Women's Running Shoe Sizing: The Complete Guide
Women's running shoe sizing has its own conventions, and they don't always line up with how shoes are marketed or discussed online. The size system is separate from men's — women's US sizes are approximately 1.5 sizes larger than their men's equivalents — and the width codes mean different things too. A women's D width is wide; a men's D width is standard.
Many women's running shoe models are also built on narrower lasts than their men's counterparts — a design choice based on average foot width data that doesn't apply to every runner. Women with wider feet often find themselves navigating between underfitted women's options and slightly oversized men's shoes.
This guide covers everything you need: size conversion charts, brand-by-brand fit notes, common fit issues, and how to find the right size for your specific feet using real community data.
Women's vs Men's Running Shoe Sizing
The conversion rule: women's US sizes are approximately 1.5 sizes larger than the equivalent men's size. A women's 9 corresponds to a men's 7.5. This matters when:
- Reading reviews or fit reports written for the men's version of a shoe you want in women's
- Considering whether to try a men's model for better width or fit options
- Cross-shopping between brands that have different gender availability (some colours or models are men's only)
Width is where the systems diverge most significantly. Women's standard width is B (medium). Men's standard width is D (medium). This means the women's standard shoe is actually narrower than the men's standard. A woman who needs a wide shoe needs a D width — which is labelled the same as men's standard and can cause confusion when reading specs.
When a woman with wide feet switches to men's shoes, she gets the benefits of a wider standard last — but also a shoe designed for a different heel shape and arch height. Many women find men's shoes wider at the heel than they need, causing slippage. It's worth trying before committing.
Women's Running Shoe Size Chart
Use this conversion chart when cross-shopping between regions or considering men's models. Foot length in cm is the most reliable reference point — measure heel to longest toe while standing.
| US Women's | US Men's | UK | EU | AU | cm |
|---|---|---|---|---|---|
| 5 | 3.5 | 2.5 | 35.5 | 5 | 22.0 |
| 5.5 | 4 | 3 | 36 | 5.5 | 22.5 |
| 6 | 4.5 | 3.5 | 36.5 | 6 | 23.0 |
| 6.5 | 5 | 4 | 37 | 6.5 | 23.5 |
| 7 | 5.5 | 4.5 | 37.5 | 7 | 24.0 |
| 7.5 | 6 | 5 | 38 | 7.5 | 24.5 |
| 8 | 6.5 | 5.5 | 38.5 | 8 | 25.0 |
| 8.5 | 7 | 6 | 39 | 8.5 | 25.5 |
| 9 | 7.5 | 6.5 | 40 | 9 | 26.0 |
| 9.5 | 8 | 7 | 40.5 | 9.5 | 26.5 |
| 10 | 8.5 | 7.5 | 41 | 10 | 27.0 |
| 10.5 | 9 | 8 | 41.5 | 10.5 | 27.5 |
| 11 | 9.5 | 8.5 | 42 | 11 | 28.0 |
| 11.5 | 10 | 9 | 42.5 | 11.5 | 28.5 |
| 12 | 10.5 | 9.5 | 43 | 12 | 29.0 |
| 13 | 11.5 | 10.5 | 44 | 13 | 30.0 |
Note: Size conversions are approximate. Brands use slightly different lasts — always check the specific brand's size chart when in doubt, and use foot length in cm as your primary reference.
Women's Sizing by Brand
Brand-level fit tendencies for women's running shoes:
Hoka's women's models generally run true to size. The Clifton and Bondi are reliable fits for most women. However, the toebox can feel narrower than expected for the cushioning level — many women note the Bondi in particular runs narrow in the forefoot. Wide-width options are available for the Clifton and Bondi. The Speedgoat runs slightly short.
Brooks is one of the more reliably true-to-size brands for women. The Ghost and Glycerin are workhorses with a comfortable, forgiving fit and both come in wide (D) for women. The Adrenaline GTS offers stability with good width options. The Hyperion (speed/racing) runs narrow and slightly short.
Asics women's shoes tend to run true to size but with a narrower standard last than some competitors. The Gel-Nimbus and Gel-Kayano come in wide (D) for women. The Novablast has a slightly more generous fit. Women with wide feet may find Asics standard models too narrow without the wide variant.
New Balance is the leader for women's width options — many models come in AA (narrow), B (standard), D (wide), and 2E (extra wide). The Fresh Foam 1080 and Fresh Foam More are excellent options for women with wider feet. True to size overall. If you have wide feet and haven't tried New Balance, start here.
