A Fit Checklist for Your First Running Shoes
Before you compare models, run through the five fit checks that decide whether a shoe will actually work for you.
By WellnessTrim Editorial Team
4 min read
Buying a first pair of running shoes is mostly a fit exercise. The checks below come from brand fit guidance and published fit advice.
Work through them in order: toe room, width, heel, how you try the shoe on, and finally whether the cushioning feels right. If you want a shortlist to compare against, our best running shoes for beginners guide lists seven daily trainers with their drops, weights and widths.
Toe room first
Nike's fit guidance starts with the front of the shoe: leave about a thumb's width of space between your longest toe and the front of the shoe. You should be able to wiggle your toes.
Sizing and width vary by brand and model, so go by how the shoe feels rather than the number on the tag.
Try This: Slide your foot forward until your longest toe touches the front of the shoe, then feel how much room is left behind your heel.
Width is a separate check
Brooks makes the point that length and width are different problems. If a shoe is long enough but presses on the sides or the top of your foot, the wide version is the fix, not a longer size.
Width options vary a lot from model to model:
- Brooks Ghost 18 and New Balance Fresh Foam X 880v15: four widths for men and four for women, from narrow to extra wide.
- Saucony Ride 19 and Nike Pegasus 42: regular and wide in both men's and women's.
- ASICS Novablast 6: standard, with the men's wide sold as a separate listing; the women's colourway checked was standard only.
- ASICS Gel-Contend 10: standard, with men's extra wide and women's wide sold as separate listings.
Try This: If a shoe presses on the sides or the top of your foot, ask for the wide version before you go up a size.
The heel should hold
The other half of Nike's fit check is the heel: it should feel snug without slipping. A roomy front and a secure back is the shape you are looking for.
Upper details change how that feels from model to model. Brooks says it redesigned the Ghost 18's tongue to feel more pillowy and comfortable against the top of your foot, and describes the update as a more secure fit. Brooks describes the Adrenaline GTS 25 as having a locked-in fit, with mesh on the upper to help your foot stay cool.
Try This: Lace up and take a short walk or jog in the store, then check that your heel stays put and nothing pinches across the top of your foot.
Try them on at the right time
Brooks advises trying shoes on at the end of the day or after a run, when your feet are a little bigger. Wear the socks you actually run in, and bring any inserts you use.
Do not count on a break-in period. Fleet Feet's advice is that a running shoe should feel comfortable as soon as you put it on, with no hot spots or pinching, and that among shoes that fit, the most comfortable one is usually the right one.
Try This: Shop in the late afternoon or straight after a run, with your running socks and any insoles in your bag.
When cushioning feels right
Brands describe cushioning in their own words, and those labels are a quick way to sort a shortlist. ASICS lists the Novablast 6 as high cushioning and the Gel-Contend 10 as regular. New Balance calls the Fresh Foam X 880v15's cushioning soft. Nike describes the Pegasus 42 as responsive, and Brooks calls the Ghost 18's cushioning soft and balanced.
Drops on the same list run from 6 mm to 10 mm: the New Balance Fresh Foam X 880v15 is 6 mm, the ASICS Novablast 6 and Saucony Ride 19 are 8 mm, and the Brooks Ghost 18 and Nike Pegasus 42 are 10 mm. Saucony publishes its stack as 36 mm at the heel and 28 mm at the forefoot. Weights differ as well, from 8.9 oz in the men's Saucony Ride 19 and ASICS Novablast 6 up to 11.2 oz in the men's Gel-Contend 10.
None of that tells you what feels right underfoot. If two pairs fit equally well, let comfort decide.
Try This: Judge cushioning by how the shoe feels on your feet, not by the label on the box.
Neutral or stability
Most runners start in a neutral daily trainer. Stability shoes add guidance features — Brooks calls its version GuideRails, which the brand says help keep excess movement in check — and they are often preferred by runners whose feet roll inward a lot. That tends to show as extra wear on the inner edge of old shoes.
Six of the seven shoes in our beginner running shoe guide are neutral trainers, with the Brooks Adrenaline GTS 25 as the stability option. If you are unsure, a running store can watch you run, which is called a gait analysis.
This is general information, not medical advice. If you have an injury, or a foot or joint condition, check with a healthcare professional before you start running (see our medical disclaimer).
Try This: Look at the wear pattern on the soles of an old pair before you decide between neutral and stability.
When to replace them
Plan for the long term while you are still choosing. Brooks advises replacing running shoes after roughly 300 to 500 miles, or sooner if the tread is worn, the midsole looks creased or wrinkled, or the shoes start to fit or feel different than when they were new.
That is a simple budget argument for buying a pair that fits properly in the first place, rather than a pair you settle for.
Try This: Note the date you start wearing them and roughly how far you run each week, so the 300 to 500 mile mark does not arrive unnoticed.
The Bottom Line
Start with toe room and width, get the heel secure, and try shoes on at the right time of day — then let comfort choose between the pairs that fit. Our guide to the best running shoes for beginners compares seven trainers on support, drop, weight, widths and price so you can shortlist before you shop.
General information only, not medical advice. Talk to your doctor before making big changes to your diet, exercise or sleep, especially if you have a health condition or take medication. See our medical disclaimer and editorial policy.
