Diesel prices along
I-29.
I-29 runs south to north from Kansas City to the Canadian border, crossing 4 states. Right now the cheapest median on the corridor is $5.66/gal in South Dakota and the most expensive is $5.90/gal in North Dakota, a $0.24/gal gap.
Data window: last 7 days · 829 observations · 533 truck stops on I-29
Where the cheap stops fall
Fuel in South Dakota, state 3 of 4 running south to north.
Running I-29 south to north, South Dakota is where the median drops lowest. A 250-gallon fill there runs about $60 less than the same fill in North Dakota, on one truck, on one fill, before any negotiated discount is applied.
State medians tell you which state to lean on. Which station, how many gallons, and whether the tank can make it there is what ValveRide Flow works out per dispatch, with your contract rates and state fuel-tax differences layered on top of the posted price.
State by state
I-29 diesel prices, Missouri to North Dakota
States in road order, south to north. Cheap and expensive are the 10th and 90th percentile of tracked stations in each state; spread is the gap between them, and a wider spread means more room for a routed fleet to save inside that state.
| # | State | Cheap (p10) | Median | Expensive (p90) | Spread | Stations |
|---|---|---|---|---|---|---|
| 1 | MissouriMO | $5.50 | $5.89 | $6.16 | $0.66 | 208 |
| 2 | IowaIA | $5.60 | $5.80 | $6.10 | $0.50 | 215 |
| 3 | South DakotaSDcheapest median | $5.35 | $5.66 | $6.20 | $0.85 | 59 |
| 4 | North DakotaND | $5.57 | $5.90 | $6.20 | $0.63 | 51 |
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Questions, answered
I-29 diesel prices, explained.
Where is diesel cheapest along I-29 right now?
The lowest median diesel price on I-29 is $5.66 per gallon in South Dakota, across 59 tracked truck stops. The cheapest 10% of stations anywhere on the corridor are at or below $5.35/gal, in South Dakota.
Which states on I-29 have the most expensive diesel?
North Dakota has the highest median on I-29 at $5.90/gal, $0.24 above South Dakota. On a 250-gallon fill that gap is about $60 between the two states, before any negotiated discount.
How much does diesel cost along I-29 today?
State medians along I-29 currently range from $5.66 in South Dakota to $5.90 in North Dakota, based on 829 price observations from 533 truck stops in the last 7 days. Prices are pump-posted retail, not contract rates.
Prices are pump-posted retail percentiles from tracked truck stops in the 48 contiguous states, never contract or discounted rates. Methodology and the full state table live on the national diesel prices page.
Connecting corridors
Other interstates that share a state with I-29
All corridors: diesel prices by interstate. Origin-to-destination view: diesel prices by lane.
Your trucks run I-29.
Flow makes every fill count.
Live prices, your negotiated contracts, and state fuel-tax math, applied automatically on every dispatch, with every claimed dollar reconciled against a real transaction.