Past history, averaged 55 mpw for the past year, before that, not much formal training. My coach trains me extremely lightly during the xc season, and I don’t have a ton of races either. Workouts are just not many repeats of like 800s at interval pace so not much. I have definitely gotten my solid aerobic base, and have proven that I am not very injury prone. Next xc season in the summer I was planning on doing 65 mpw with 3 workouts a week including long run. Workouts including hills, intervals at 5k some at mile pace, and some tempos. Just some standard stuff, my real question though was if I do this much intensity in the summer, then during the season do less besides the fact that I am racing, is this a recipe for peaking too early in the season? I want a mid to late November race to be my true peak so is this high intensity idea during the summer too much. And have already done 2500+ miles easy, so that is definitely not my weak point.
If by peaking you mean “lose fitness due to undertraining” then yes you will peak early in the season. My recommendation is to learn how to quantify your weekly training intensity and then do extra easy mileage and workouts outside of your school coach’s practices to maintain your preferred level of training intensity.