started running with a friend 2 months ago for race for life. have never been good at running (smoked behind the bushes on cross country at school) and so started by running and walking 0.5 miles, now can run 3.7 without stopping which takes about 35-40 mins but this seems to have plateaued. want to be able to run 6 miles (10 k) comfortably. we consistently run twice a week and i try to do an additional day either on the road or in the gym with some leg weights. i work and have 3 kids so finding more time than this isn't really possible. my friend's slightly better than me so this is an extra push. our terrain is hilly lanes which we vary. should we run and walk a longer distance or try to do our current distance quicker? i personally find it incredibly difficult to get going once i've stopped. we have a goal to do a 10 k next summer and a half marathon maybe the following year. there is a 10 k in september this year but this may be too soon. all suggestions greatfully received.