Casual use of Running shoes?

Question

Im thinking about doing a 5k charity run.

bit of training for it, and casual use thereafter three times a week, may not run at all in winter or cold weather.

have a pair of nike trainers

http://www.nike.com/index.jhtml?l=nikestore,pdp,_pdp,gid-118034/pid-118033#l=nikestore,grid,_pdp,cid-1/gid-161253/pid-161253,_grid,f-10001+12001/pn-2&re=US&co=US&la=EN

will they be ok ? or will i have to buy running shoes ? will it cause long term damage to my feet or back ?

Answer 1

buy real running shoes, those things are crappy gimmick

Answer 2

A 5 K is only 3 miles so you shouldn't have any problems with you feet and back.  However, if you start feeling pain--not just post-run soreness, the first thing to blame are the shoes.

Plus, you will most likely become addicted to the training/racing game, and then you definitely need to get yourself a pair of good quality running shoes.  Have fun...