These Damn Vibrams!
Yes, sensational title, I know.
I overall love my Vibrams. I have the KSO's. They fit great, they feel great, they're awesome for walking, trail running...I love 'em. Except they fail in one big area.
When I do low intensity steady state cardio on a treadmill. We're talking in the 5.5-6.5 mph range.
Like clockwork at the 20 minute mark, my left arch starts to kill me. It's always the left arch, and it HURTS. I have to completely stop, stretch for 2 minutes, then after 5 minutes, it comes back again. This makes it very annoying to run at the gym with them. They, plain and simple, suck on hard surfaces. I don't have these issues with normal New Balance sneakers. Does anyone else experience foot pain running on firm, level, even surfaces with Vibrams? I really want to run using them on a treadmill, but it hurts my foot and compromises the integrity of my workout. I won a 5K in them with no foot pain at all over trails, so it seems to be an issue with the constant, level, firm surface a treadmill or sidewalk would give you.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.