http://www.asiorders.com/view_user_event.asp?EVENTID=35311&BIB=490&S=230&PWD=
If you've ever noticed the grimmace (pain?) on my face sometimes when running long distances, it's because sometimes there is slight discomfort in running for 4 hours! But, to be clear, it is not excruciating nor is it deabilitating. It is simply just fun!
