Trek Bikes Size Guide

The table below should give you a sense of what size your bike should be. Bear in mind that these are only indications and that everybody has small differences across their body’s make-up. If you would like to know more about sizing, you can also contact us for further guidance.

To get a good start on measuring for your bike you should take an inside leg measurement and also know how tall you are. 

Men’s Bike Sizing 

 

Inside Leg Measurement (cm)

Height (cm)

Mountain Bike Size (inches)

Road Bike Size (cm)

66

147-152

13” (x-small)

47-48 (xx-small)

69

152-160

13-14” (x-small) 

49-50 (x-small)

71

160-170

15-16” (small)

50-53 (small)

76

170-175

17-18” (medium)

54-55 (medium)

79

175-180

18-19” (medium/large)

56-58 (large)

81

180-188

19-20” (large)

58-60 (x-large)

86

188-196

20-22” (x-large)

60-62 (x-large/xx-large)

91

196+

23-24” (xx-large)

62-63 (xx-large)

 

Shop Our Full Range of Men’s Bikes

 

Women’s Bike Sizing 

 

Inside Leg Measurement (cm)

Height (cm)

Mountain Bike Size (inches)

Road Bike Size (cm)

66

147cm-155cm

13-14” (x-small)

44-46 (xx-small)

69

155-160

13-14” (x-small)

47-49 (x-small)

71

160-165

15-16” (small)

50-52 (small)

76

165-172

17-18” (medium)

53-55 (medium)

79

172+

19” (large)

56-57 (large)

 

Shop Our Full Range of Women’s Bikes

 

Kid’s Bike Sizing  

 

 

Age 

Height (cm)

Wheel Size (inches)

2-4

90-105

12”

4-7

105-118

14-16”

7-10

118-135

18-20”

10-13

135-150

24”

13+

150+

26-27.4”

 

Shop Our Range of Kids Bikes