Trek Bike Size Chart By Height In CM & Inches (Road Bike/MTB)

Trek Bike Size Chart By Height In CM & Inches (Road Bike/MTB)

A Trek bike size guide is all you need when the search for the correct bicycle size is still on. Known to be the number 1 performance bike brand all over the globe, Trek has been stacked with powerful engineering and classy bikes.

There are many questions revolving around passionate fans of the brand with one of them being, what size Trek bike do I need?

Well, the answer is very simple. You will need to go through the charts below for a particular bike type and model you are looking for.

Trek size charts

Trek bike sizes can vary, and that can lead to more confusion among potential buyers. The below charts will help in choosing the right model according to your height and inseam.

Trek mountain bike size chart

Trek mountain bikes come in different categories and offer sizes for every individual, starting from extra small to extra large. Take a look at the tables below and select the ideal fit for yourself.

Category – Full suspension, Hardtails, Electric, Cross Country, Trail, Enduro, Downhill, Fat Bikes, and Fuel EXe (E-MTB)

Models/Series – Supercaliber, Top Fuel, X-Caliber, Procaliber, Farley, Roscoe, Marlin, Powerfly, Service, 820, Slash, Remedy, Fuel EX, and Session

4’5″-4’9″ (135-145cm)25″-27″ (64-68cm)2XS
4’9″-5’1″ (145-155cm)27″-29″ (69-73cm)XS
5’1″-5’5″ (155-165cm)29″-31″ (74-78cm)S
5’5″-5’9″ (165-176cm)31″-33″ (79-83cm)M
5’8″-5’11” (173-180cm)32″-34″ (81-86cm)M/L
5’10”-6’2″ (177-188cm)33″-35″ (84-89cm)L
6’2″-6’5″ (188-195cm)35″-36″ (89-91cm)XL
6’5″-6’8″ (195-203cm)36″-38″ (91-97cm)2XL

Trek MTB Cross Country (820)

4’10”-5’1″ (147-155cm)27″-29″ (69-73cm)XS
5’1″-5’7″ (155-169cm)29″-31″ (73-79cm)S
5’7″-6’0″ (169-182cm)31″-33″ (79-85cm)L

Trek E-Mountain bike

Models/Series – Powerfly, E-Caliber, and Rail

4’6″-5’1″ (137-155cm)25″-29″ (64-73cm)XS
5’0″-5’6″ (153-167cm)28″-31″ (72-79cm)S
5’3″-5’9″ (161-175cm)30″-32″ (76-82cm)M
5’9″-6’2″ (174-188cm)32″-35″ (82-88cm)L
6’1″-6’5″ (186-196cm)34″-36″ (87-92cm)XL

Trek road bike size chart

Road bikes are an essential part of the brand that caters to a wide range of audience, thanks to its diverse range of models. These Trek road bike size charts shall help you pick the right bicycle that can go a long way for an adventurous ride.

Category – Performance/Gravel

Models/Series – Madone, Emonda, and Domane

5’0″-5’2″ (152-158cm)28″-30″ (71-75cm)47
5’2″-5’4″ (158-163cm)29″-30″ (74-77cm)50
5’4″-5’6″ (163-168cm)30″-31″ (76-79cm)52
5’6″-5’9″ (168-174cm)31″-32″ (78-82cm)54
5’9″-5’11” (174-180cm)32″-33″ (81-85cm)56
5’11”-6’1″ (180-185cm)33″-34″ (84-87cm)58
6’1″-6’3″ (185-190cm)34″-35″ (86-90cm)60
6’3″-6’5″ (190-195cm)35″-36″ (89-92cm)62

Category – Bikepacking/Cyclocross

Model/Series – 520 and 520 Grando

5’2″-5’4″ (158-163cm)29″-30″ (74-77cm)48
5’4″-5’6″ (162-168cm)30″-31″ (76-79cm)51
5’6″-5’9″ (168-174cm)31″-32″ (78-82cm)54
5’8″-6’0″ (173-184cm)32″-34″ (81-86cm)57
6’1″-6’3″ (185-190cm)34″-35″ (86-90cm)60
6’3″-6’6″ (190-197cm)35″-37″ (89-93cm)63

Models/Series – Checkpoint and Boone 6

5’1″-5’4″ (156-163cm)29″-30″ (74-77cm)49
5’4″-5’6″ (163-168cm)30″-31″ (76-79cm)52
5’6″-5’9″ (168-174cm)31″-32″ (78-82cm)54
5’9″-5’11” (174-180cm)32″-33″ (81-85cm)56
5’11”-6’1″ (180-185cm)33″-34″ (84-87cm)58
6’1″-6’3″ (185-191cm)34″-35″ (86-90cm)61

Model Series – 1120

5’1″-5’5″ (155-165cm)29″-31″ (74-78cm)S
5’5″-5’9″ (165-176cm)31″-33″ (79-83cm)M
5’8″-5’11” (173-180cm)32″-34″ (81-86cm)M/L
5’10”-6’2″ (177-188cm)33″-35″ (84-89cm)L
6’2″-6’5″ (188-195cm)35″-36″ (89-91cm)XL

Trek electric road bike sizing

Models/Series – FX+, DUAL SPORT+, vEREVE+, and Allant+

4’10”-5’1″ (147-155cm)27″-29″ (69-73cm)XS
5’1″-5’5″ (155-165cm)28″-31″ (72-78cm)S
5’5″-5’9″ (165-175cm)30″-33″ (77-83cm)M
5’9″-6’1″ (175-186cm)32″-35″ (82-88cm)L
6’1″-6’6″ (186-197cm)34″-37″ (87-93cm)XL

Trek alpha sizing for MTB – what is it?

