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Home > Bikes > Bike sizing guide

Bike sizing guide

Bike sizing

Bike sizes are measured by the frame size, based on the length of the seat tube. This is the measurement from the centre of the bottom bracket to the top of the seat tube, where the seat post is inserted.  The frame of a bike changes in proportion to the frame size.

Stand over height

S
tand over height is the clearance between the top of the top tube and the bottom of your crotch. It is important that you have enough clearance to avoid contact with the bike when you’ve stopped. For road and hybrid bikes 1 to 2 inches of clearance is required, mountain bikes require 2 to 4 inches. This is taken into account when finding the right size bike from the charts below.

What type of bike are you riding?

 
Below is a guide to the types of bikes we stock with the frame size for your height. Please come in to the shop for more guidance and to ensure you get the right size bike for your needs. 

 

Hybrid

Bike

Height

Suggested Frame Size

Trek Neko Ladies Hybrid

4'10 - 5'3

14

5'0 - 5'5

16

5'5 - 5'10

18

Trek Dual Sport Hybrid

5'0 - 5'5

15.5

5'4 - 5'7

17.5

5'6 - 5'10

19

5'9 - 6'2

21

5'11 - 6'5

22.5

Trek FX Series Hybrid

5'0 - 5'5

15

5'4 - 5'7

17.5

5'6 - 5'10

20

5'11 - 6'3

22.5

6'1 - 6'6

25
















Road

 

Bike

Height

Suggested Frame Size

Trek Domane AL

4'11-5'3

47cm

Trek Domane

5'2-5'4

50cm

Trek Emonda

5'5-5'7

52cm

Trek Madone

5'6-5'9

54cm

Trek Boone

5'7-5'10

56cm

5'9-6'

58cm

5'11-6'2

60cm

6'1-6'5

62cm

Special Note
Emonda 
SL and above, Domane SL and above, Madone and Boone all have seat masts and have less size tolerance. Please check before purchasing.

Mountain

Bike

Height

Suggested Frame Size

Trek Marlin

Trek X-Caliber

4'8 - 5'3 (approx age 9+)

13.5 (Marlin and X-Calibers only) 650b wheels

Trek Roscoe

5'0 - 5'5

15.5 650b wheels

Trek Procaliber

5'6 - 5'9

17.5 29" wheels

Trek Fuel-Ex

5'9 - 5'11

18.5 29" wheels

5'10 - 6'0

19.5 29" wheels

5'11 - 6'2

21.5 29" wheels

6'0 - 6'6

23 29" wheels

Trek Skye

4'8 - 5'3 (approx age 9+)

13.5 650b wheels

5'0 - 5'5

15.5 650b wheels

5'5 - 5'9

17 29" wheels

5'8 - 5'11

18.5 29" wheels

Trek Skye S

4'8 - 5'3 (approx age 9+)

13.5 650b wheels

5'0 - 5'5

15.5 650b wheels

5'5 - 5'9

17 29" wheels

5'8 - 5'11

18.5 29" wheels






Children's bikes

12''     3-5 years

14''     4-6 years

16''     5-7years

18''     6-8years

20''     7-9 years

24''     8-11 years

26/13 frame     9-12 years