I want to register my daughter and myself got the 5k run and possibly the half marathon. I noticed that under questions that usually they only allow one transaction..Do I have to book both now or can I do the 5k now and maybe in a month the half marathon. I do alot gym and the 5k will be no problem what so ever but I do alot weights and don't know how comfortable I'll be with the 13 mile run. I would like to see how if I start a training program for a month and see where I'm at.