The journey of a container

Picture our box — a 40-foot container loaded with household goods at a factory in Asia, bound for a Midwest warehouse. Its trip looks fast on a map and slow in practice. The line-haul — the long rail leg across the country — is the quick part. Published premium and expedited schedules from Los Angeles/Long Beach to Chicago land in a roughly three-to-four-day band[1]. Union Pacific runs its fastest domestic service in about three days[2], and BNSF advertises an expedited container reaching Chicago in about 78 hours, with expedited trains averaging near 800 miles a day[3]. Door to door, though, the experienced shipper's number runs higher once the waiting on each end is added in.

The stages, in order

Step through the stages below to follow the box along the corridor — the map traces its actual route and the mode carrying it at each handoff, with the globe in the corner showing how far it has traveled.

Stage 1 of 8 · Packed & sealedOrigin factory (Asia)

Global distance

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Packed & sealed

1. Origin factory (Asia)

A finished-goods shipment is packed and sealed into a 40-foot ISO container at an exporter's dock in Asia. It will not be opened again until it reaches the consignee.

The fork: rail, truck, or transload

Not every import box rides the rails. Across major North American ports in 2024, about 24% of import boxes moved inland directly by international intermodal rail, roughly 16% were transloaded into domestic boxes and then railed, and around 60% simply left by truck[4]. The West Coast skews far more toward rail than that national average — cited at roughly 60-70% of inland-bound import containers[5]. The Port of Los Angeles reports about a third of its intermodal containers use the port's rail network[6], while Long Beach's Pier B program aims to lift the rail share of cargo leaving the port from roughly 20% toward about 35%[7]. These shares swing hard year to year: the IPI rail share out of LA/Long Beach fell from about 68% in 2019 to a low near 41% in early 2022 amid ramp congestion[8].

Dwell, demurrage, and detention

The expensive friction is the waiting. Dwell is the time a container sits idle at a terminal between arrival and onward movement. Rail-destined boxes at the San Pedro Bay ports averaged about five days of dwell in August 2025, down sharply from roughly eight days a year earlier, while local truck dwell ran under three days[9]. Sit too long and charges start. Demurrage accrues when a box overstays its free time at the marine terminal; detention covers the extended use of carrier equipment after the box has left and is not returned on time[10].

The billing rules are in flux. Under the Federal Maritime Commission's 2024 Final Rule, only ocean carriers, NVOCCs, and marine terminal operators may issue these invoices, and they must do so within 30 days of charges last accruing[11]. But a September 2025 D.C. Circuit decision (WSC v. FMC) vacated the rule's provision limiting who could be billed, reopening whether carriers may bill motor carriers — so the billing-party question is unsettled[12].

The empty leg nobody wants to pay for

The journey is not over when the goods come out. Containers move empty because trade is imbalanced — import-heavy regions accumulate boxes while export-heavy Asia runs short, so carriers ship empties back to rebalance[13]. The scale is striking: roughly four in ten container moves now run empty, with empty container-miles climbing to about 41% in 2024 from near 31% in 2019[14]. Repositioning those boxes is estimated to cost ocean carriers more than $20 billion a year, commonly cited as over 12% of liner operating costs[15]. The cheaper alternative is a street turn: reusing an empty import box for a nearby export load instead of hauling it back to the depot, cutting empty miles and per-diem.

Full circle

Our box finishes the way it started — sealed. Its household goods are unloaded at the Midwest warehouse, and within days it is moving again: street-turned to a nearby exporter if one is close, or railed back toward the coast empty to start another crossing. A single container can run this loop for two decades. Multiply it by the tens of millions in circulation and you have the quiet machine the rest of this tour describes — the equipment, the players, and the economics that keep the box moving.

Watch: a container's ocean voyage

Following a box from an Asian factory across the Pacific to the Port of Los Angeles and into the inland network.