Cost to drive from St. Louis to Kansas City
Driving from St. Louis to Kansas City covers 248 miles (399 km) and takes about 4h 44min without stops. At Missouri's current fuel prices (week of 2026-07-20), the fuel for the trip costs about $31.90 in a typical petrol car — here's the full breakdown for petrol, diesel and electric.
| Location | Petrol/gal | Diesel/gal |
|---|---|---|
| St. Louis | $3.86 | $4.76 |
| Kansas City | $3.86 | $4.76 |
Enter your fuel economy and see stops along the way.
How this cost is calculated
We take the real driving distance between St. Louis and Kansas City (248 miles) from OpenStreetMap routing, then multiply by a typical car's fuel use and Missouri's current average pump price. The petrol figure assumes 30 MPG · 7.8 L/100km; diesel and EV use 35 MPG · 6.7 L/100km and 3.5 mi/kWh. Your real cost depends on your car, traffic, driving style and the stations you pick — use the planner for your exact numbers, and check live prices on the Missouri fuel prices page.
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Frequently asked questions
How much does it cost to drive from St. Louis to Kansas City?
The drive is 248 miles (399 km) and takes about 4h 44min without stops. Fuel costs roughly $31.90 in an average petrol car, $33.75 in a diesel, and $12.04 in an electric car, using Missouri's current fuel prices.
How far is it from St. Louis to Kansas City in miles and km?
About 248 miles or 399 kilometres by road — roughly 4h 44min of driving.
Is it cheaper to fill up in St. Louis or Kansas City?
Both ends use the same regional prices on this route.
How do I get the exact cost for my car?
Open the FuelWide route planner, enter your car's fuel economy, and it prices the trip on live data — and shows fuel or charging stops along the way.
Driving distance via OSRM / OpenStreetMap. Fuel prices are Missouri's current official averages; efficiency and electricity rate are typical estimates. Your figure will vary — use the planner for an exact result.