What are the most popular brands of semi trucks in the US?

The most popular semi truck brands in the US, known for their reliability, performance, and widespread use, include: Freightliner: Explore our current Freightliner semi truck listings here. International: Find your next International semi truck here. Peterbilt: Browse all available Peterbilt semi trucks for sale. Kenworth: View our selection of Kenworth semi trucks. Volvo: Discover Volvo semi trucks currently available. Mack: See our inventory of Mack semi trucks.

How many miles is too many on a used semi truck?

A well-maintained semi truck engine is built to run 750,000 to over 1,000,000 miles before a major overhaul. Mileage alone isn't the right filter — service history, engine condition, and whether the truck has had any major powertrain work matter more. A 600,000-mile truck with documented maintenance and recent engine work can be a better buy than a 400,000-mile truck with no service records.

Should I buy a day cab or sleeper semi truck?

It depends on your operation. If your routes are regional or local and drivers return home nightly, a day cab is the more practical and cost-efficient choice — it's lighter, simpler, and less expensive to maintain. If you're running long-haul or OTR freight where drivers spend nights on the road, a sleeper provides the comfort and compliance with hours-of-service regulations that an OTR operation requires.

Can I search semi trucks by location on Comvoy?

Yes. Comvoy lets you filter semi truck listings by location so you can find trucks available near you or in a specific state — reducing transport costs and making it easier to inspect before you buy. You can also filter by make, model year, mileage, and price to narrow results to your exact spec.

How much weight can a semi truck carry?

The legal limit for a loaded semi-truck in the US is 80,000 pounds, though the actual capacity can vary depending on the truck and trailer configuration.

How many gears do semi trucks have?

They can have up to 18 gears, providing the necessary torque and power for hauling heavy loads efficiently.

How much fuel do semi trucks use?

Fuel efficiency varies depending on engine size, load weight, and driving conditions, but expect lower mpg than cars, typically around 5-8 mpg.

Do you need a special license to drive a semi truck?

Yes, a Commercial Driver's License (CDL) with specific endorsements is required to operate a semi-truck legally.

What are the challenges of being a truck driver?

Long hours on the road, loneliness, traffic congestion, and dealing with varying weather conditions are some of the challenges truck drivers face.

What kinds of trailers can semi trucks haul?

Semi trucks can haul many different types of trailers. The most commonly hauled trailers are dry vans, reefers, flatbeds, tankers, and lowboys.

Semi Trucks for Sale near Longmont, Colorado

Used 2020 Freightliner Cascadia - photo 1

Used 2020 Freightliner Cascadia - photo 2

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$33,495

speed 523,860 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$72,182

speed 411,682 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia - photo 1

Used 2019 Freightliner Cascadia - photo 2

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$28,995

speed 633,595 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$58,361

speed 584,877 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$60,858

speed 557,129 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$50,796

speed 607,822 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$58,737

speed 580,703 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2021 International LT Cummins X15, Signature Day Cab Truck

$31,500

speed 628,857 mi

location_on

Ryder Used Trucks

Syracuse, NY (1,496.1 mi)

(855) 459-6420

Used 2021 Freightliner Cascadia - photo 1

Used 2021 Freightliner Cascadia - photo 2

Used 2021 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

$41,000

speed 889,308 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$26,000

speed 627,500 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$26,000

speed 667,871 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$37,433

speed 606,298 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2021 International LT Cummins X15, Signature Day Cab Truck

$30,000

speed 458,463 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$49,141

speed 365,848 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

$35,495

speed 449,844 mi

sell

Key features

DD13'17 450/1650
6x4
Day Cab

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 International LT Cummins X15, Signature Day Cab Truck

$35,495

speed 464,067 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$48,707

speed 345,859 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$26,995

speed 500,309 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2021 International LT Cummins X15, Signature Day Cab Truck

$34,995

speed 380,361 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2021 International LT Cummins X15, Signature Day Cab Truck

$36,995

speed 343,506 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$37,371

speed 606,991 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$32,495

speed 524,659 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 International RH International A26 Day Cab Truck

$26,000

speed 489,269 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$35,318

speed 629,803 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$57,399

speed 290,378 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

$46,513

speed 389,741 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$31,995

speed 506,483 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

$27,995

speed 677,239 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$34,995

speed 489,192 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

$26,000

speed 644,763 mi

location_on

Ryder Used Trucks

Beltsville, MD (1,496.7 mi)

(855) 459-6420

Semi Trucks for Sale near Longmont, Colorado

Filters

4,840 results

Applied

Location

Condition

Listing Type

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2019 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2021 International LT Cummins X15, Signature Day Cab Truck

Used 2021 Freightliner Cascadia Detroit Diesel DD15 Sleeper Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2021 International LT Cummins X15, Signature Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Semi Trucks / Tractors

Used 2020 International LT Cummins X15, Signature Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2021 International LT Cummins X15, Signature Day Cab Truck

Used 2021 International LT Cummins X15, Signature Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 International RH International A26 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2019 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit DD13 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Used 2020 Freightliner Cascadia Detroit Diesel DD15 Day Cab Truck

Frequently Asked Questions about Semi Trucks / Tractors

Most Popular Work Truck and Van Inventory

Right Truck. Right Place. Right Time.