i am a sophmore in high school, and i am trying to improve my 5k time. at the end of the season, it was about 19:25, but i think i can be much faster than that by my next xc season, since i didn't train for a year, due to problems with my legs. i entered the season with no prior training and improved a minute twenty from my freshman pr. I am hoping to be down in the 18:20's or below for the 5k next year. could someone tell me how much they improved from year to year for a 5k in high school, so i could get a rough est. of how much i could improve with a year's training? thanks.