好像前麵要留出一兩指的距離。我知道跑鞋我一般買大半號或者一號，比較我其它的非運動鞋。下麵我copy REI網上的information:
https://www.rei.com/learn/expert-advice/how-should-running-shoes-fit.html
How Should Running Shoes Fit?
When you’re first trying on your running shoes in the store or at home, look for the following:
- Proper toe fit: You want a thumb’s width of space between your toe and the end of the shoe.
- Midfoot and heel fit: You should have a snug (but not tight) fit at the midfoot and heel.
Then, after you’ve worn the shoes for a while, first in your home (easier to return if there are issues) and then out for one or two trial runs, look for any of these signs that your running shoes don’t fit properly:
- Tingling or numbness in the toes: This can indicate insufficient volume in shoes (if you have a high-volume foot); it can also mean that your shoes are too short or too narrow. Shoes that are too narrow can lead to serious foot problems, so don’t wait to address this.
- Blisters between or on top of toes: Your shoe is probably too small.
- Blisters on the ball of your foot: Your shoe is probably too wide.
- Bruised toe(s): Your shoes aren’t long enough.
- Heel blisters: First try lacing your shoes with a runner’s loop (learn how in our article, How to Lace Running Shoes). If that doesn’t fix things, then a shoe with a narrower heel cup may likely be the solution.
If you’re convinced that something isn’t right, clean your shoes up and head back to the store. Don’t wait too long, though, because worn shoes make returns problematic.
