Fuel cost by truck size
Based on 1,078 miles, a gas price of $5.137 and a diesel price of $7.332 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 | 67 | $346 | $407 |
| 10 to 12 ft truck | 11 | 98 | $503 | $592 |
| 15 to 17 ft truck | 9 | 120 | $615 | $724 |
| 20 to 22 ft truck | 8 | 135 | $692 | $814 |
| 26 ft truck | 7 | 154 | $791 | $931 |
| 26 ft truck (diesel) | 8 | 135 | $988 | $1,162 |
The gap between the smallest and largest trucks on this route is about $445 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 |
|---|---|---|---|
| San Diego, CA | $6.031 | $8.242 | California average |
| Denver, CO | $4.244 | $6.422 | Denver average |
Gas runs about $1.79 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 San Diego, CA 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 San Diego, CA.
More moves from San Diego
- San Diego to New York
- San Diego to Los Angeles
- San Diego to Chicago
- San Diego to Houston
- San Diego to Phoenix
- San Diego to Philadelphia
- San Diego to Dallas
- San Diego to Austin
- San Diego to Charlotte
- San Diego to San Francisco
- San Diego to Seattle
- San Diego to Nashville
- San Diego to Atlanta
- San Diego to Miami
- San Diego to Boston
- San Diego to Las Vegas
- San Diego to Orlando
- San Diego to Tampa
- San Diego to Raleigh
More moves to Denver
- New York to Denver
- Los Angeles to Denver
- Chicago to Denver
- Houston to Denver
- Phoenix to Denver
- Philadelphia 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