Trek MTB Alpha Sizing

The old-school approach of measuring the frame size of Trek bikes is a thing of the past. With newer inventions and modern bike geometry, alpha sizing is used in place of numeric sizing on Trek mountain bikes.

Why is alpha sizing important?

1. Easier approach

Instead of using size numbers like 19.5, the sizes can be classified into S, M, ML, L, XL, and XXL. So, someone with a 17.5 size can go for the medium and a 19.5 is a large size. You don’t have to keep a tab on numbers; instead, the alphabet makes it easier.

2. Measurement based on reach

In earlier times the frame size measurement of Trek bikes was solely based on seat tube length. Things have changed, and modern mountain bike geometry focuses more on reach as of now. Hence, alpha sizing measures what matters and is a more simplified way of measuring bike size.

Trek sizing – virtual vs actual

Virtual vs Actual bicycle sizing

This can puzzle you a bit as they both are somewhat similar yet there is a subtle difference. Actual size can be termed as the overall length of the seat tube from the center of the bottom bracket to the center of the top tube intersection with the centerline of the seat tube.

On the other hand, virtual sizing is the overall length of the seat tube ranging from the center of the bottom bracket to the mid-point of the imaginary horizontal top tube in which it connects with the seat tube.

If I had to give you an example, a bike might have a virtual size of 18.5 and an actual size of 17.5. This means that the bike size feels like 18.5, but in actual sense, the frame size is 17.5. It doesn’t make much of a difference as it is there only to let you know what it is (actual size) and what it looks like in size (virtual size).

People also ask

Trek 17.5 frame size – what does it mean?

A 17.5 frame size is considered an M size (Medium) in terms of alpha sizing. Any individual who is 161-172 cm or a height of 5’3.4”-5’7.7”. If you are within this height range, going for a medium size shall be the right choice.

Trek medium frame size is for what height?

A medium size frame size (17.5) is ideal for a person with a height between 5’3.4”-5’7.7”. In centimeters, it is ideal for those around 161 to 172 cm in height.

Trek 24-inch bike is for what age?

When it comes to children, their bikes are measured in terms of wheel size instead of the standard frame size. These kid’s bikes have a size range between 12-26 inches, depending upon the height of the kid.

As far as a 24-inch wheel size is concerned, any kid between the ages of 8-11 can go for a fun ride with it. Some of the popular 24-inch bike models are Trek Roscoe 25, Wahoo 24, Trek Precaliber 24, etc.

Trek 26-inch bike is for what height?

A 26-inch wheel-size bike is for kids with a height of 4’9”-5’3” (146-160 cm). Wahoo 26 is a prime example of a bike in this category.

Trek 20-inch bike is for what age?

Trek 20-inch bikes are for children between 5 to 8 years of age. Additionally, if they are within the height of 3’9”-4’6”, it should be suitable for them.

Are Trek bikes good?

Trek bikes are considered to be extremely good and solid in build. It is known to be the number 1 performance bike brand all over the globe. Having its humble beginning in the year 1976 in Waterloo, Wisconsin, it has turned into the largest bicycle manufacturer all over the world. With an array of bikes ranging from, mountain, road, electric, and kids bikes, there is a lot to choose from a mammoth list.

How much is a used Trek bike worth?

It depends on a lot of factors in terms of how old the bike is, the year of production, which model, and a lot more. However, it can be within $1000-10,000 (depending on the model and other factors).

Where are Trek bikes made?

The majority of their bikes are manufactured in Taiwan, China, Netherlands, and Germany too.

Why are Trek bikes so expensive?

Usually, the bike brand prefers top-tier components, suspensions, and frames that are ahead of its competitors. This results in additional costs that can be seen in the price tag and also many top-end Trek bikes are custom-made with less production, leading to being more expensive.


Trek bikes are a class apart in many ways with a range of bikes on offer for its fans across the world. Choosing the right size for you can be tricky, but this is where the Trek frame size chart comes to the rescue.

Trek as a bicycle brand might be on the costly side, but they punch above its weight to provide top-class bikes for the masses. I am always someone who roots for quality, and Trek provides what I need.

One comment

  1. Thanks for your informative post. I really like the Trek alpha sizing for MTB because Trek frame sizes use alpha sizing rather than the usual inches or centimeters (cm), and they usually have a certain range of measurements.

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