Fuel cost by truck size
Based on 1,005 miles, a gas price of $4.475 and a diesel price of $6.387 a gallon. Towing a car on a trailer or dolly lowers fuel economy by about 15%.
| Truck | MPG | Gallons | Fuel cost | Towing a car |
|---|---|---|---|---|
| Cargo van | 16 | 63 | $281 | $331 |
| 10 to 12 ft truck | 11 | 91 | $409 | $481 |
| 15 to 17 ft truck | 9 | 112 | $500 | $588 |
| 20 to 22 ft truck | 8 | 126 | $562 | $661 |
| 26 ft truck | 7 | 144 | $642 | $756 |
| 26 ft truck (diesel) | 8 | 126 | $802 | $944 |
The gap between the smallest and largest trucks on this route is about $361 in fuel alone, so it pays to rent only as much truck as you need.
Fuel prices at each end of the move
| Where | Gas | Diesel | Price basis |
|---|---|---|---|
| Chicago, IL | $4.705 | $6.352 | Chicago average |
| Denver, CO | $4.244 | $6.422 | Denver average |
Gas runs about $0.46 a gallon cheaper around Denver, CO. Most one-way rentals are returned near Denver, so that’s the cheaper place to top the tank back up to the level you picked it up at.
Weekly retail averages from the U.S. Energy Information Administration for the week of October 19, 2026. Prices along the way will vary. EIA source
Planning the drive
A loaded box truck is slower than a car on hills and safest at moderate speeds, and most drivers find 450 miles a comfortable day. That makes Chicago, IL to Denver, CO a 3-day drive, so budget for hotel nights and meals on top of fuel. The rental itself and any per-mile fees are charged separately from fuel.
Other moves
Going the other way? See Denver, CO to Chicago, IL.
More moves from Chicago
- Chicago to New York
- Chicago to Los Angeles
- Chicago to Houston
- Chicago to Phoenix
- Chicago to Philadelphia
- Chicago to San Diego
- Chicago to Dallas
- Chicago to Austin
- Chicago to Charlotte
- Chicago to San Francisco
- Chicago to Seattle
- Chicago to Nashville
- Chicago to Atlanta
- Chicago to Miami
- Chicago to Boston
- Chicago to Las Vegas
- Chicago to Orlando
- Chicago to Tampa
- Chicago to Raleigh
More moves to Denver
- New York to Denver
- Los Angeles to Denver
- Houston to Denver
- Phoenix to Denver
- Philadelphia to Denver
- San Diego to Denver
- Dallas to Denver
- Austin to Denver
- Charlotte to Denver
- San Francisco to Denver
- Seattle to Denver
- Nashville to Denver
- Atlanta to Denver
- Miami to Denver
- Boston to Denver
- Las Vegas to Denver
- Orlando to Denver
- Tampa to Denver
- Raleigh to Denver