Nike women's running shoes generally run true to size. The Pegasus is reliable and consistent. Race shoes (Vaporfly, Alphafly) run shorter and narrower in women's as in men's — most women size up a full size in race shoes. The Invincible is more forgiving. Nike's women's range doesn't offer wide variants for most models.
Saucony women's shoes are generally true to size. The Triumph and Ride are comfortable everyday trainers. The Endorphin Speed and Pro run narrower — these are performance shoes with a snugger fit. The Guide and Omni stability models offer wide (D) options for women.
On Running builds on a narrower last that many women find too tight, particularly in the toebox. There are no wide variants. Sizing up half to a full size is common among women runners in On shoes, though this can cause heel slippage. If you have wide feet, On is a difficult brand to make work.
Altra's FootShape toebox is shaped to match the natural width of the foot, making it one of the best brands for women with wide forefeet or bunions. The zero-drop platform is a significant biomechanical change — transition slowly if you're not used to it. True to size overall. The Via Olympus and Torin are popular women's models.
Common Women's Running Shoe Fit Issues
Women runners encounter a set of fit problems that come up repeatedly:
Heel slippage
Women's heels tend to be narrower relative to foot length than men's. When women try men's shoes for better width, the heel is often too wide, causing slippage. Even within women's shoes, a generous fit in the forefoot can mean the heel cup is slightly large. Try lacing with a heel-lock technique — thread the lace through the top eyelet to create a loop, then cross and tie — this can dramatically reduce heel movement.
Toebox too narrow — bunion issues
Women are more likely to develop bunions than men, partly due to narrower-last shoe design. A tapered toebox pushes the big toe medially over years, contributing to bunion formation. Look for shoes with a rounder, more foot-shaped toebox. Altra, Topo Athletic, and some Hoka models are specifically designed for this. Don't size up — find a wider shoe.
Arch support mismatch
Women's arch height and foot mechanics differ on average from men's, which is why many brands build women-specific lasts with different arch positioning. If you try a men's shoe for width reasons and find the arch placement uncomfortable, this may be why. Women's-specific models from NB, Brooks, and Asics have refined their women's lasts over decades.
When to try men's shoes
Consider men's models if: you have wide feet and can't get adequate width in women's options; you wear a women's size 12+ and find women's selection limited; or you've been recommended a specific model that only comes in men's. Subtract 1.5 from your women's size to get your starting men's size (women's 9 → men's 7.5), then check fit from there.
Finding Your Size with RunSized
RunSized includes community fit reports from women runners. When you search for a shoe, you'll see how other women who wear the same reference shoe sized their target shoe — and whether it ran long, short, narrow, or wide for them specifically.
This is more useful than generic brand advice because it accounts for the specific model and version. The Hoka Clifton 9 and Clifton 10 fit differently; a review from three years ago may not apply to this season's model. Community fit data is current by definition.
Frequently Asked Questions
Do women's running shoes run small?
Women's running shoes generally run true to size within the women's size system. The confusion usually comes from comparing across systems — women's sizes are about 1.5 sizes larger than men's equivalent. So a women's 9 is roughly equal to a men's 7.5. Within the women's system, most brands run true to size, though there are model-specific exceptions (On Running tends narrow, Altra has a wide toebox).
Can women wear men's running shoes?
Yes. Women often try men's shoes when they need a wider fit — men's lasts are generally wider than women's equivalents. A woman who is a women's 9 would typically try a men's 7.5. The key difference beyond width is that women's shoes are sometimes built with a slightly lower heel stack to account for anatomical differences, but for most runners this doesn't materially affect fit. If you have wide feet and struggle to find women's options, men's models are worth trying.
What width is standard for women's running shoes?
Standard women's running shoe width is B (medium). Women's D width is considered wide. This is different from men's, where D is standard. So if you see a shoe listed as 'D width women's,' that's a wide shoe — good to know if you're cross-referencing with men's sizing charts.
Which running shoe brand is best for women with wide feet?
New Balance is the standout option — they offer women's models in B (standard), D (wide), and 2E (extra wide) across many of their core trainers. Brooks is also strong, with the Ghost, Glycerin, and Adrenaline GTS available in wide. Altra's foot-shaped toebox works well for many women with wide forefeet, even in their standard width offering.
Why do my running shoes feel narrower than my regular shoes in the same size?
Running shoes and casual shoes are built on different lasts. A casual sneaker in a given size may have a wider forefoot than a performance running shoe in the same size. Running shoes are designed for a snugger fit to transfer energy efficiently, which can mean a narrower toebox than you're used to. Try going up a half size, or look at brands known for generous toeboxes (Hoka, New Balance, Altra).