About RunSizer
Free price comparison for running shoes across the UK. Search once, find your size, buy at the best price.
91
Shoes tracked
8+
UK retailers
Free
Always
The same running shoe can vary by £40 or more depending on where you buy it.
Finding your size in stock across multiple retailers means visiting six different websites, tabbing back and forth, and still not knowing if you got the best price. We built RunSizer to fix that — one search, every retailer, sorted by price.
How it works
Search your shoe
Find any shoe in our catalogue from Nike, Adidas, Hoka, Brooks, Asics, New Balance, On Running, Saucony and more.
Pick your size
Select your UK size and we instantly filter to only show retailers who have that size in stock right now.
Buy at the best price
Prices are sorted lowest first. Click through to buy directly on the retailer's site. We never handle your payment or data.
Not sure which shoe is right for you?
Answer 4 quick questions and we'll recommend the right shoe for your running.
Takes 2 minutes
Guides
We also publish independent buying guides — from which carbon plate shoe is worth the money, to what a beginner should actually buy. Written by real runners. No paid placement, ever.
How we make money
RunSizer is completely free. When you click through to a retailer and buy something, we earn a small affiliate commission. That commission comes from the retailer — it never changes the price you pay.
Price accuracy
We update prices and stock levels regularly, but they move fast. Always confirm the final price on the retailer's site before you buy.
Say hello
Spotted a wrong price? Got a shoe we should add? Just want to say hi? hello@runsizer.com.