1) STRING IT OUT
Your heel should fit snug, but not tight, says Carl Brandt. “Laced up (but not tied), you should be able to slide your feet out.” Lacing your shoes up through the final eyelet minimizes slippage. There will be some heel movement, but it shouldn’t be uncomfortable. Any irritation you feel in the store, adds Brandt, will be amplified once you hit the road.
2) THE THIRD DIMENSION
A shoe’s upper should feel snug and secure around your instep, explains Brandt. “When people tell me they feel pressure and tightness, they need more space.” If an otherwise great shoe has hot spots or pressure under the laces, try lacing it up a different way (check out Runnersworld.com/lacing for alternative lacing techniques) before moving on to the next shoe.
3) SPREAD OUT A LITTLE
Your foot should be able to move side-to-side in the shoe’s forefoot without crossing over the edge of the insole, says James. You should be able to pinch a quarter inch of upper material along the widest part of your foot. If the shoe is too narrow, you’ll feel the base of your little toe sitting on the edge of the shoe last.
4) WIGGLE ROOM
Feet swell and lengthen over a run, so make sure there’s a thumb’s width of space between your longest toe (which isn’t always the big toe) and the end of a shoe. A friend or shoe fitter can measure this while you stand with your shoes laced up. Your toes should also wiggle freely up and down, explains Super Jock ‘n Jill running store owner Chet James. “Wiggle room protects against front-of-the-foot issues.”
5) CHECK FOR THE BENDS
Check the flex point before you put on the shoe, suggests Carl Brandt, owner of San Diego’s Movin Shoes running stores. You can do this by holding the heel and pressing the tip of the shoe into the floor. The shoe should bend and crease along the same line your foot flexes. An improperly aligned flex point can lead to arch pain or plantar fasciitis, while a lack of flexibility leads to Achilles-tendon or calf strain.
6) STEP ON IT
Knowing your arch type isn’t the whole story. You still need to pinpoint shoes that match your own arch’s contour. You can’t get a good feel by just standing, says James. So take your shoes for a quick jog, either on a store’s treadmill, on the sidewalk, or down a hallway. A natural-feeling support under the arch works for most people, adds James. “Back off the amount of support if you feel your arch cramping.”