Thanks for the info Grog! I think I may try it out for myself sometime and see if a run/walk combo will result in a faster 5K time. I could see how it would be really motivating too. Something like - "Ok, if I can run/walk the 5K in X time, then I can definitely work to get a pace that fast."

Do you have a certain strategy when doing it? Like 8 minutes jog/2 minutes walk? Something less/more?