Bontrager Sonic Road Shoes

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Women's UK Shoe Size
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Guaranteed Fit
From 68.70 33.20 discount
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  • Free tracked delivery
  • Trustpilot review 9.4 out of 50.878 reviews

Pros & Cons

  • Also available in the awesome purple version for those who wish to really stand out on the bike.
  • A precisely tuned fit is made possible through the BOA retention system.
  • The white version is easily smudged in poor weather conditions.
Read more on what our customers have to say about this product


Brand Bontrager
CollectionSummer 2018
Sole Stiffness Moderate
Type of closure Dial
Shoe Width Average
Pedal type 3-point attachment
Guaranteed Fit Yes


The Bontrager Sonic is a combination of a very affordable shoe and beautiful looks. They're fitted with a BOA retention system which you won't find at this price with any other shoe manufacturer. The PowerTruss sole supports both novice and more advanced riders with a decent power transfer efficiency. In short: the Sonic women's road cycling shoes offer an excellent fit and striking new looks but at a budget intended for everyone.

Extensive explanation size in cm
The size denoted in cm tells you how long the shoe is. This size was taken on the inside of the shoe measuring from the heel to the toes. In order to determine what size you’ll need, you can measure your own foot. Do this by placing a piece of paper on the floor tucked against the wall. Stand on the paper with your heel against the wall. Draw a line at your big toe. Measure the distance between that and the wall, and add approximately 5 mm. The number of centimeters is the size in centimeters found on our website. Which specific EU/UK size you need can differ between brands. This is because each brand uses their own boot tree, causing the shoe to be bigger or smaller than the size would suggest. This is why we’ve added the size in centimeters for all of our shoes. We’ve also categorised our shoes in three different groups: narrow, medium, and wide. In order to determine the width of your foot, you can use this table. Read all about it on our blog!

Find out more on our Blog

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30 Day Satisfaction Guarantee

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Sex Women Women Women Women
Collection Summer 2018 Summer 2018 Summer 2018 Summer 2019
Sole Stiffness Moderate Rigid Moderate Moderate
Type of closure Dial Dial Buckle Dial
Shoe Width Average Average Average / Narrow Average
EU Shoe Size 37 / 38 / 39 / 40 / 41 / 42 / 24,3 cm 37 / 38 / 39 / 40 / 41 / 42 / 23 cm 38 / 39 / 40 / 41 / 42 / 43 / 23 cm 37 / 38 / 39 / 40 / 41 / 42 / 22,5 cm
From 68.70 77.30 85.90 77.30
This product View product View product View product

Customer photos


10 / 10

Nienke, 28 April 2019

Aangename schoen

Het is een aangename schoen. Het zit goed en kan makkelijk vaster of losser gemaakt worden. Het is van goede kwaliteit.


  • Past goed
  • Goede sluiting
  • Goede kwaliteit

7 / 10

Co, 8 November 2017

Goede aankoop!

Staat niet expliciet bijgenoemd dat je nog extra onderdelen nodig hebt voor het monteren van normale SPD aan de schoen, maar dit is wel nodig!


  • Prijs/kwaliteit
  • Boa systeem


  • Niet zomaar geschikt voor SPD

All specifications

Manufacturer specifications

• inForm Race last which offers a slightly wider, performance-orientated fit
• Nylon composiet Bronze Series sole
• Power Truss sole design to improve stiffness without a noticeable increase in weight
• Boa L6-dial for a precisely tuned fit
• Stiffness index 8 out of 14
• Synthetic upper with mesh ventilation inserts
• Suitable for both 2-bolt SPD and 3-bolt cleats
• Women Specific Design developed to provide women with a better fit and more comfort

Customer Service
020 3695 9922