
Washington	166	$14.87
Route total	1,137	$113.60

Official IFTA matrix, 2026 Q3; per-gallon surcharges included where levied. Fuel tax is settled at the pump plus the quarterly return — this is the trip's total burden.

Weight-distance taxes on this route

Oregon Weight-Mile Tax — 311 mi × 25.12¢/mi$78.07

Owed on the miles whether or not you hold IRP/IFTA — each is its own state account with its own return. The linked calculators price your exact weight.

Running it without IRP / IFTA

Not apportioned? Every state on the route sells per-trip alternatives. For Seattle to Los Angeles the flat published fees total $176 per run (plus formula-priced permits in OR). That's the price of flexibility — run it monthly and apportioning wins fast. The route permit checker itemizes each state's fee.

Price your own truck on this route

These figures assume 80,000 lbs, 5 axles and 6.5 MPG. The free calculator reruns the route with your weight, MPG and credentials — and with your USDOT number it adds a live FMCSA Legal-to-Run check.

Calculate this trip for your truck →

Frequently asked

How many miles is Seattle to Los Angeles by truck?: 1,137 miles on truck-legal roads (about 21h 14m of driving), crossing 3 states. The biggest legs: California (661 mi), Oregon (311 mi), Washington (166 mi). Per-state miles come from the routing provider's state-line splits — the same jurisdiction-by-jurisdiction method IFTA returns are built on.
How much fuel tax does the Seattle to Los Angeles run generate?: About $113.60 at 80,000 lbs and 6.5 MPG, using the official IFTA matrix for 2026 Q3. You pay it at the pump and settle the balance on the quarterly return — this is what the trip adds to your quarter across the states it touches.
Which weight-distance taxes apply between Seattle and Los Angeles?: Oregon Weight-Mile Tax: 311 miles at this weight ≈ $78.07 (own state account and return — IRP and IFTA don't cover it).
Can I run Seattle to Los Angeles without IRP and IFTA?: Yes — with per-trip permits in each state that requires them. For this route the flat published fees add up to $176 plus formula-priced permits in OR. That's the per-run price of not being apportioned; a few runs a year and apportioning usually wins.
Are these figures official?: The rates are: the IFTA quarterly matrix, each weight-distance state's published schedule, and permit fees from state agency sources with verification dates. The totals are estimates for a standard 80,000-lb 5-axle dry van — your weight, MPG and exact routing move them. Not legal or tax advice.

More route costs

Estimates for compliance planning, not filings or legal/tax advice. Mileage from a truck-profile route computed 2026-09-05; your dispatch routing will differ. Excludes fuel itself, tolls, oversize/overweight formulas and local fees. Rates change quarterly — verify with each state before you file.